Flying time from Seattle, WA to London, United Kingdom. The total flight duration from Seattle, WA to London, United Kingdom is 10 hours, 6 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds an extra 30 minutes for take-off and landing. The two airlines most popular with KAYAK users for flights from Washington, D.C. to London are Delta and Virgin Atlantic. With an average price for the route of $795 and an overall rating of 8.0, Delta is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of $792 and an overall rating of 7.7. Apr 1, 2024 · Prices for flights from Washington to London are refreshed on a daily basis. How many operators does momondo search for flights from Washington to London? There are 16 operators available for flights from Washington to London as of March 2024. The cheapest month for flights from Washington, D.C. Reagan-National Airport to London is February, where tickets cost $586 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $918 and $847 respectively. Need to get from Washington, D.C. to London? With fares from $536, we offer a great choice of food, drinks and onboard entertainment & WiFi. Our data shows that the cheapest route for a one-way flight from Washington, D.C. to London cost £287 and was between Washington, D.C. Dulles Intl Airport and London …Hail a London black cab or book a minicab for door-to-door convenience. BUSES AND COACHES Catch a bus or coach. Great value buses and coaches connect Heathrow directly to many UK destinations. London rail links Take the train. Frequent trains between Heathrow and central London, for connections to other UK train services.10:03PM EDT Washington Dulles Intl - IAD. 10:23AM BST (+1) London Heathrow - LHR. 767. 7h 20m. Join FlightAware View more flight history Purchase entire flight history for UAL924. Get Alerts.The cheapest return flight ticket from Baltimore to London Heathrow Airport found by KAYAK users in the last 72 hours was for $551 on Delta, followed by Icelandair ($555). One-way flight deals have also been found from as …Rome2Rio makes travelling from Washington, DC to London easy. Rome2Rio is a door-to-door travel information and booking engine, helping you get to and from any location in the world. Find all the transport options for your trip from Washington, DC to London right here. Rome2Rio displays up to date schedules, route maps, journey times and ...As you can share your location, it will let you know easily how far you are in a straight line from any point of interest. Here are the steps to use it: Enter the address or the city of the first location. Enter the address or the city of the second location. Click on the "Calculate the distance" button. How far is it?Cheap Flights from Baltimore to London (BWI-LHR) Prices were available within the past 7 days and start at $243 for one-way flights and $481 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Baltimore to London with no change fee on selected flights.Prices were available within the past 7 days and start at $424 for one-way flights and $475 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals. One way. Roundtrip. Wed, Dec 4 - …Find United Airlines cheap flights from Washington, D.C. to London. Enjoy a Washington, D.C. to London modern flight experience in premium cabins with Wi-Fi.Compare flight deals to London Gatwick from Washington D.C. from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flex your dates to find the best …IAD - LON. Find cheap flights from Washington Dulles Airport to London from $230. Round-trip. 1 adult. Economy. 0 bags. Add hotel. Tue 5/21. Tue 5/28. Search. Direct …5 great places to eat in London, from Sunday roast to afternoon tea. Review by Tom Sietsema. December 29, 2023 at 6:30 a.m. EST. Diner James Cooper assesses the pastries and scones during ...Cheap Flights from Washington to London (WAS-LHR) Prices were available within the past 7 days and start at $368 for one-way flights and $468 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals.Train to Philadelphia, fly to London Heathrow • 11h 47m. Take the train from Washington Union Station to 30th Street Station. Fly from Philadelphia (PHL) to London Heathrow (LHR) PHL - LHR. £322 - £1,269. Quickest way to …Royal National Hotel. 1.67 km from city centre, London. 4 /5 Very Good 888 Reviews. With a stay at Royal National Hotel, you'll be centrally located in London, within a 5-minute drive of The British Museum and Leicester Square. This hotel is 1.5 mi (2.4 km) from Trafalgar Square and 1.6 mi (2.5 km) from Oxford Street.The total flight duration from Washington, DC to London, United Kingdom is 7 hours, 51 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds … Roundtrip. just found. Tue, Oct 29 - Tue, Nov 5. IAD. Washington. Book one-way or return flights from Washington to London with no change fee on selected flights. Earn your airline miles on top of our rewards! Get great 2024 flight deals from Washington to London now! Book flights to Washington. One of the most visited cities in the USA, Washington is home to many of the country’s most iconic sights. Visit the stately White House and the towering Lincoln Memorial, then discover D.C’s countless museums and world-class art scene – it’s hard to fit it all in into just one trip.UA924 and Washington IAD to London LHR Flights. Flight UA924 is code-shared by 5 airlines using the flight numbers AC5350, CM2294, LH9267, LX3045, OS7808. Other flights departing from Washington IAD: UA932, UA942, UA861, TP234. Other flights arriving at London LHR: AA104, TP1354, LH2472, KL1031. All flights connecting … All flight schedules from Washington Dulles International , Virginia , USA to Heathrow, United Kingdom . This route is operated by 3 airline (s), and the flight time is 8 hours and 10 minutes. The distance is 3687 miles. USA. Need to get from Washington, D.C. to London? With fares from $536, we offer a great choice of food, drinks and onboard entertainment & WiFi. The cheapest month for flights from Washington, D.C. Reagan-National Airport to London is February, where tickets cost $586 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $918 and $847 respectively.On average, a flight to London Heathrow Airport costs $812. The cheapest price found on KAYAK in the last 2 weeks cost $338 and departed from Boston. The most popular routes on KAYAK are New York to London Heathrow Airport which costs $752 on average, and Los Angeles to London Heathrow Airport, which costs $928 on average. See prices from:Compare flight deals to London from Washington D.C. from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flex your dates to find the best Washington D.C.-London ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to …Cheap Flights from Washington to London (IAD-LON) Prices were available within the past 7 days and start at $212 for one-way flights and $378 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Washington to London with no change fee on selected ...Flying time from Vancouver, WA to London, United Kingdom. The total flight duration from Vancouver, WA to London, United Kingdom is 10 hours, 21 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is … Wed, Mar 12 LHR – IAD with Scandinavian Airlines. 1 stop. from $426. London.$489 per passenger.Departing Mon, Sep 9, returning Thu, Sep 12.Round-trip flight with Fly Play and British Airways.Outbound indirect flight with Fly Play, departing from Baltimore Washington International on Mon, Sep 9, arriving in London Heathrow.Inbound indirect ... What is the cheapest month to fly from Washington, D.C. to London Stansted Airport? The cheapest month for flights from Washington, D.C. to London Stansted Airport is January, where tickets cost $381 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $869 and $809 respectively. March 7, 1993 - My flight from Washington Dulles to London Heathrow aboard the British Airways Concorde. This was shot with Sony Hi8 camera on a SteadiCam. T...Cheap Flights from Baltimore to London (BWI-LHR) Prices were available within the past 7 days and start at $243 for one-way flights and $481 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Baltimore to London with no change fee on selected flights.Flight time from DCA to LHR. Flights from Washington to London Heathrow take from 7 hours and 57 minutes up to 11 hours and 24 minutes, depending on your stopover airport. Please note that these times refer to the actual flight times, excluding the stopover time in between connecting flights, as this depends on your stopover airport as well as ...All flight schedules from Washington Dulles International , Virginia , USA to Heathrow, United Kingdom . This route is operated by 3 airline (s), and the flight time is 8 hours and 10 minutes. The distance is 3687 miles. USA.Cheap Flights from Washington Dulles to London Heathrow from $230 | (IAD - LHR) - KAYAK. IAD - LHR. Find cheap flights from Washington Dulles Airport to London …As you can share your location, it will let you know easily how far you are in a straight line from any point of interest. Here are the steps to use it: Enter the address or the city of the first location. Enter the address or the city of the second location. Click on the "Calculate the distance" button. How far is it?Washington to London Flights Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Washington to London offer the perfect respite. Not only does exploring London provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap ...The cheapest month for flights from Washington, D.C. Reagan-National Airport to London is February, where tickets cost $586 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $918 and $847 respectively. Cheap Flights from Washington to London (DCA-LGW) Prices were available within the past 7 days and start at $369 for one-way flights and $494 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Washington to London with no change fee on selected ... Flight information: Washington-DC - London. Flights from Washington-DC (WAS) to London (LON), low-cost direct flights and cheap flight offers on the route Washington-DC (WAS) London (LON) from $434 (price correct on 01/21/24). Book cheap tickets for direct flights online.Cheap Flights from Washington (IAD) to London (LHR) Prices were available within the past 7 days and start at £195 for one-way flights and £365 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Reserve one-way or return flights from Washington to London with no change fee on ...Washington to London Flights Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Washington to London offer the perfect respite. Not only does exploring London provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap ...London to Washington has long been a high-traffic route for the transatlantic carriers, which explains why it was one of the first to get A380. Thanks to an overbooked cabin (and recently gaining BA Exec Club Silver status), I was lucky to get upgraded from World Traveler Plus (my booking class) to Club World. ...Washington, D.C. (IAD) to London (LHR) flight deals from. USD537* Show Price in Money. expand_more. Round trip. expand_more. 1 Passenger, Economy. expand_more. …Cheap Flights from Washington to London (DCA-LGW) Prices were available within the past 7 days and start at $369 for one-way flights and $494 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Washington to London with no change fee on selected ...1 stop. Sat, 7 Dec IAD - STN with Fly Play. 1 stop. from £276. Washington D.C.. £279 per passenger.Departing Thu, 5 Dec, returning Mon, 9 Dec.Return flight with Fly Play.Outbound indirect flight with Fly Play, departs from London Stansted on Thu, 5 Dec, arriving in Washington Dulles.Inbound indirect flight with Fly Play, departs from ... One of the most popular airlines traveling from Washington, D.C. to London is KLM. Flights from KLM traveling this route typically cost $687.98 RT. This price is typically 81% more expensive than other airlines that offer Washington, D.C. to London flights. When booking this route, the cheapest RT price found was $576. On average, a flight to London Heathrow Airport costs $812. The cheapest price found on KAYAK in the last 2 weeks cost $338 and departed from Boston. The most popular routes on KAYAK are New York to London Heathrow Airport which costs $752 on average, and Los Angeles to London Heathrow Airport, which costs $928 on average. See prices from:Royal National Hotel. 1.67 km from city centre, London. 4 /5 Very Good 888 Reviews. With a stay at Royal National Hotel, you'll be centrally located in London, within a 5-minute drive of The British Museum and Leicester Square. This hotel is 1.5 mi (2.4 km) from Trafalgar Square and 1.6 mi (2.5 km) from Oxford Street.4 days ago · The best time to call from Washington to London. When planning a call between Washington and London, you need to consider that the cities are in different time zones. Washington is 5 hours behind of London. If you are in Washington, the most convenient time to accommodate all parties is between 9:00 am and 1:00 pm for a conference call or meeting. Rome2Rio makes travelling from Seattle, WA to London easy. Rome2Rio is a door-to-door travel information and booking engine, helping you get to and from any location in the world. Find all the transport options for your trip from Seattle, WA to London right here. Rome2Rio displays up to date schedules, route maps, journey times and estimated ...Travelmath provides an online flight time calculator for all types of travel routes. You can enter airports, cities, states, countries, or zip codes to find the flying time between any two points. The database uses the great circle distance and the average airspeed of a commercial airliner to figure out how long a typical flight would take.Flight UA924 from Washington to London is operated by United Airlines. Scheduled time of departure from Washington Dulles Intl is 22:05 EDT and scheduled time of arrival in Heathrow is 10:40 BST. The duration of the flight United Airlines UA 924 is 7 hours 35 minutes.The total straight line flight distance from Spokane, WA to London, United Kingdom is 4,662 miles. This is equivalent to 7 504 kilometers or 4,052 nautical miles. Your trip begins in Spokane, Washington. It ends in London, United Kingdom. Your flight direction from Spokane, WA to London, United Kingdom is Northeast (37 degrees from North).Disclaimer for Flight Radar Data. Flight UA918 from Washington to London is operated by United Airlines. Scheduled time of departure from Washington Dulles Intl is 18:30 EDT and scheduled time of arrival in Heathrow is 06:45 BST. The duration of the flight United Airlines UA 918 is 7 hours 15 minutes.There are at least 19 airlines that fly from London to Washington, the cheapest are British Airways (£221.84), United Airlines (£323.77) and Virgin Atlantic Airways (£348.11). When is the earliest flight from London to … 1 stop. Thu, Nov 28 LHR – IAD with Scandinavian Airlines. 1 stop. from $426. London.$427 per passenger.Departing Mon, Dec 2, returning Wed, Dec 11.Round-trip flight with Scandinavian Airlines.Outbound indirect flight with Scandinavian Airlines, departing from Washington Dulles on Mon, Dec 2, arriving in London Heathrow.Inbound indirect flight ... Washington to London Flights Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Washington to London offer the perfect respite. Not only does exploring London provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap ... Flying time from Vancouver, WA to London, United Kingdom. The total flight duration from Vancouver, WA to London, United Kingdom is 10 hours, 21 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is …Time Zone Converter – Time Difference Calculator. Provides time zone conversions taking into account Daylight Saving Time (DST), local time zone and accepts present, past, or future dates. Time Zone Converter Meeting Planner. Settings.Our data shows that the cheapest route for a one-way flight from Washington, D.C. to London cost $432 and was between Washington, D.C. Dulles Intl Airport and London … Cheap Flights from Washington to London (WAS-LHR) Prices were available within the past 7 days and start at $368 for one-way flights and $468 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals. Flights from Washington, D.C. to London. Use Google Flights to plan your next trip and find cheap one way or round trip flights from Washington, D.C. to London.Flight information: Washington-DC - London. Flights from Washington-DC (WAS) to London (LON), low-cost direct flights and cheap flight offers on the route Washington-DC (WAS) London (LON) from $434 (price correct on 01/21/24). Book cheap tickets for direct flights online.Compare Washington Dulles to London Heathrow flight deals. Find the cheapest month or even day of the year to fly to London Heathrow. Book the best London Heathrow fare …The cheapest return flight ticket from Baltimore to London Heathrow Airport found by KAYAK users in the last 72 hours was for $551 on Delta, followed by Icelandair ($555). One-way flight deals have also been found from as …As you can share your location, it will let you know easily how far you are in a straight line from any point of interest. Here are the steps to use it: Enter the address or the city of the first location. Enter the address or the city of the second location. Click on the "Calculate the distance" button. How far is it?On average, a flight to London Heathrow Airport costs $812. The cheapest price found on KAYAK in the last 2 weeks cost $338 and departed from Boston. The most popular routes on KAYAK are New York to London Heathrow Airport which costs $752 on average, and Los Angeles to London Heathrow Airport, which costs $928 on average. See prices from:Washington to London call time Best time for a conference call or a meeting is between 8am-1pm in Washington which corresponds to 1pm-6pm in London. 5:30 am 05:30 EDT (Eastern Daylight Time) (Washington, DC, USA). Offset UTC -4:00 hours 10:30 am 10:30 BST (British Summer Time) (London, United Kingdom). Offset UTC +1:00 hourUA924 and Washington IAD to London LHR Flights. Flight UA924 is code-shared by 5 airlines using the flight numbers AC5350, CM2294, LH9267, LX3045, OS7808. Other flights departing from Washington IAD: UA932, UA942, UA861, TP234. Other flights arriving at London LHR: AA104, TP1354, LH2472, KL1031. All flights connecting …Our data shows that the cheapest route for a one-way flight from Washington, D.C. to London cost $432 and was between Washington, D.C. Dulles Intl Airport and London …This air travel distance is equal to 3,674 miles. The air travel (bird fly) shortest distance between Washington, D.C. and London is 5,913 km= 3,674 miles. If you travel with an airplane (which has average speed of 560 miles) from Washington, D.C. to London, It takes 6.56 hours to arrive. The total flight duration from Vancouver, WA to London, United Kingdom is 10 hours, 21 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds an extra 30 minutes for take-off and landing. Your exact time may vary depending on wind speeds. Cheap Flights from Washington to London (IAD-LON) Prices were available within the past 7 days and start at $212 for one-way flights and $378 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Book one-way or return flights from Washington to London with no change fee on selected ...March 7, 1993 - My flight from Washington Dulles to London Heathrow aboard the British Airways Concorde. This was shot with Sony Hi8 camera on a SteadiCam. T...Amazing Virgin Atlantic IAD to LHR Flight Deals. The cheapest flights to Heathrow found within the past 7 days were $592 round trip and $459 one way. Prices and availability subject to change. Additional terms may apply. Wed, Aug 21 - Fri, Aug 23. IAD. Cheap Flights from Washington, D.C. (WAS) to London (LON) Compare Washington, D.C. to London flight deals. Find the cheapest month or even day of the year to fly to London. Book the best London fare with no extra fees. Our data shows that the cheapest route for a one-way flight from Washington, D.C. to London cost £287 and was between Washington, D.C. Dulles Intl Airport and London …Finnair. You can fly to London with Finnair from Los Angeles, Chicago, Boston, New York, and Washington DC. This domestic and international airline has its HQ in Helsinki, Finland. Founded in 1923, it’s one of the oldest airlines in the world—fun fact: back then, it was then known as Aero.Wed, Mar 12 LHR – IAD with Scandinavian Airlines. 1 stop. from $426. London.$489 per passenger.Departing Mon, Sep 9, returning Thu, Sep 12.Round-trip flight with Fly Play and British Airways.Outbound indirect flight with Fly Play, departing from Baltimore Washington International on Mon, Sep 9, arriving in London Heathrow.Inbound indirect ...1 stop. Sat, Jan 11 STN – BWI with Fly Play. 1 stop. from $396. London.$397 per passenger.Departing Wed, Mar 12, returning Wed, Mar 19.Round-trip flight with Fly Play.Outbound indirect flight with Fly Play, departing from Baltimore Washington International on Wed, Mar 12, arriving in London Stansted.Inbound indirect flight with …Book flights to Washington. One of the most visited cities in the USA, Washington is home to many of the country’s most iconic sights. Visit the stately White House and the towering Lincoln Memorial, then discover D.C’s countless museums and world-class art scene – it’s hard to fit it all in into just one trip. Need to get from Washington, D.C. to London? With fares from $536, we offer a great choice of food, drinks and onboard entertainment & WiFi. 6 days ago · Cheap Icelandair flights from Spokane to London. Some of the best deals we've found on Icelandair flights traveling from Spokane to London. Ensure the flight price, dates, time, and airline match your criteria before you book. Sun 9/1 1:30 pm GEG - LHR. 2 stops 22h 50m Icelandair. Thu 9/5 9:25 pm LHR - GEG.
London Heathrow to Washington Flights. Flights from LHR to IAD are operated 28 times a week, with an average of 4 flights per day. Departure times vary between 07:10 - 17:35. The earliest flight departs at 07:10, the last flight departs at 17:35. However, this depends on the date you are flying so please check with the full flight schedule .... Expressinsuranceinfo
Compare flight deals to London Gatwick from Washington D.C. from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flex your dates to find the best …Compare flight deals to London Heathrow from Washington D.C. from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flex your dates to find the …Cheap Flights from Washington Dulles to London Heathrow from $230 | (IAD - LHR) - KAYAK. IAD - LHR. Find cheap flights from Washington Dulles Airport to London …Flying time from Seattle, WA to London, United Kingdom. The total flight duration from Seattle, WA to London, United Kingdom is 10 hours, 6 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds an extra 30 minutes for take-off and landing.Cheap Flights from London (LHR) to Washington (IAD) Prices were available within the past 7 days and start at £495 for one-way flights and £502 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. Reserve one-way or return flights from London to Washington with no change fee on ...4 airports. The best one-way flight to London from Washington, D.C. in the past 72 hours is $194. The best round-trip flight deal from Washington, D.C. to London found on momondo in the last 72 hours is $374. The fastest flight from Washington, D.C. to London takes 7h 05m. Direct flights go from Washington, D.C. to London every day.Wed, 15 May DCA - LGW with jetBlue. 1 stop. from £403. Washington D.C.. £419 per passenger.Departing Wed, 13 Nov, returning Mon, 18 Nov.Return flight with jetBlue.Outbound indirect flight with jetBlue, departs from London Gatwick on Wed, 13 Nov, arriving in Washington Ronald Reagan.Inbound indirect flight with jetBlue, departs from …Washington D.C.. £276 per passenger. Departing Tue, 19 Nov, returning Sat, 7 Dec. Return flight with Fly Play. Outbound indirect flight with Fly Play, departs from London Stansted on Tue, 19 Nov, arriving in Washington Dulles. Find cheap tickets to London from anywhere in Washington. KAYAK searches hundreds of travel sites to help you find cheap airfare and book the flight that suits you best. With KAYAK you can also compare prices of plane tickets for last minute flights to London from anywhere in Washington. Disclaimer for UA919 Flight Radar Data. Flight UA919 from London to Washington is operated by United Airlines. Scheduled time of departure from Heathrow is 12:15 BST and scheduled time of arrival in Washington Dulles Intl is 15:20 EDT. The duration of the flight United Airlines UA 919 is 8 hours 5 minutes.There are 4 ways to get from Washington to London by bus, train, or car. Select an option below to see step-by-step directions and to compare ticket prices and travel times in … One of the most popular airlines traveling from Washington, D.C. to London is KLM. Flights from KLM traveling this route typically cost $687.98 RT. This price is typically 81% more expensive than other airlines that offer Washington, D.C. to London flights. When booking this route, the cheapest RT price found was $576. Cheap Flights from Washington (WAS) to London (LON) Prices were available within the past 7 days and start at £172 for one-way flights and £305 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals. All flight schedules from Washington Dulles International , Virginia , USA to Heathrow, United Kingdom . This route is operated by 3 airline (s), and the flight time is 8 hours and 10 minutes. The distance is 3687 miles. USA. One of the most popular airlines traveling from Washington, D.C. to London is KLM. Flights from KLM traveling this route typically cost $687.98 RT. This price is typically 81% more expensive than other airlines that offer Washington, D.C. to London flights. When booking this route, the cheapest RT price found was $576.Find flights to Washington from $275. Fly from London on Icelandair, United Airlines, Virgin Atlantic and more. Search for Washington flights on KAYAK now to find the best deal.1 stop. Mon, Nov 11 STN – IAD with Fly Play. 1 stop. from $360. London.$387 per passenger.Departing Sun, Dec 1, returning Tue, Dec 10.Round-trip flight with Fly Play.Outbound indirect flight with Fly Play, departing from Washington Dulles on Sun, Dec 1, arriving in London Stansted.Inbound indirect flight with Fly Play, departing from …The cheapest month for flights from London to Washington, D.C. is September, where tickets cost $572 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is $762 and $742 respectively..