Title: £741 Cheap United flights from London to Washington (LHR→IAD) - Expedia.co.uk ![Washington DC in Spring](https://images.trvl-media.com/place/3763/58eb1a51-e7f1-4f17-88af-21174d495e42.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/3763/58eb1a51-e7f1-4f17-88af-21174d495e42.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £741 Cheap United flights from London to Washington (LHR→IAD) [View £741 flight on Tue, 9 Dec 2025](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:LHR,to:IAD,departure:09/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:740.72&airProductToken=AQo2CjQI1YIBEgM5MjUY64kBIIgYKNSh_wIw66X_AjhVQABYAWoIRUNPQkFTSUNyCFVMWE1WT0JREgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) - [Return](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## United flights from London to Washington (LHR→IAD) Prices were available within the past 7 days and start at £741 for one-way flights and £594 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sun, 11 Jan - Thu, 22 Jan LHR London IAD Washington £594 Return found 6 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:IAD,departure:11/01/2026TANYT&leg2=from:IAD,to:LHR,departure:22/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:593.12&airProductToken=AQprCjUI1YIBEgQ5NzU5GOuJASC5PCjZk4IDMNGUggM4S0AAWAFqCEVDT0JBU0lDcghLTFhNVTVCUQoyCNWCARICNTMYuTwgiBgoxZ2CAzCOooIDOEtAAVgBaghFQ09CQVNJQ3IIS0xYTVU1QlEKNgo0CNWCARIDOTI0GIgYIOuJASjjlYMDMKqZgwM4S0AAWAFqCEVDT0JBU0lDcghLTFhNVTVCURIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) Flight from London to Washington route information | Origin airport | Heathrow | | --- | --- | | Destination airport | Washington Dulles Intl. | | Airlines serving | Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic | | Popular airline | British Airways | | Distance | 5866 km | | Average flight time | 3 hours 14 mins | ## Frequently asked questions ### How much is a United Airlines flight from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)? > Apply the "Price (lowest to highest)" filter on Expedia to search for cheap United Airlines round-trip flights from £594 from LHR to IAD. Affordable one-way options from £741 are available as well.\**\*These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.* ### What is the cheapest month to fly from LHR to IAD with United Airlines? > Browse for return or one-way flights to Washington in January or February. You could find a cheap fare with United Airlines during these quieter months. ### Does United Airlines fly nonstop from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)? > Yes, you can travel from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD) on any of United Airlines's 14 weekly direct flights. Use Expedia's "Nonstop" and "Airline" filters to find the United Airlines flight that'll arrive at IAD at your preferred time. ### How long does it take to fly from LHR to IAD with United Airlines? > Depart Heathrow Airport (LHR) for Washington Dulles Intl. Airport (IAD) on a direct United Airlines flight, and you'll be in the air for about 8h 45m. ### Which day of the week has the most United Airlines flights from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)? > Wednesday has the most United Airlines flights from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD). With 2 daily departures, this is the best day to find something that will suit your plans. ### What airports does United Airlines fly into in Washington? > United Airlines flights from Heathrow Airport (LHR) to Washington arrive at Washington Dulles Intl. Airport (IAD) and Baltimore Washington Intl. Thurgood Marshall Airport (BWI). The primary Washington gateway serviced by this carrier is IAD. It's always worth comparing flights landing at nearby airports on Expedia as they may offer cheaper tickets. ### What type of plane does United Airlines fly from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)? > United Airlines typically flies Boeing 767-300 planes for flights from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD). This airline also operates the Boeing 777 on this route. Bear in mind that aircraft type can vary depending on operational reasons, so the plane you catch could be different on the day. ### Can I change or cancel my United Airlines flight from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)? > Depending on the type of ticket you purchased, a fee may apply if you change or cancel your flight more than 24 hours after it's been confirmed. To find plane tickets with more flexibility, select our "No cancel fee" or "Changes included" filter while looking for flights. For more information on cancelling or modifying your reservation, go to "[Trips](https://www.expedia.co.uk/trips)," select your flight and click on "Manage Booking." ## Explore a world of travel with Expedia - Accommodation - Flights - Packages - Cars - Holiday Homes - Other ### Accommodation - [4 Star Hotels in Sully](https://www.expedia.co.uk/4Star-Sully-Hotels.s40-0-d553248635976006627.Travel-Guide-Filter-Hotels) - [5 Star Hotels in Reston](https://www.expedia.co.uk/5Star-Reston-Hotels.s50-0-d10437.Travel-Guide-Filter-Hotels) - [5 Star Hotels in Sterling](https://www.expedia.co.uk/5Star-Sterling-Hotels.s50-0-d9843.Travel-Guide-Filter-Hotels) - [Ashburn Hotels](https://www.expedia.co.uk/Ashburn-Hotels.d6035055.Travel-Guide-Hotels) - [Brambleton Hotels](https://www.expedia.co.uk/Brambleton-Hotels.d553248635974902857.Travel-Guide-Hotels) - [Cottages in Chantilly](https://www.expedia.co.uk/Chantilly-Cottages.d8638-aaCottages.Travel-Guide-Accommodation) - [Hotels with Hot Tubs in Chantilly](https://www.expedia.co.uk/Chantilly-Hotels-Hotels-With-Hot-Tubs.0-0-d8638-tHotelsWithHotTubs.Travel-Guide-Filter-Hotels) - [Wedding Hotels in Chantilly](https://www.expedia.co.uk/Chantilly-Hotels-Wedding-Hotel.0-0-d8638-tWeddingHotel.Travel-Guide-Filter-Hotels) - [Chantilly Hotels](https://www.expedia.co.uk/Chantilly-Hotels.d8638.Travel-Guide-Hotels) - [Hotels near Cookology Recreational Culinary School](https://www.expedia.co.uk/Cookology-Recreational-Culinary-School-Hotels.0-l553248621532662019-0.Travel-Guide-Filter-Hotels) - [Gay-Friendly Hotels in Dulles](https://www.expedia.co.uk/Dulles-Hotels-Gay-Friendly-Hotel.0-0-d553248635975867357-tGayFriendlyHotel.Travel-Guide-Filter-Hotels) - [Dulles Hotels](https://www.expedia.co.uk/Dulles-Hotels.d553248635975867357.Travel-Guide-Hotels) - [Dulles Town Center Hotels](https://www.expedia.co.uk/Dulles-Town-Center-Hotels.d553248634999423703.Travel-Guide-Hotels) - [Best Western Hotels in Herndon](https://www.expedia.co.uk/Herndon-Hotels-Best-Western.0-0-d7596--bBestWestern.Travel-Guide-Filter-Hotels) - [Luxury Hotels in Herndon](https://www.expedia.co.uk/Herndon-Hotels-Luxury-Hotel.0-0-d7596-tLuxuryHotel.Travel-Guide-Filter-Hotels) - [Romantic Hotels in Herndon](https://www.expedia.co.uk/Herndon-Hotels-Romantic-Hotel.0-0-d7596-tRomanticHotel.Travel-Guide-Filter-Hotels) - [Herndon Hotels](https://www.expedia.co.uk/Herndon-Hotels.d7596.Travel-Guide-Hotels) - [Oak Hill Hotels](https://www.expedia.co.uk/Oak-Hill-Hotels.d553248635975849526.Travel-Guide-Hotels) - [Hotels near One Loudoun](https://www.expedia.co.uk/One-Loudoun-Hotels.0-l553248633992325122-0.Travel-Guide-Filter-Hotels) - [Potomac Falls Hotels](https://www.expedia.co.uk/Potomac-Falls-Hotels.d553248635975848832.Travel-Guide-Hotels) - [Hotels with Connecting Rooms in Reston](https://www.expedia.co.uk/Reston-Hotels-Hotel-With-Connecting-Rooms.0-0-d10437-thotelwithconnectingrooms.Travel-Guide-Filter-Hotels) - [Reston Hotels](https://www.expedia.co.uk/Reston-Hotels.d10437.Travel-Guide-Hotels) - [Hotels near Reston Town Center](https://www.expedia.co.uk/Reston-Town-Center-Hotels.0-l6127319-0.Travel-Guide-Filter-Hotels) - [South Riding Hotels](https://www.expedia.co.uk/South-Riding-Hotels.d553248635975851220.Travel-Guide-Hotels) - [Cheap Hotels in Sterling](https://www.expedia.co.uk/Sterling-Hotels-Budget-Hotels.0-0-d9843-tBudgetHotels.Travel-Guide-Filter-Hotels) - [Gay-Friendly Hotels in Sterling](https://www.expedia.co.uk/Sterling-Hotels-Gay-Friendly-Hotel.0-0-d9843-tGayFriendlyHotel.Travel-Guide-Filter-Hotels) - [Luxury Hotels in Sterling](https://www.expedia.co.uk/Sterling-Hotels-Luxury-Hotel.0-0-d9843-tLuxuryHotel.Travel-Guide-Filter-Hotels) - [Marriott Hotels & Resorts in Sterling](https://www.expedia.co.uk/Sterling-Hotels-Marriott-Hotels-Resorts.0-0-d9843--bMarriottHotelsResorts.Travel-Guide-Filter-Hotels) - [Sterling Hotels](https://www.expedia.co.uk/Sterling-Hotels.d9843.Travel-Guide-Hotels) - [Holiday Homes in Sterling](https://www.expedia.co.uk/Sterling-Private-Holiday-Homes.d9843-aaPrivateHolidayHomes.Travel-Guide-Accommodation) - [Hotels near Steven F. 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