Title: £1,276 Cheap United flights from London to Washington (LHR→IAD) - Expedia.co.uk ![Chantilly, France - December 2013: The chateau at Chantilly](https://images.trvl-media.com/place/8638/8a4635fc-37fb-4de8-b687-777b12acac2c.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/8638/8a4635fc-37fb-4de8-b687-777b12acac2c.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £1,276 Cheap United flights from London to Washington (LHR→IAD) [View £1,276 flight on Sun, 19 Oct 2025](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:LHR,to:IAD,departure:19/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1275.82&airProductToken=AQo2CjQI1YIBEgM5MTkY64kBIIgYKMPh-gIwsuX6AjhNQABYAWoIRUNPQkFTSUNyCE1LV01VT0JREgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) - [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 - ## Plan, book, fly with confidence - ### Be in the know Get alerts if flight prices drop or rise\* - ### Book smarter Save up to 25% on select hotels after you book a flight\* - ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) ## United flights from London to Washington (LHR→IAD) Prices were available within the past 7 days and start at £1,276 for one-way flights and £414 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) Fri, 14 Nov - Sun, 30 Nov LHR London IAD Washington £414 Return found 4 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:IAD,departure:14/11/2025TANYT&leg2=from:IAD,to:LHR,departure:30/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:413.92&airProductToken=AQpsCjUI1YIBEgQ4ODEyGOuJASClBCiihP0CMIGF_QI4S0AAWAFqCEVDT0JBU0lDcghLTFBPNUZCUQozCNWCARIDOTg4GKUEIIgYKNaF_QIw94n9AjhLQAFYAWoIRUNPQkFTSUNyCEtMUE81RkJRCjYKNAjVggESAzkyNBiIGCDriQEow8H-AjCKxf4COEtAAFgBaghFQ09CQVNJQ3IIS0xQTzVGQlESCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) 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 £414 from LHR to IAD. Affordable one-way options from £1,276 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." - Trending United Flights - Trending Routes - Related Airlines - Nearby Airports - Flights from Other Cities - Expedia's Latest Trends ### Most Popular United Routes from London - [United LHR to LAX](https://expedia.co.uk/lp/flight-routes/united-from-heathrow-to-los-angeles-intl/ua/lhr/lax) - [United LHR to EWR](https://expedia.co.uk/lp/flight-routes/united-from-heathrow-to-newark-liberty-intl-airport/ua/lhr/ewr) - [United LHR to BNA](https://expedia.co.uk/lp/flight-routes/united-from-heathrow-to-nashville-intl/ua/lhr/bna) - [United LHR to ORD](https://expedia.co.uk/lp/flight-routes/united-from-heathrow-to-ohare-intl/ua/lhr/ord) ### Most Popular United Routes from Washington - [United IAD to LHR](https://expedia.co.uk/lp/flight-routes/united-from-washington-dulles-intl-to-heathrow/ua/iad/lhr) - [United IAD to DFW](https://expedia.co.uk/lp/flight-routes/united-from-washington-dulles-intl-to-dallas-fort-worth-intl/ua/iad/dfw) - [United IAD to BOS](https://expedia.co.uk/lp/flight-routes/united-from-washington-dulles-intl-to-logan-intl/ua/iad/bos) - [United IAD to ORD](https://expedia.co.uk/lp/flight-routes/united-from-washington-dulles-intl-to-ohare-intl/ua/iad/ord) - [London to Sydney (LHR - SYD)](https://expedia.co.uk/lp/flights/lhr/syd/london-to-sydney) - [London to Las Vegas (LHR - LAS)](https://expedia.co.uk/lp/flights/lhr/las/london-to-las-vegas) - [London to Tokyo (LHR - HND)](https://expedia.co.uk/lp/flights/lhr/hnd/london-to-tokyo) - [London to Vancouver (LHR - YVR)](https://expedia.co.uk/lp/flights/lhr/yvr/london-to-vancouver) - [London to Los Angeles (LHR - LAX)](https://expedia.co.uk/lp/flights/lhr/lax/london-to-los-angeles) - [London to Chicago (LHR - ORD)](https://expedia.co.uk/lp/flights/lhr/ord/london-to-chicago) - [London to Melbourne (LHR - MEL)](https://expedia.co.uk/lp/flights/lhr/mel/london-to-melbourne) - [New York to London (JFK - LHR)](https://expedia.co.uk/lp/flights/jfk/lhr/new-york-to-london) - [London to San Francisco (LHR - SFO)](https://expedia.co.uk/lp/flights/lhr/sfo/london-to-san-francisco) - [London to Montego Bay (LHR - MBJ)](https://expedia.co.uk/lp/flights/lhr/mbj/london-to-montego-bay) ### Popular Domestic Routes in Washington Dulles Intl. - [New York to London (JFK - LHR)](https://expedia.co.uk/lp/flights/jfk/lhr/new-york-to-london) - [London to Newark Liberty Intl. Airport (LHR - EWR)](https://expedia.co.uk/lp/flights/lhr/ewr/london-to-newark-liberty-intl-airport) - [London to Vancouver (LHR - YVR)](https://expedia.co.uk/lp/flights/lhr/yvr/london-to-vancouver) - [Manchester to Las Vegas (MAN - LAS)](https://expedia.co.uk/lp/flights/man/las/manchester-to-las-vegas) - [London to Toronto (LHR - YYZ)](https://expedia.co.uk/lp/flights/lhr/yyz/london-to-toronto) - [London to Seoul (LHR - ICN)](https://expedia.co.uk/lp/flights/lhr/icn/london-to-seoul) - [London to Miami (LHR - MIA)](https://expedia.co.uk/lp/flights/lhr/mia/london-to-miami) - [London to Chicago (LHR - ORD)](https://expedia.co.uk/lp/flights/lhr/ord/london-to-chicago) - [London to Orlando (LHR - MCO)](https://expedia.co.uk/lp/flights/lhr/mco/london-to-orlando) - [London to Los Angeles (LHR - LAX)](https://expedia.co.uk/lp/flights/lhr/lax/london-to-los-angeles) ### Related Airlines - [British Airways](https://expedia.co.uk/British-Airways-Flights.cBA.Travel-Guide-Airlines) - [Air France](https://expedia.co.uk/Air-France-Flights.cAF.Travel-Guide-Airlines) - [KLM](https://expedia.co.uk/KLM-Flights.cKL.Travel-Guide-Airlines) - [Lufthansa](https://expedia.co.uk/Lufthansa-Flights.cLH.Travel-Guide-Airlines) - [Turkish Airlines](https://expedia.co.uk/Turkish-Airlines-Flights.cTK.Travel-Guide-Airlines) - [Swiss International Air Lines](https://expedia.co.uk/Swiss-International-Air-Lines-Flights.cLX.Travel-Guide-Airlines) - [Qatar Airways](https://expedia.co.uk/Qatar-Airways-Flights.cQR.Travel-Guide-Airlines) - [Iberia](https://expedia.co.uk/Iberia-Flights.cIB.Travel-Guide-Airlines) - [Virgin Atlantic](https://expedia.co.uk/Virgin-Atlantic-Flights.cVS.Travel-Guide-Airlines) - [SAS](https://expedia.co.uk/Scandinavian-Airlines-Flights.cSK.Travel-Guide-Airlines) - [Etihad Airways](https://expedia.co.uk/Etihad-Airways-Flights.cEY.Travel-Guide-Airlines) - [Austrian Airlines](https://expedia.co.uk/Austrian-Airlines-Flights.cOS.Travel-Guide-Airlines) - [LOT-Polish Airlines](https://expedia.co.uk/LOT-Polish-Airlines-Flights.cLO.Travel-Guide-Airlines) - [Finnair](https://expedia.co.uk/Finnair-Flights.cAY.Travel-Guide-Airlines) - [Aer Lingus](https://expedia.co.uk/Aer-Lingus-Flights.cEI.Travel-Guide-Airlines) - [Emirates](https://expedia.co.uk/Emirates-Flights.cEK.Travel-Guide-Airlines) ### Nearby Airports - [Farnborough Airport (FAB)](https://expedia.co.uk/lp/airports/fab/flights-from-farnborough-airport) - [London City Airport (LCY)](https://expedia.co.uk/lp/airports/lcy/flights-from-london-city-airport) - [Gatwick Airport (LGW)](https://expedia.co.uk/lp/airports/lgw/flights-from-gatwick-airport) - [Luton Airport (LTN)](https://expedia.co.uk/lp/airports/ltn/flights-from-luton-airport) - [Stansted Airport (STN)](https://expedia.co.uk/lp/airports/stn/flights-from-stansted-airport) - [Oxford Airport (OXF)](https://expedia.co.uk/lp/airports/oxf/flights-from-oxford-airport) - [Southend Airport (SEN)](https://expedia.co.uk/lp/airports/sen/flights-from-southend-airport) - [Southampton Airport (SOU)](https://expedia.co.uk/lp/airports/sou/flights-from-southampton-airport) - [Cambridge Airport (CBG)](https://expedia.co.uk/lp/airports/cbg/flights-from-cambridge-airport) - [Coventry Airport (CVT)](https://expedia.co.uk/lp/airports/cvt/flights-from-coventry-airport) - [Flights from London](https://expedia.co.uk/lp/flights/178279/flights-from-london) - [Flights from Oxford](https://expedia.co.uk/lp/flights/9272/flights-from-oxford) - [Flights from Hounslow](https://expedia.co.uk/lp/flights/4251/flights-from-hounslow) - [Flights from Gatwick](https://expedia.co.uk/lp/flights/182523/flights-from-gatwick) - [Flights from Wembley](https://expedia.co.uk/lp/flights/4253/flights-from-wembley) - [Flights from West Drayton](https://expedia.co.uk/lp/flights/10519/flights-from-west-drayton) - [Flights from Windsor](https://expedia.co.uk/lp/flights/5479/flights-from-windsor) - [Flights from Reading](https://expedia.co.uk/lp/flights/5664/flights-from-reading) - [Flights from Slough](https://expedia.co.uk/lp/flights/5688/flights-from-slough) - [Flights from Ilford](https://expedia.co.uk/lp/flights/6144799/flights-from-ilford) - [Flights from Croydon](https://expedia.co.uk/lp/flights/4247/flights-from-croydon) - [Flights from Watford](https://expedia.co.uk/lp/flights/5464/flights-from-watford) ### Expedia's Latest Trends Flights - [Flights from London to Melbourne](https://expedia.co.uk/lp/flights/lhr/mel/london-to-melbourne) - [Flights from London to Nairobi](https://expedia.co.uk/lp/flights/lhr/nbo/london-to-nairobi) - [Flights from London to Los Angeles](https://expedia.co.uk/lp/flights/lhr/lax/london-to-los-angeles) - [Flights from Edinburgh to London](https://expedia.co.uk/lp/flights/edi/lhr/edinburgh-to-london) - [Flights from London to Hong Kong](https://expedia.co.uk/lp/flights/lhr/hkg/london-to-hong-kong) - [Flights from London to Tokyo](https://expedia.co.uk/lp/flights/lhr/nrt/london-to-tokyo) - [Flights from London to Sri Guru Ram Das Ji Intl. Airport](https://expedia.co.uk/lp/flights/lhr/atq/london-to-sri-guru-ram-das-ji-intl-airport) - [Flights from London to Bangkok](https://expedia.co.uk/lp/flights/lhr/bkk/london-to-bangkok) - [Flights from London to Manila](https://expedia.co.uk/lp/flights/lhr/mnl/london-to-manila) - [Flights from London to Johannesburg](https://expedia.co.uk/lp/flights/lhr/jnb/london-to-johannesburg) - [Flights from London to Toronto](https://expedia.co.uk/lp/flights/lhr/yyz/london-to-toronto) - [Flights from Newcastle to London](https://expedia.co.uk/lp/flights/ncl/lhr/newcastle-to-london) - [Flights from London to Sydney](https://expedia.co.uk/lp/flights/lhr/syd/london-to-sydney) - [Flights from Lagos to London](https://expedia.co.uk/lp/flights/los/lhr/lagos-to-london) - [Flights from London to New York](https://expedia.co.uk/lp/flights/lhr/jfk/london-to-new-york) - [Flights from London to Auckland](https://expedia.co.uk/lp/flights/lhr/akl/london-to-auckland) - [Flights from London to Miami](https://expedia.co.uk/lp/flights/lhr/mia/london-to-miami) - [Flights from London to San Francisco](https://expedia.co.uk/lp/flights/lhr/sfo/london-to-san-francisco) - [Flights from London to Perth](https://expedia.co.uk/lp/flights/lhr/per/london-to-perth) - [Flights from London to Delhi](https://expedia.co.uk/lp/flights/lhr/del/london-to-delhi) - [Flights from London to Colombo](https://expedia.co.uk/lp/flights/lhr/cmb/london-to-colombo) - [Flights from London to Istanbul](https://expedia.co.uk/lp/flights/lhr/ist/london-to-istanbul) - [Flights from London to Barcelona](https://expedia.co.uk/lp/flights/lhr/bcn/london-to-barcelona) - [Flights from Manchester to New York](https://expedia.co.uk/lp/flights/man/jfk/manchester-to-new-york) - [Flights from London to Dubai](https://expedia.co.uk/lp/flights/lhr/dxb/london-to-dubai) - [Flights from London to Cape Town](https://expedia.co.uk/lp/flights/lhr/cpt/london-to-cape-town) - [Flights from London to Lisbon](https://expedia.co.uk/lp/flights/lhr/lis/london-to-lisbon) - [Flights from London to Vancouver](https://expedia.co.uk/lp/flights/lhr/yvr/london-to-vancouver) - [Flights from London to Mumbai](https://expedia.co.uk/lp/flights/lhr/bom/london-to-mumbai) - [Flights from London to Goa](https://expedia.co.uk/lp/flights/lhr/goi/london-to-goa) \*Available to Expedia members. ![](https://a.travel-assets.com/mad-service/footer/bnaBanners/BEX_Footer.jpg) ## Go further with the Expedia app Save on select hotels when you book in the app. Our app deals help you to save on trips so you can travel more and manage it all on the go. Scan the QR code with your device camera and download our app ![QR code to download the app](https://a.travel-assets.com/mad-service/qr-code/footer_qr/3_QR_FOOTER.png)