Title: £284 Cheap United flights from San Francisco to London (SFO→LHR) - Expedia.co.uk ![](https://images.trvl-media.com/place/178279/2a1d5619-553b-468a-a773-e81b88024741.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178279/2a1d5619-553b-468a-a773-e81b88024741.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £284 Cheap United flights from San Francisco to London (SFO→LHR) [View £284 flight on Wed, 8 Oct 2025](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:SFO,to:LHR,departure:08/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:283.10&airProductToken=AQprCjQI1YIBEgQxMzMzGLJxIINpKOvp-QIwi-v5AjhXQABYAWoIRUNPQkFTSUNyCFdMRTcwTEdUCjMI1YIBEgIyNxiDaSDriQEox-v5AjDo7_kCOFdAAVgBaghFQ09CQVNJQ3IIV0xFNzBMR1QSCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) - [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 ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 25% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) ## United flights from San Francisco to London (SFO→LHR) Prices were available within the past 7 days and start at £284 for one-way flights and £434 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) Tue, 6 Jan - Fri, 16 Jan SFO San Francisco LHR London £434 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SFO,to:LHR,departure:06/01/2026TANYT&leg2=from:LHR,to:SFO,departure:16/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:433.12&airProductToken=AQoiCiAI1YIBEgM5MDEYsnEg64kBKOLegQMw3eOBAzhLQABYAQoiCiAI1YIBEgM5MDAY64kBILJxKJ3KggMwwM-CAzhLQABYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) Flight from San Francisco to London route information | Origin airport | San Francisco Intl. | | --- | --- | | Destination airport | Heathrow | | Airlines serving | Aer Lingus, Air Canada, Air France, Alaska Airlines, Austrian Airlines, British Airways, Brussels Airlines, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic, WestJet | | Popular airline | Virgin Atlantic | | Distance | 8567 km | | Average flight time | 18 hours 20 mins | ## Frequently asked questions ### How much is a United Airlines flight from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR)? > You can discover budget-friendly return United Airlines flights from £434 from SFO to LHR by organising your results from "Price (lowest to highest)" on Expedia. Or look for deals from £284 for a one-way trip.\**\*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 SFO to LHR with United Airlines? > Browse for one-way or round-trip flights to London in January or February. You could find cheaper fares with United Airlines during these off-season months. ### Does United Airlines fly nonstop from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR)? > Yes, you can travel from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR) 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 land at LHR at a time that suits you. ### How long does it take to fly from SFO to LHR with United Airlines? > It takes around 10h 35m to travel nonstop from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR) with United Airlines. ### Which day of the week has the most United Airlines flights from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR)? > If flexibility is what you're after, Friday offers the most choice for United Airlines flights from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR). Take your pick of 2 different departures. ### What airports does United Airlines fly into in London? > Heathrow Airport (LHR) is the primary London gateway for United Airlines flights from San Francisco Intl. Airport (SFO). ### What type of plane does United Airlines fly from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR)? > Take a United Airlines flight from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR), and you'll probably board a Boeing 777. Keep in mind though, that the aircraft type can vary due to operational reasons. ### Can I change or cancel my United Airlines flight from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR)? > Changes are often free within 24 hours of making your booking, but your airline may charge a fee after that time. For more details about altering your reservation, head to your "[Trips](https://www.expedia.co.uk/trips)," select your flight and click on "Manage Booking." If you'd like the freedom to make changes without being charged, apply the "Changes included" or "No cancel fee" filter when planning your next escape. - Trending United Flights - Trending Routes - Related Airlines - Nearby Airports - Flights from Other Cities - Expedia's Latest Trends ### Most Popular United Routes from San Francisco - [United SFO to HNL](https://expedia.co.uk/lp/flight-routes/united-from-san-francisco-intl-to-daniel-k-inouye-intl/ua/sfo/hnl) ### 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 BNA](https://expedia.co.uk/lp/flight-routes/united-from-heathrow-to-nashville-intl/ua/lhr/bna) - [United LHR to MCO](https://expedia.co.uk/lp/flight-routes/united-from-heathrow-to-orlando-intl/ua/lhr/mco) - [United LHR to LAS](https://expedia.co.uk/lp/flight-routes/united-from-heathrow-to-harry-reid-intl/ua/lhr/las) - [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 New York (LHR - JFK)](https://expedia.co.uk/lp/flights/lhr/jfk/london-to-new-york) - [London to Auckland (LHR - AKL)](https://expedia.co.uk/lp/flights/lhr/akl/london-to-auckland) - [London to San Francisco (LHR - SFO)](https://expedia.co.uk/lp/flights/lhr/sfo/london-to-san-francisco) - [London to Las Vegas (LHR - LAS)](https://expedia.co.uk/lp/flights/lhr/las/london-to-las-vegas) - [Manchester to Orlando (MAN - MCO)](https://expedia.co.uk/lp/flights/man/mco/manchester-to-orlando) - [Manchester to Las Vegas (MAN - LAS)](https://expedia.co.uk/lp/flights/man/las/manchester-to-las-vegas) - [London to Tokyo (LHR - HND)](https://expedia.co.uk/lp/flights/lhr/hnd/london-to-tokyo) - [London to Montego Bay (LHR - MBJ)](https://expedia.co.uk/lp/flights/lhr/mbj/london-to-montego-bay) ### Popular Domestic Routes in Heathrow - [London to Las Vegas (LHR - LAS)](https://expedia.co.uk/lp/flights/lhr/las/london-to-las-vegas) - [London to Sydney (LHR - SYD)](https://expedia.co.uk/lp/flights/lhr/syd/london-to-sydney) - [London to San Francisco (LHR - SFO)](https://expedia.co.uk/lp/flights/lhr/sfo/london-to-san-francisco) - [London to Seoul (LHR - ICN)](https://expedia.co.uk/lp/flights/lhr/icn/london-to-seoul) - [London to Newark Liberty Intl. 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