--- title: "£441 Cheap Finnair flights from London to San Francisco (LHR→SFO) - Expedia.co.uk" description: "Book Finnair flights from London (LHR) to San Francisco (SFO) from £441 for one-way flights and £574 for round trip with Finnair & save!" canonical: "https://www.expedia.co.uk/lp/flight-routes/finnair-from-heathrow-to-san-francisco-intl/ay/lhr/sfo" language: en-GB market: GB currency: GBP prices_as_of: 2026-11-13T23:43:37Z --- # £441 Cheap Finnair flights from London to San Francisco (LHR→SFO) ![A spacious airport terminal with a high ceiling and natural light.](https://images.trvl-media.com/place/5195347/e96e1b03-2633-485f-bd9c-09a1ee5cb4e9.jpg?impolicy=fcrop&w=1200&h=500&q=medium) [View £441 flight on Mon, 11 Jan 2027](https://www.expedia.co.uk/Flights-Search?leg1=from:LHR,to:SFO,departure:11/01/2027TANYT&trip=oneway&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:440.21&airProductToken=AQqoAQozCMGyARIEMTMzOBjriQEgh1kogqCiAzCxoaIDOFFAAFgBagZFTElHSFRyCFFMWDVDNUI0CjAIwbIBEgExGIdZIIu4ASioqaIDMMGuogM4UUABWAFqBkVMSUdIVHIIUUxYNUM1QjQKPwjBsgESBDQxMjUYi7gBILJxKOuvogMwx7CiAzhRQAFYAWoGRUxJR0hUcghRTFg1QzVCNHoKCMGCARIENDEyNRIKCAEQARgBKgJBWRgBIgQIARABKAIoAygEMAE) Photo by Courtesy of San Francisco International Airport ### 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) ## £441 Cheap Finnair flights London (LHR) to San Francisco (SFO) Prices were available within the past 7 days and start at £441 for one-way flights and £574 for return, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return [Select Finnair flight, departing Sat, 6 Feb from London to San Francisco, returning Sat, 20 Feb, priced at £574 Just found](https://www.expedia.co.uk/Flights-Search?leg1=from:LHR,to:SFO,departure:06/02/2027TANYT&leg2=from:SFO,to:LHR,departure:20/02/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:573.28&airProductToken=AQpDCkEIwbIBEgQ1NTI1GOuJASCycSjBwaQDMN%5FGpAM4T0AAWAFqCEFFTENBTVAzcghPTFc4STFCNHoKCMKCARIENTUyNQqHAQpBCMGyARIENTcxMRiycSCjsQEovOGlAzCU46UDOE9AAFgBaghBRUxDQU1QM3IIT0xXOEkxQjR6CgjBggESBDU3MTEKQgjBsgESBDM3NTAYo7EBIOuJASjZ46UDMPrnpQM4T0ABWAFqCEFFTENBTVAzcghPTFc4STFCNHoKCMGCARIEMzc1MBIKCAEQARgBKgJBWRgBIgQIARABKAIoAygEMA8) Sat, 6 Feb - Sat, 20 Feb · LHR · SFO · From £574 · Return ## Alternative airports near San Francisco Prices were available within the past 7 days. Prices and availability are subject to change. [Select flight to Norman Y. Mineta San Jose Intl. SJC. Average driving time to city centre is 50 minutes. Flights from £632](https://www.expedia.co.uk/Flights-Search?leg1=from:LHR,to:SJC,departure:27/11/2026TANYT&leg2=from:SJC,to:LHR,departure:01/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) 50 min ## Find the cheapest month to fly from London (LHR) to San Francisco (SFO) ### October is typically the cheapest month to fly From £424 - £801 per traveller. View flights in October Insights are based on prices from searches for economy trips of 10 days or less on our sites in the last 12 months. Insights are informative only and current prices may differ. ## Travel information | Origin airport | Heathrow Airport | | ------------------- | ----------------------------------- | | Destination airport | San Francisco International Airport | | Distance | 5,354 miles away | | Airline name | Finnair | | Airline code | AY | | Return price | £574 | | Average flight time | 11 hours 12 mins | ## Explore a world of travel with Expedia - [Lodging](?equalTargetTab=tab-0) - [Flights](?equalTargetTab=tab-1) - [Packages](?equalTargetTab=tab-2) - [Cars](?equalTargetTab=tab-3) - [Things to Do](?equalTargetTab=tab-4) - [Fisherman's Wharf Hotels](https://www.expedia.co.uk/Fishermans-Wharf-San-Francisco-Hotels.0-n800128-0.Travel-Guide-Filter-Hotels) - [San Francisco Hotels](https://www.expedia.co.uk/San-Francisco-Hotels.d178305.Travel-Guide-Hotels) - [Hotels near San Francisco Intl.](https://www.expedia.co.uk/San-Francisco-Intl-Airport-Hotels.0-aSFO-0.Travel-Guide-Filter-Hotels) - [Flights to San Francisco Intl.](https://www.expedia.co.uk/Cheap-Flights-To-San-Francisco-Intl.d5195347.Travel-Guide-Flights) - [Flights to San Francisco](https://www.expedia.co.uk/Cheap-Flights-To-San-Francisco.d178305.Travel-Guide-Flights) - [Flights from San Francisco Intl.](https://www.expedia.co.uk/lp/airports/sfo/flights-from-san-francisco-intl-airport) - [Aer Lingus Dublin (DUB) to San Francisco (SFO) flights](https://www.expedia.co.uk/lp/flight-routes/aer-lingus-from-dublin-to-san-francisco-intl/ei/dub/sfo) - [Aer Lingus Edinburgh (EDI) to San Francisco (SFO) flights](https://www.expedia.co.uk/lp/flight-routes/aer-lingus-from-edinburgh-to-san-francisco-intl/ei/edi/sfo) - [Aer Lingus London (LCY) to San Francisco (SFO) flights](https://www.expedia.co.uk/lp/flight-routes/aer-lingus-from-london-city-to-san-francisco-intl/ei/lcy/sfo) - [Aer Lingus Manchester (MAN) to San Francisco (SFO) flights](https://www.expedia.co.uk/lp/flight-routes/aer-lingus-from-manchester-to-san-francisco-intl/ei/man/sfo) - [Aeroflot-Russian Airlines Moscow (SVO) to San Francisco (SFO) flights](https://www.expedia.co.uk/lp/flight-routes/aeroflot-russian-airlines-from-sheremetyevo-to-san-francisco-intl/su/svo/sfo) - [Air Caraibes Papeete (PPT) to San Francisco (SFO) flights](https://www.expedia.co.uk/lp/flight-routes/air-caraibes-from-tahiti-faaa-intl-to-san-francisco-intl/tx/ppt/sfo) - [Air France London (LHR) to San Francisco (SFO) flights](https://www.expedia.co.uk/lp/flight-routes/air-france-from-heathrow-to-san-francisco-intl/af/lhr/sfo) - [Air France Paris (CDG) to San Francisco (SFO) flights](https://www.expedia.co.uk/lp/flight-routes/air-france-from-roissy-charles-de-gaulle-to-san-francisco-intl/af/cdg/sfo) - [Alaska Airlines Honolulu (HNL) to San Francisco (SFO) flights](https://www.expedia.co.uk/lp/flight-routes/alaska-airlines-from-daniel-k-inouye-intl-to-san-francisco-intl/as/hnl/sfo) - [Alaska Airlines New York (JFK) to San Francisco (SFO) flights](https://www.expedia.co.uk/lp/flight-routes/alaska-airlines-from-john-f-kennedy-intl-to-san-francisco-intl/as/jfk/sfo) - [Alaska Airlines Orange County (SNA) to San Francisco (SFO) flights](https://www.expedia.co.uk/lp/flight-routes/alaska-airlines-from-john-wayne-to-san-francisco-intl/as/sna/sfo) - [Alaska Airlines Newark Liberty Intl. 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