Cheap flights from London to San Francisco from £368
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SFO
26 Apr — 3 May1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to San Francisco are usually found in February or September, booked 51 days in advance, depart on a Thursday or Wednesday and return on a Monday
Cheap flight deals from London to San Francisco
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Cheapest flights from London to San Francisco
Explore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 March 2026.
Wed 27/509:40
LHR
-
SFO
1 stop18h 56m
Delta
Tue 2/607:05
SFO
-
LHR
1 stop15h 40m
Delta
Deal found 25/3£388
Thu 23/413:25
LHR
-
SFO
1 stop17h 24m
Delta
Wed 27/517:37
SFO
-
LHR
1 stop13h 58m
Delta
Deal found 24/3£389
Thu 23/410:45
LHR
-
SFO
Nonstop11h 05m
British Airways
Thu 28/516:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 24/3£394
Thu 28/509:20
LHR
-
SFO
1 stop19h 44m
Delta
Mon 1/617:39
SFO
-
LHR
1 stop13h 56m
Delta
Deal found 25/3£395
Sat 25/409:20
LHR
-
SFO
1 stop17h 49m
Delta
Wed 27/513:35
SFO
-
LHR
1 stop18h 00m
Delta
Deal found 24/3£395
Wed 8/414:20
LHR
-
SFO
Nonstop11h 10m
British Airways
Fri 24/416:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 24/3£398
Thu 25/610:00
LHR
-
SFO
1 stop19h 44m
United Airlines
Wed 22/706:10
SFO
-
LHR
1 stop15h 45m
United Airlines
Deal found 24/3£401
Sat 30/509:40
LHR
-
SFO
1 stop19h 44m
Delta
Mon 1/617:39
SFO
-
LHR
1 stop13h 56m
Delta
Deal found 25/3£402
Wed 16/906:40
LHR
-
SFO
1 stop16h 00m
Scandinavian Airlines
Sun 20/916:45
SFO
-
LHR
1 stop16h 55m
Scandinavian Airlines
Deal found 27/3£403
Thu 28/510:45
LHR
-
SFO
1 stop15h 04m
Delta
Tue 2/608:50
SFO
-
LHR
1 stop16h 00m
Delta
Deal found 25/3£404
Fri 26/608:30
LHR
-
SFO
1 stop14h 57m
Air Canada
Tue 21/711:40
SFO
-
LHR
1 stop13h 55m
Air Canada
Deal found 24/3£407
Sun 24/512:25
LHR
-
SFO
1 stop16h 12m
Delta
Mon 1/617:39
SFO
-
LHR
1 stop13h 56m
Delta
Deal found 25/3£410
Best flights from London to San Francisco
Discover carefully curated flight deals from London to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 March 2026.
Mon 7/906:55
LHR
-
SFO
1 stop15h 25m
United Airlines
Sun 13/900:45
SFO
-
LHR
1 stop22h 55m
United Airlines
Deal found 27/3£456
Wed 6/506:15
LHR
-
SFO
1 stop17h 40m
British Airways
Sun 10/521:45
SFO
-
LHR
1 stop15h 55m
British Airways
Deal found 22/3£475
Tue 14/410:35
LHR
-
SFO
Nonstop11h 05m
Multiple Airlines
Tue 21/412:50
SFO
-
LHR
Nonstop10h 35m
Multiple Airlines
Deal found 27/3£478
Wed 6/518:40
LHR
-
SFO
1 stop29h 35m
SWISS
Sun 10/519:35
SFO
-
LHR
2 stops17h 55m
SWISS
Deal found 24/3£485
Sun 3/506:30
LHR
-
SFO
1 stop13h 15m
Delta
Tue 12/517:55
SFO
-
LHR
Nonstop10h 20m
Delta
Deal found 25/3£503
Thu 16/412:45
LHR
-
SFO
Nonstop11h 00m
KLM
Thu 23/423:15
SFO
-
LHR
Nonstop10h 15m
KLM
Deal found 25/3£516
Mon 27/406:30
LHR
-
SFO
1 stop13h 15m
Virgin Atlantic
Mon 4/516:17
SFO
-
LHR
1 stop14h 43m
Virgin Atlantic
Deal found 26/3£522
Wed 15/421:15
LGW
-
SFO
2 stops28h 40m
TAP AIR PORTUGAL
Fri 1/520:20
SFO
-
LGW
2 stops31h 00m
TAP AIR PORTUGAL
Deal found 23/3£625
Mon 1/612:20
LGW
-
SFO
1 stop20h 46m
JetBlue
Tue 9/612:03
SFO
-
LGW
1 stop13h 32m
JetBlue
Deal found 26/3£692
Wed 15/410:50
STN
-
SFO
1 stop37h 50m
Turkish Airlines
Thu 30/418:45
SFO
-
STN
1 stop31h 10m
Turkish Airlines
Deal found 24/3£704
Wed 23/908:40
LHR
-
SFO
1 stop15h 55m
United Airlines
Wed 30/916:50
SFO
-
LHR
Nonstop10h 20m
United Airlines
Deal found 23/3£459
Fri 8/509:25
LGW
-
SFO
1 stop14h 50m
SWISS
Thu 14/519:35
SFO
-
LGW
1 stop14h 15m
SWISS
Deal found 22/3£494
Thu 9/409:25
LTN
-
SFO
1 stop14h 25m
Multiple Airlines
Thu 16/417:35
SFO
-
LTN
1 stop21h 50m
Multiple Airlines
Deal found 22/3£529
Wed 6/513:00
LHR
-
SFO
Nonstop11h 10m
United Airlines
Sun 10/516:35
SFO
-
LHR
Nonstop10h 35m
United Airlines
Deal found 22/3£486
Tue 5/509:20
LCY
-
SFO
2 stops19h 31m
Virgin Atlantic
Tue 12/513:45
SFO
-
LCY
1 stop18h 55m
Virgin Atlantic
Deal found 22/3£547
Wed 6/520:50
LTN
-
SFO
2 stops24h 25m
Multiple Airlines
Sun 10/515:15
SFO
-
LTN
2 stops20h 55m
Multiple Airlines
Deal found 24/3£543
Sat 18/410:25
LGW
-
SFO
1 stop15h 35m
Delta
Mon 27/415:05
SFO
-
LGW
1 stop16h 55m
Delta
Deal found 27/3£603
Thu 7/509:20
LCY
-
SFO
2 stops19h 44m
Virgin Atlantic
Mon 11/505:50
SFO
-
LCY
2 stops19h 40m
Virgin Atlantic
Deal found 25/3£549
Tue 14/409:25
LGW
-
SFO
2 stops18h 20m
SWISS
Tue 21/414:30
SFO
-
LGW
2 stops19h 20m
SWISS
Deal found 27/3£558
Sat 18/416:15
LHR
-
SFO
Nonstop11h 05m
United Airlines
Mon 27/413:20
SFO
-
LHR
1 stop16h 00m
United Airlines
Deal found 27/3£508
Wed 15/421:15
LGW
-
SFO
2 stops27h 05m
TAP AIR PORTUGAL
Thu 30/419:55
SFO
-
LGW
2 stops31h 25m
TAP AIR PORTUGAL
Deal found 25/3£628
Thu 10/915:30
LCY
-
SFO
2 stops39h 21m
British Airways
Mon 14/917:35
SFO
-
LCY
1 stop15h 45m
British Airways
Deal found 22/3£651
Fri 8/506:20
LTN
-
SFO
1 stop17h 30m
Multiple Airlines
Fri 15/517:35
SFO
-
LTN
1 stop15h 50m
Multiple Airlines
Deal found 24/3£552
Sun 19/420:45
LCY
-
SFO
1 stop23h 00m
Virgin Atlantic
Sun 26/413:45
SFO
-
LCY
1 stop19h 35m
Virgin Atlantic
Deal found 22/3£555
Tue 22/917:35
STN
-
SFO
1 stop31h 05m
Turkish Airlines
Thu 1/1012:55
SFO
-
STN
1 stop19h 45m
Turkish Airlines
Deal found 26/3£728
Mon 27/409:25
LGW
-
SFO
1 stop14h 50m
SWISS
Wed 6/514:30
SFO
-
LGW
2 stops19h 25m
SWISS
Deal found 26/3£611
Wed 15/406:15
LTN
-
SFO
1 stop17h 40m
Multiple Airlines
Mon 20/417:35
SFO
-
LTN
1 stop14h 10m
Multiple Airlines
Deal found 22/3£582
Tue 1/919:00
LCY
-
SFO
1 stop24h 45m
Virgin Atlantic
Sat 12/913:05
SFO
-
LCY
2 stops21h 25m
Virgin Atlantic
Deal found 27/3£610
Mon 21/909:25
LGW
-
SFO
1 stop14h 50m
SWISS
Mon 28/914:40
SFO
-
LGW
2 stops19h 10m
SWISS
Deal found 24/3£627
Tue 7/409:40
LTN
-
SFO
1 stop14h 15m
Multiple Airlines
Tue 14/417:40
SFO
-
LTN
1 stop13h 50m
Multiple Airlines
Deal found 27/3£583
Direct flights from London to San Francisco
Explore direct flight options from London to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 27 March 2026.
Thu 23/410:45
LHR
-
SFO
Nonstop11h 05m
British Airways
Thu 28/516:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 24/3£394
Wed 8/414:20
LHR
-
SFO
Nonstop11h 10m
British Airways
Fri 24/416:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 24/3£398
Thu 23/414:30
LHR
-
SFO
Nonstop11h 10m
British Airways
Mon 25/516:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 24/3£420
Thu 23/414:30
LHR
-
SFO
Nonstop11h 10m
British Airways
Tue 26/519:30
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 24/3£421
Wed 16/914:20
LHR
-
SFO
Nonstop11h 10m
British Airways
Tue 22/916:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 27/3£425
Wed 8/410:45
LHR
-
SFO
Nonstop11h 05m
British Airways
Sat 25/416:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 24/3£445
Thu 17/914:30
LHR
-
SFO
Nonstop11h 10m
British Airways
Tue 22/916:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 27/3£446
Wed 16/910:45
LHR
-
SFO
Nonstop11h 05m
British Airways
Sun 20/916:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 27/3£448
Thu 23/410:45
LHR
-
SFO
Nonstop11h 05m
British Airways
Sun 10/519:30
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 23/3£455
Thu 9/410:45
LHR
-
SFO
Nonstop11h 05m
British Airways
Sun 26/416:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 24/3£456
Thu 23/414:30
LHR
-
SFO
Nonstop11h 10m
British Airways
Wed 27/516:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 24/3£458
Tue 23/610:45
LHR
-
SFO
Nonstop11h 05m
British Airways
Tue 21/719:30
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 24/3£459
Last-minute flights from London to San Francisco
Discover last-minute flight deals from London to San Francisco. Data last updated 27 March 2026 and is based on user searches.
Wed 1/412:25
LHR
-
SFO
1 stop16h 34m
Delta
Tue 28/413:09
SFO
-
LHR
1 stop13h 51m
Delta
Deal found 25/3£446
Wed 1/406:55
LHR
-
SFO
1 stop15h 35m
Lufthansa
Thu 30/416:35
SFO
-
LHR
Nonstop10h 35m
Lufthansa
Deal found 24/3£451
Wed 1/406:55
LHR
-
SFO
1 stop20h 05m
Lufthansa
Mon 6/419:30
SFO
-
LHR
Nonstop10h 40m
Lufthansa
Deal found 23/3£457
Thu 2/414:30
LHR
-
SFO
Nonstop11h 10m
British Airways
Tue 28/416:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 25/3£446
Thu 2/407:30
LHR
-
SFO
1 stop20h 30m
Lufthansa
Thu 23/421:05
SFO
-
LHR
1 stop17h 35m
Lufthansa
Deal found 23/3£455
Fri 3/417:45
LHR
-
SFO
1 stop14h 12m
Delta
Sat 2/514:57
SFO
-
LHR
1 stop16h 38m
Delta
Deal found 25/3£450
Sat 4/409:40
LHR
-
SFO
1 stop20h 01m
Delta
Tue 28/414:00
SFO
-
LHR
1 stop15h 15m
Delta
Deal found 25/3£448
Mon 6/406:00
LHR
-
SFO
1 stop18h 15m
SWISS
Tue 19/513:15
SFO
-
LHR
1 stop19h 10m
SWISS
Deal found 23/3£449
Wed 15/412:05
LGW
-
SFO
1 stop37h 50m
LEVEL
Thu 23/419:40
SFO
-
LGW
1 stop19h 30m
LEVEL
Deal found 26/3£456
Thu 16/409:25
LGW
-
SFO
1 stop14h 50m
SWISS
Wed 29/419:35
SFO
-
LGW
1 stop14h 20m
SWISS
Deal found 23/3£451
Thu 16/409:25
LGW
-
SFO
1 stop14h 50m
SWISS
Sun 19/419:35
SFO
-
LGW
1 stop14h 15m
SWISS
Deal found 24/3£452
Fri 24/409:25
LGW
-
SFO
1 stop14h 50m
SWISS
Sun 3/519:35
SFO
-
LGW
1 stop14h 15m
SWISS
Deal found 24/3£452
One-way flights from London to San Francisco
Search for one-way flight options from London to San Francisco. Find affordable one-way fares based on user searches. Data last updated 27 March 2026.
Sun 7/619:00
LTN
-
SFO
2 stops34h 55m
Multiple Airlines
Deal found 22/3£368
Mon 11/509:15
LCY
-
SFO
2 stops23h 35m
Lufthansa
Deal found 23/3£368
Mon 1/619:40
LTN
-
SFO
2 stops33h 24m
Multiple Airlines
Deal found 22/3£369
Tue 14/408:50
LGW
-
SFO
3 stops35h 15m
Multiple Airlines
Deal found 23/3£369
Tue 14/408:30
STN
-
SFO
3 stops35h 35m
Multiple Airlines
Deal found 23/3£369
Wed 8/420:50
LHR
-
SFO
2 stops27h 35m
Multiple Airlines
Deal found 26/3£370
Mon 4/509:25
LGW
-
SFO
1 stop14h 50m
SWISS
Deal found 25/3£370
Sat 2/506:35
STN
-
SFO
3 stops37h 25m
Multiple Airlines
Deal found 26/3£370
Tue 5/509:15
LCY
-
SFO
2 stops23h 35m
Lufthansa
Deal found 25/3£370
Mon 11/508:40
LHR
-
SFO
2 stops34h 45m
Air Canada
Deal found 27/3£371
Sun 31/514:00
LGW
-
SFO
1 stop28h 41m
Multiple Airlines
Deal found 27/3£371
Mon 1/620:45
STN
-
SFO
1 stop27h 25m
Multiple Airlines
Deal found 27/3£371
Find flight deals from London to San Francisco
Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 27 March 2026.
Customise your flight search to find flights from London to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 27 March 2026.
Use the filters below to find and compare flights from London to San Francisco that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Mon 7/9
06:55-14:20
1 stop15h 25m
San Francisco
Sun 13/9
00:45-07:40
1 stop22h 55m
£456
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Wed 23/9
08:40-16:35
1 stop15h 55m
San Francisco
Wed 30/9
16:50-11:10
Nonstop10h 20m
£459
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Wed 6/5
06:15-15:55
1 stop17h 40m
San Francisco
Sun 10/5
21:45-21:40
1 stop15h 55m
£475
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Tue 14/4
10:35-13:40
Nonstop11h 05m
San Francisco
Tue 21/4
12:50-07:25
Nonstop10h 35m
£478
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Wed 6/5
18:40-16:15
1 stop29h 35m
San Francisco
Sun 10/5
19:35-21:30
2 stops17h 55m
£485
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Wed 6/5
13:00-16:10
Nonstop11h 10m
San Francisco
Sun 10/5
16:35-11:10
Nonstop10h 35m
£486
LondonSan Francisco
LGW - SFO
LGWSFO
London Gatwick
Fri 8/5
09:25-16:15
1 stop14h 50m
San Francisco
Thu 14/5
19:35-17:50
1 stop14h 15m
£494
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Sun 3/5
06:30-11:45
1 stop13h 15m
San Francisco
Tue 12/5
17:55-12:15
Nonstop10h 20m
£503
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Sat 18/4
16:15-19:20
Nonstop11h 05m
San Francisco
Mon 27/4
13:20-13:20
1 stop16h 00m
£508
Fastest return journey
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Thu 16/4
12:45-15:45
Nonstop11h 00m
San Francisco
Thu 23/4
23:15-17:30
Nonstop10h 15m
£516
Flights are sorted by cheapest return flights first.
Deals found on 27/3
Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6
Best time to book a flight from London to San Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from London with our price prediction graph.
LON-SFO
LHR-SFO
LGW-SFO
STN-SFO
LTN-SFO
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from London to San Francisco
LON-SFO
LHR-SFO
LGW-SFO
STN-SFO
LTN-SFO
How far ahead should I book a flight from London to San Francisco?
Use this chart to determine the optimal time to book a return flight from London to San Francisco. Price data was last updated on 13 March 2026.
To ensure you get the cheapest price possible for a flight from London to San Francisco, you should look to book at least 51 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from London to San Francisco?
Currently, February is the cheapest month in which you can book a flight from London to San Francisco (average of £357). Flying from London to San Francisco in July is currently the most expensive (average of £440). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from LON to SFO?
Find hourly flight availability from London to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 March 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to San Francisco as you normally would.
How much does it cost for a return flight from London to San Francisco?
What’s the top stopover airport for flights from London to San Francisco?
Share of one-stop return flights from London to San Francisco chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Copenhagen (CPH) – chosen by Cheapflights users on 32% of one-stop itineraries from London to San Francisco on Cheapflights.
What’s the cheapest stopover airport for flights from London to San Francisco?
Average return fare for one-stop flights from London to San Francisco, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Zurich (ZRH) is the most affordable one-stop option, with an average return flight price of £384.
What’s the fastest stopover option from London to San Francisco?
Shortest average travel time for one-stop one-way flights from London to San Francisco, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 13h 15m.
Which airport typically offers the quickest stopover for flights from London to San Francisco?
Average stopover duration for one-stop one-way flights from London to San Francisco, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 07m.
How often are flights from London to San Francisco delayed?
About 11% of weekly flights between London and San Francisco have experienced delays in the past year, with the average delay time being 144 minutes.
What is the most punctual flight time for London to San Francisco flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to San Francisco flights?
Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 10% of flights being delayed.
Reviews of airlines servicing San Francisco
Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated 27 March 2026.
Read reviews from past customers who have flown with Austrian Airlines,Virgin Atlantic, andUnited Airlines
from London to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
Related info for your journey
Find useful and relevant information for your journey from London to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly into for flights to San Francisco from London?
San Francisco (SFO) is the airport you will fly into if you book a flight from London to San Francisco. You should not have trouble finding flights to San Francisco from London; the airport handles an average of 16 inbound flights from London per day. You should also have plenty of airline options to choose from since 18 airlines have flights to the San Francisco airport from London. It is only a 11.0 mi journey from San Francisco (SFO) to San Francisco’s city center.
How long is the flight from London to San Francisco?
There are many flights that can get you from London to San Francisco in 15h 25m. Fly via United Airlines, British Airways, or Virgin Atlantic to get the fastest option. London and San Francisco are separated by a distance of 5350 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London to San Francisco round-trip?
Flying on Delta is currently your cheapest option to San Francisco, with prices starting at £324. Additional return tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at £338 and £350, respectively. Delta is priced at 35% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from London to San Francisco one-way?
To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at £273. WestJet flights start at £303 while deals on Scandinavian Airlines start at £306 one-way.
What are the most popular routes from London to San Francisco?
When deciding which route to take from London to San Francisco consider London Heathrow - San Francisco, London Gatwick - San Francisco or London Stansted - San Francisco as they are the most popular.
What are the most reliable airlines from London to San Francisco?
Consider KLM (93%), Air France (93%) or Delta (93%) when booking your flight. These represent the most reliable airlines when flying from London to San Francisco.
What are the cheapest flights from London to San Francisco?
The cheapest flight price from London to San Francisco is £378. On average you can expect to pay £2,069. The most popular route, (London Heathrow - San Francisco), can usually be booked for £377.
Can I find deals for business class flights from London to San Francisco?
Yes. Cheapflights offers flight deals from London to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London to San Francisco?
Currently, February is the cheapest month in which you can book a flight from London to San Francisco (average of £357). Flying from London to San Francisco in July is currently the most expensive (average of £440). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What are the most eco-friendly airlines from London to San Francisco?
If you are looking for flights to San Francisco from London that are eco-friendly, there are a couple of airlines that we can recommend. The recommended airlines are Brussels Airlines, Finnair, Jetblue and Singapore Airlines. If you choose to fly with Brussels Airlines, you will be flying with an airline that trains its pilots only to use one engine during taxiing and limited flaps while landing. This saves a lot of fuel. The fleet of aircraft for long-haul flights has also been replaced with models consuming 3.1% less fuel. Finnair is another great option for sustainable travel. They plan to cut their carbon emissions by 2025 by 50% from 2019’s level. This airline is also working on sustainable catering. Jetblue uses Airbus A320neos which improve fuel economy by 15%. This airline also uses Sharklets, which are wing tip devices that improve aerodynamics and reduce carbon emissions by 4%. Singapore Airlines is another great airline to fly with for eco-friendly travel. This airline is working on sustainable fuel and regularly replaces its planes with newer models that consume less fuel.
How to fly more sustainably from London to San Francisco?
There are many great ways to travel more sustainably to San Francisco from London. One of the best ways you can do this is by taking a direct flight. Taking a direct flight uses less fuel than taking a flight route with more than one stopover. If you can, you should also fly in economy class. The economy class takes up less room in the aircraft and therefore can hold more passengers. Another great eco-friendly way to travel is by packing light. The lighter you pack, the less fuel the aircraft will use. Flying with an airline that has sustainable travel methods in place is super beneficial for the planet. If you have the option, try to fly with Brussels Airlines, Finnair, Jetblue or Singapore Airlines.
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Travelling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Newark
San Bruno
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South San Francisco
Sunnyvale
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Fly from London to San Francisco on these airlines
Choose from the following airlines for your flight from London to San Francisco. Flights are based on user searches made on Cheapflights and were last updated on 27 March 2026.
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 27 March 2026.
Top 10 airlines flying from London to San Francisco
Discover the top 10 airlines that operate flights from London to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 27 March 2026.
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How does Cheapflights help users find flights from London to San Francisco?
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to San Francisco. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
Why should you use Cheapflights to find cheap flight tickets from London to San Francisco?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to San Francisco for you. Better yet — we are completely free to use.
Can Cheapflights find flights from London to San Francisco with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from London to San Francisco flexibly with Cheapflights today.
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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!
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