Cheap flights from London to San Francisco from £379
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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SFO
7 Dec — 14 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to San Francisco are usually found in September or February, booked 51 days in advance, depart on a Thursday or Tuesday and return on a Wednesday
Cheap 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 7 November 2025.
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 7 November 2025.
Wed 26/1106:00LHR - SFO
1 stop16h 30mTAP AIR PORTUGAL
Wed 3/1216:35SFO - LHR
1 stop16h 55mTAP AIR PORTUGAL
Deal found 6/11£396
Mon 24/1106:00LHR - SFO
1 stop16h 35mTAP AIR PORTUGAL
Sat 29/1116:35SFO - LHR
1 stop22h 05mTAP AIR PORTUGAL
Deal found 5/11£402
Sat 8/1106:00LHR - SFO
1 stop16h 45mTAP AIR PORTUGAL
Fri 14/1119:10SFO - LHR
1 stop15h 45mTAP AIR PORTUGAL
Deal found 4/11£408
Sat 6/1206:00LHR - SFO
1 stop16h 45mTAP AIR PORTUGAL
Mon 12/116:35SFO - LHR
1 stop16h 55mTAP AIR PORTUGAL
Deal found 5/11£409
Thu 4/1216:30LHR - SFO
1 stop31h 35mTAP AIR PORTUGAL
Wed 10/1216:35SFO - LHR
1 stop22h 05mTAP AIR PORTUGAL
Deal found 5/11£409
Tue 9/1210:40LGW - SFO
1 stop35h 50mTAP AIR PORTUGAL
Fri 9/119:10SFO - LGW
1 stop30h 40mTAP AIR PORTUGAL
Deal found 5/11£410
Sat 6/1206:00LHR - SFO
1 stop16h 45mTAP AIR PORTUGAL
Mon 2/216:35SFO - LHR
1 stop22h 05mTAP AIR PORTUGAL
Deal found 6/11£411
Tue 9/1208:15LHR - SFO
1 stop38h 15mTAP AIR PORTUGAL
Fri 9/119:10SFO - LHR
1 stop15h 45mTAP AIR PORTUGAL
Deal found 5/11£413
Sun 23/1119:55LHR - SFO
1 stop26h 40mTAP AIR PORTUGAL
Sat 6/1216:35SFO - LHR
1 stop16h 55mTAP AIR PORTUGAL
Deal found 6/11£415
Thu 4/1217:30LHR - SFO
2 stops29h 05mScandinavian Airlines
Mon 8/1216:40SFO - LHR
1 stop15h 20mScandinavian Airlines
Deal found 5/11£419
Sat 6/1206:40LHR - SFO
1 stop15h 55mScandinavian Airlines
Mon 12/116:40SFO - LHR
2 stops18h 10mScandinavian Airlines
Deal found 5/11£421
Wed 10/1206:00LHR - SFO
1 stop16h 30mTAP AIR PORTUGAL
Mon 29/1216:35SFO - LHR
1 stop22h 05mTAP AIR PORTUGAL
Deal found 6/11£422
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 7 November 2025.
Mon 2/306:40LHR - SFO
1 stop15h 55mScandinavian Airlines
Tue 10/317:40SFO - LHR
2 stops18h 10mScandinavian Airlines
Deal found 6/11£435
Tue 14/412:10LGW - SFO
2 stops60h 25mTAP AIR PORTUGAL
Tue 21/416:35SFO - LGW
1 stop33h 10mTAP AIR PORTUGAL
Deal found 6/11£445
Mon 24/1106:30STN - SFO
1 stop17h 05mMultiple Airlines
Mon 1/1217:20SFO - STN
1 stop20h 00mMultiple Airlines
Deal found 6/11£450
Tue 10/318:40LGW - SFO
1 stop29h 50mSWISS
Tue 17/320:25SFO - LGW
1 stop14h 25mSWISS
Deal found 6/11£464
Wed 4/209:00LHR - SFO
1 stop15h 30mUnited Airlines
Wed 18/217:25SFO - LHR
Nonstop10h 35mUnited Airlines
Deal found 6/11£465
Sun 23/1120:05LCY - SFO
2 stops30h 09mVirgin Atlantic
Sat 6/1213:55SFO - LCY
1 stop15h 20mVirgin Atlantic
Deal found 6/11£511
Wed 26/1109:50LCY - SFO
1 stop14h 05mLufthansa
Wed 3/1218:50SFO - LCY
1 stop13h 50mLufthansa
Deal found 6/11£517
Thu 5/308:40LCY - SFO
2 stops20h 19mDelta
Mon 9/306:45SFO - LCY
2 stops19h 45mDelta
Deal found 5/11£529
Sat 21/206:40LHR - SFO
1 stop15h 55mScandinavian Airlines
Sun 1/316:40SFO - LHR
1 stop17h 00mScandinavian Airlines
Deal found 5/11£435
Mon 8/1206:30STN - SFO
1 stop17h 05mMultiple Airlines
Mon 15/1217:20SFO - STN
1 stop13h 00mMultiple Airlines
Deal found 6/11£450
Mon 2/309:00LHR - SFO
1 stop15h 30mUnited Airlines
Tue 10/318:25SFO - LHR
Nonstop10h 35mUnited Airlines
Deal found 6/11£465
Mon 9/221:25LGW - SFO
2 stops49h 05mTAP AIR PORTUGAL
Fri 20/219:10SFO - LGW
1 stop30h 40mTAP AIR PORTUGAL
Deal found 6/11£476
Sat 7/315:35LHR - SFO
2 stops31h 00mScandinavian Airlines
Mon 16/317:40SFO - LHR
2 stops15h 45mScandinavian Airlines
Deal found 6/11£438
Thu 5/318:40LGW - SFO
1 stop29h 50mSWISS
Mon 9/320:25SFO - LGW
1 stop14h 25mSWISS
Deal found 4/11£493
Wed 26/1118:55LCY - SFO
1 stop24h 55mVirgin Atlantic
Tue 2/1213:55SFO - LCY
1 stop18h 40mVirgin Atlantic
Deal found 6/11£513
Mon 16/309:00LHR - SFO
1 stop15h 30mUnited Airlines
Mon 23/318:25SFO - LHR
Nonstop10h 35mUnited Airlines
Deal found 5/11£467
Fri 21/1105:50LTN - SFO
1 stop17h 45mMultiple Airlines
Fri 28/1117:20SFO - LTN
1 stop14h 55mMultiple Airlines
Deal found 6/11£474
Sat 13/1210:10LGW - SFO
2 stops60h 25mTAP AIR PORTUGAL
Sat 10/116:35SFO - LGW
1 stop33h 15mTAP AIR PORTUGAL
Deal found 6/11£483
Tue 17/306:40LHR - SFO
1 stop15h 55mScandinavian Airlines
Tue 24/317:40SFO - LHR
1 stop15h 20mScandinavian Airlines
Deal found 6/11£441
Mon 13/408:10LCY - SFO
1 stop16h 00mSWISS
Mon 20/419:40SFO - LCY
1 stop13h 35mSWISS
Deal found 6/11£494
Sat 14/208:40LCY - SFO
2 stops22h 18mVirgin Atlantic
Thu 12/314:55SFO - LCY
1 stop21h 40mVirgin Atlantic
Deal found 5/11£525
Mon 13/408:45LHR - SFO
1 stop15h 25mUnited Airlines
Mon 20/416:40SFO - LHR
Nonstop10h 30mUnited Airlines
Deal found 6/11£478
Mon 24/1109:40LGW - SFO
1 stop13h 55mMultiple Airlines
Mon 1/1217:20SFO - LGW
1 stop18h 05mMultiple Airlines
Deal found 6/11£479
Wed 11/317:00LHR - SFO
1 stop29h 35mScandinavian Airlines
Sun 22/317:40SFO - LHR
1 stop17h 00mScandinavian Airlines
Deal found 5/11£442
Mon 17/1121:25LGW - SFO
2 stops49h 05mTAP AIR PORTUGAL
Mon 8/1216:35SFO - LGW
2 stops20h 00mTAP AIR PORTUGAL
Deal found 6/11£505
Thu 5/319:10LCY - SFO
1 stop29h 20mSWISS
Mon 9/320:25SFO - LCY
1 stop33h 30mSWISS
Deal found 6/11£516
Wed 3/1217:50LCY - SFO
1 stop26h 00mVirgin Atlantic
Wed 10/1205:50SFO - LCY
2 stops18h 20mVirgin Atlantic
Deal found 5/11£526
Thu 8/121:30STN - SFO
2 stops32h 09mMultiple Airlines
Wed 14/119:25SFO - STN
2 stops19h 25mMultiple Airlines
Deal found 5/11£485
Mon 20/419:30LHR - SFO
1 stop27h 10mScandinavian Airlines
Mon 27/416:45SFO - LHR
1 stop16h 55mScandinavian Airlines
Deal found 4/11£447
Fri 21/1116:40LGW - SFO
1 stop30h 05mTAP AIR PORTUGAL
Fri 16/119:10SFO - LGW
1 stop30h 40mTAP AIR PORTUGAL
Deal found 5/11£507
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 7 November 2025.
Thu 4/1215:25LHR - SFO
Nonstop11h 20mBritish Airways
Wed 10/1220:40SFO - LHR
Nonstop10h 30mBritish Airways
Deal found 5/11£466
Tue 13/111:45LHR - SFO
Nonstop11h 15mBritish Airways
Fri 23/117:30SFO - LHR
Nonstop10h 30mBritish Airways
Deal found 5/11£467
Wed 21/111:45LHR - SFO
Nonstop11h 15mBritish Airways
Wed 11/217:30SFO - LHR
Nonstop10h 30mBritish Airways
Deal found 6/11£469
Wed 3/1211:45LHR - SFO
Nonstop11h 15mBritish Airways
Wed 10/1217:30SFO - LHR
Nonstop10h 30mBritish Airways
Deal found 5/11£470
Fri 5/1211:45LHR - SFO
Nonstop11h 15mBritish Airways
Tue 9/1220:40SFO - LHR
Nonstop10h 30mBritish Airways
Deal found 6/11£470
Fri 16/111:45LHR - SFO
Nonstop11h 15mBritish Airways
Sun 1/217:30SFO - LHR
Nonstop10h 30mBritish Airways
Deal found 7/11£471
Wed 18/215:25LHR - SFO
Nonstop11h 20mBritish Airways
Wed 4/317:30SFO - LHR
Nonstop10h 30mBritish Airways
Deal found 4/11£472
Thu 4/1211:45LHR - SFO
Nonstop11h 15mBritish Airways
Mon 8/1220:40SFO - LHR
Nonstop10h 30mBritish Airways
Deal found 5/11£473
Sat 17/111:45LHR - SFO
Nonstop11h 15mBritish Airways
Mon 2/217:30SFO - LHR
Nonstop10h 30mBritish Airways
Deal found 5/11£474
Wed 4/211:45LHR - SFO
Nonstop11h 15mBritish Airways
Wed 18/217:30SFO - LHR
Nonstop10h 30mBritish Airways
Deal found 6/11£475
Fri 12/1215:25LHR - SFO
Nonstop11h 20mBritish Airways
Sun 11/120:40SFO - LHR
Nonstop10h 30mBritish Airways
Deal found 5/11£476
Last-minute flights from London to San Francisco
Discover last-minute flight deals from London to San Francisco. Data last updated 7 November 2025 and is based on user searches.
Sat 8/1106:00LHR - SFO
1 stop16h 45mTAP AIR PORTUGAL
Fri 14/1119:10SFO - LHR
1 stop15h 45mTAP AIR PORTUGAL
Deal found 4/11£408
Sun 23/1110:40LGW - SFO
1 stop35h 55mTAP AIR PORTUGAL
Sat 6/1216:35SFO - LGW
1 stop33h 15mTAP AIR PORTUGAL
Deal found 7/11£412
Sun 23/1119:55LHR - SFO
1 stop26h 40mTAP AIR PORTUGAL
Wed 10/1216:35SFO - LHR
1 stop16h 55mTAP AIR PORTUGAL
Deal found 5/11£415
Mon 24/1106:00LHR - SFO
1 stop16h 35mTAP AIR PORTUGAL
Sat 29/1116:35SFO - LHR
1 stop22h 05mTAP AIR PORTUGAL
Deal found 5/11£402
Wed 26/1106:00LHR - SFO
1 stop16h 30mTAP AIR PORTUGAL
Wed 3/1216:35SFO - LHR
1 stop16h 55mTAP AIR PORTUGAL
Deal found 6/11£396
Thu 4/1216:30LHR - SFO
1 stop31h 35mTAP AIR PORTUGAL
Wed 10/1216:35SFO - LHR
1 stop22h 05mTAP AIR PORTUGAL
Deal found 5/11£409
Thu 4/1216:00LGW - SFO
1 stop32h 05mTAP AIR PORTUGAL
Mon 8/1216:35SFO - LGW
2 stops20h 00mTAP AIR PORTUGAL
Deal found 7/11£415
Thu 4/1217:30LHR - SFO
2 stops29h 05mScandinavian Airlines
Mon 8/1216:40SFO - LHR
1 stop15h 20mScandinavian Airlines
Deal found 5/11£419
Sat 6/1206:00LHR - SFO
1 stop16h 45mTAP AIR PORTUGAL
Mon 12/116:35SFO - LHR
1 stop16h 55mTAP AIR PORTUGAL
Deal found 5/11£409
Sat 6/1206:00LHR - SFO
1 stop16h 45mTAP AIR PORTUGAL
Mon 2/216:35SFO - LHR
1 stop22h 05mTAP AIR PORTUGAL
Deal found 6/11£411
Tue 9/1210:40LGW - SFO
1 stop35h 50mTAP AIR PORTUGAL
Fri 9/119:10SFO - LGW
1 stop30h 40mTAP AIR PORTUGAL
Deal found 5/11£410
Tue 9/1208:15LHR - SFO
1 stop38h 15mTAP AIR PORTUGAL
Fri 9/119:10SFO - LHR
1 stop15h 45mTAP AIR PORTUGAL
Deal found 5/11£413
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 7 November 2025.
Thu 11/1218:10LGW - SFO
1 stop34h 00mMultiple Airlines
Deal found 5/11£379
Wed 10/1207:10SEN - SFO
1 stop21h 00mMultiple Airlines
Deal found 5/11£379
Wed 3/1214:50LHR - SFO
2 stops26h 40mMultiple Airlines
Deal found 4/11£380
Mon 24/1108:00LGW - SFO
3 stops33h 30mMultiple Airlines
Deal found 5/11£380
Sat 7/308:40LCY - SFO
2 stops22h 19mBritish Airways
Deal found 4/11£380
Wed 25/310:05LHR - SFO
Nonstop11h 15mAustrian Airlines
Deal found 6/11£381
Mon 24/1121:20STN - SFO
2 stops49h 10mMultiple Airlines
Deal found 5/11£381
Thu 13/1106:50SEN - SFO
2 stops41h 15mMultiple Airlines
Deal found 5/11£381
Sat 21/318:30LTN - SFO
1 stop33h 40mMultiple Airlines
Deal found 5/11£382
Sat 17/110:05LHR - SFO
Nonstop11h 15mLufthansa
Deal found 6/11£382
Wed 25/310:05LHR - SFO
Nonstop11h 15mLufthansa
Deal found 5/11£383
Sat 15/1116:55LGW - SFO
2 stops53h 40mMultiple Airlines
Deal found 5/11£383
Cheapflights Fare Finder
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 7 November 2025.
Use the filters below to find and compare flights from London to San Francisco that are best for you.
Fly from
London
Fly to
San Francisco
Route
Depart
Return
Price
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Mon 2/3
06:40-14:35
1 stop15h 55m
San Francisco
Tue 10/3
17:40-18:50
2 stops18h 10m
£435
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Sat 21/2
06:40-14:35
1 stop15h 55m
San Francisco
Sun 1/3
16:40-17:40
1 stop17h 00m
£435
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Sat 7/3
15:35-14:35
2 stops31h 00m
San Francisco
Mon 16/3
17:40-16:25
2 stops15h 45m
£438
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Tue 17/3
06:40-15:35
1 stop15h 55m
San Francisco
Tue 24/3
17:40-16:00
1 stop15h 20m
£441
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Wed 11/3
17:00-15:35
1 stop29h 35m
San Francisco
Sun 22/3
17:40-17:40
1 stop17h 00m
£442
LondonSan Francisco
LGW - SFO
LGWSFO
London Gatwick
Tue 14/4
12:10-16:35
2 stops60h 25m
San Francisco
Tue 21/4
16:35-09:45
1 stop33h 10m
£445
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Mon 20/4
19:30-14:40
1 stop27h 10m
San Francisco
Mon 27/4
16:45-17:40
1 stop16h 55m
£447
LondonSan Francisco
STN - SFO
STNSFO
London Stansted
Mon 24/11
06:30-15:35
1 stop17h 05m
San Francisco
Mon 1/12
17:20-21:20
1 stop20h 00m
£450
LondonSan Francisco
STN - SFO
STNSFO
London Stansted
Mon 8/12
06:30-15:35
1 stop17h 05m
San Francisco
Mon 15/12
17:20-14:20
1 stop13h 00m
£450
LondonSan Francisco
LGW - SFO
LGWSFO
London Gatwick
Tue 10/3
18:40-17:30
1 stop29h 50m
San Francisco
Tue 17/3
20:25-17:50
1 stop14h 25m
£464
Flights are sorted by cheapest return flights first.
Deals found on 4/11
Showing 1-10 of 60 results
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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.
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
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 31 October 2025.
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, December is the cheapest month in which you can book a flight from London to San Francisco (average of £346). Flying from London to San Francisco in July is currently the most expensive (average of £468). 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 7 November 2025.
Unlike at midday, when flights are generally more expensive, you can save up to 9% on flights from London to San Francisco by exploring options for tickets in the evening.
What is the cheapest day to fly from London to San Francisco?
Use this chart to determine the cheapest time to fly return from London to San Francisco. Price data was last updated on 16 December 2024.
Travellers seeking maximum savings on their London to San Francisco flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from London to San Francisco
Explore weekly flight availability from London to San Francisco. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 7 November 2025.
The most flights from LON to SFO are scheduled on a Monday (31 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (31 on average).
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.
Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £386.
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 17m.
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 06m.
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 7 November 2025.
Read reviews from past customers who have flown with KLM, 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.
The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
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 31 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 11.8 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 55m. Fly via Scandinavian Airlines, TAP AIR PORTUGAL, or SWISS 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 £244. Additional return tickets that might be worth considering are offered by Air Canada and Aer Lingus, with the lowest prices starting at £344 and £359, respectively. Delta is priced at 52% 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 United Airlines, which is currently one of the cheapest options available, starting at £382. British Airways flights start at £382 while deals on Lufthansa start at £390 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 City - San Francisco as they are the most popular.
What are the most reliable airlines from London to San Francisco?
Consider Air New Zealand (84%), Air Canada (82%) or Austrian Airlines (82%) 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 £331. On average you can expect to pay £2,197. The most popular route, (London Heathrow - San Francisco), can usually be booked for £366.
Where are the most common stopover locations when flying from London to San Francisco?
Most of the time, London to San Francisco flights that have stopovers will stop in Copenhagen. Copenhagen is followed by Lisbon in terms of the most popular stopover location on flights from London to San Francisco.
What are some popular things to do or see while on a stopover in Copenhagen?
Tivoli, Rådhuspladsen, and Opera House are currently the most popular points of interest in Copenhagen at the moment. Tivoli, Rådhuspladsen, and Opera House can be accessed by travelling approximately 5.3 mi, 5.2 mi, and 4.9 mi, respectively from Kastrup Copenhagen. Travellers can book a car hire at Kastrup Copenhagen for about £24 per day to make their sightseeing more efficient.
What are some popular points of interest to see during a stopover in Lisbon?
Chiado, Londres, and Sé de Lisboa are the most popular attractions in Lisbon if you're in need of something to do during your stopover. Chiado, Londres, and Sé de Lisboa can be accessed by travelling approximately 4.5 mi, 2.3 mi, and 4.6 mi, respectively from Lisbon Humberto Delgado. Those looking to explore during their stopover in Lisbon can hire a car from Lisbon Humberto Delgado for about £11 per day.
Where are the least popular stopover locations for London to San Francisco flights?
The least popular stopover on flights from London to San Francisco is Dublin.
Can I find deals for flights from London to San Francisco that include hotel bookings?
Yes. In addition to deals on London to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to San Francisco.
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, December is the cheapest month in which you can book a flight from London to San Francisco (average of £346). Flying from London to San Francisco in July is currently the most expensive (average of £468). 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
South San Francisco
San Bruno
Bodega Bay
Pacific Grove
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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 7 November 2025.
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 7 November 2025.
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 7 November 2025.
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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.
Can Cheapflights notify me if prices for flights from London to San Francisco become cheaper?
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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