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Cheap flights from London to San Francisco Bay Area from £275

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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SFO
5 Apr — 12 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to San Francisco Bay Area

Enter your travel dates to find the best prices.

Cheapest flights from London to San Francisco Bay Area
Explore the most affordable flight options available from London to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 March 2026.

Sat 18/407:25
LHR
-
SFO
1 stop15h 05m
United Airlines
Fri 24/419:30
SFO
-
LHR
Nonstop10h 40m
United Airlines
Deal found 2/3£373
Tue 28/418:35
LGW
-
SFO
1 stop29h 40m
SWISS
Sun 3/519:35
SFO
-
LGW
1 stop28h 45m
SWISS
Deal found 3/3£373
Sat 18/407:25
LHR
-
SFO
1 stop15h 05m
United Airlines
Sat 25/419:30
SFO
-
LHR
Nonstop10h 40m
United Airlines
Deal found 1/3£374
Thu 12/309:00
LHR
-
SFO
1 stop15h 30m
United Airlines
Sun 15/313:50
SFO
-
LHR
Nonstop10h 35m
United Airlines
Deal found 4/3£375
Wed 15/409:20
LGW
-
SFO
1 stop14h 55m
SWISS
Mon 20/419:35
SFO
-
LGW
1 stop14h 15m
SWISS
Deal found 1/3£375
Thu 12/309:00
LHR
-
SFO
1 stop15h 30m
United Airlines
Tue 17/313:50
SFO
-
LHR
1 stop14h 25m
United Airlines
Deal found 5/3£375
Tue 5/509:25
LGW
-
SFO
1 stop15h 00m
SWISS
Mon 11/519:35
SFO
-
LGW
1 stop14h 15m
SWISS
Deal found 2/3£375
Fri 13/309:00
LHR
-
SFO
1 stop15h 30m
United Airlines
Tue 24/322:45
SFO
-
LHR
2 stops15h 35m
United Airlines
Deal found 3/3£376
Fri 13/309:00
LHR
-
SFO
1 stop15h 30m
SWISS
Sun 29/319:35
SFO
-
LHR
1 stop14h 15m
SWISS
Deal found 3/3£377
Thu 16/409:25
LGW
-
SFO
1 stop14h 50m
SWISS
Wed 29/419:35
SFO
-
LGW
1 stop14h 20m
SWISS
Deal found 2/3£377
Wed 2/908:40
LHR
-
SFO
1 stop15h 35m
United Airlines
Mon 7/919:55
SFO
-
LHR
Nonstop10h 15m
United Airlines
Deal found 1/3£378
Tue 10/311:45
LHR
-
SFO
Nonstop11h 15m
British Airways
Tue 24/318:30
SFO
-
LHR
Nonstop10h 30m
British Airways
Deal found 3/3£378

Find flight deals from London to San Francisco Bay Area

Keep the following information in mind while searching for London to San Francisco Bay Area flight deals. Data was last updated 6 March 2026.

Round-trip from

£373

One-way from

£275

Popular in

July

Cheapest in

February

Average price

£468
United Airlines
  • United Airlines
  • 18/4-24/4
  • 1 total stop
  • 25h 45m total
  • London to San Francisco Bay Area
Search Deals
1/6
  • 1/6
  • 1 total stop
  • 35h 42m total
  • London to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£51 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to San Francisco Bay Area 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 6 March 2026.
Use the filters below to find and compare flights from London to San Francisco Bay Area that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 18/4

06:55-14:30

1 stop15h 35m

San Francisco

Sat 25/4

10:50-09:40

1 stop14h 50m

£373

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 31/5

08:45-16:15

1 stop15h 30m

San Francisco

Sun 7/6

06:15-12:20

1 stop22h 05m

£383
Fastest return journey

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 17/3

13:45-18:00

Nonstop11h 15m

San Francisco

Tue 24/3

13:50-07:25

Nonstop10h 35m

£386

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 9/6

07:25-14:20

1 stop14h 55m

San Francisco

Tue 23/6

05:00-07:40

1 stop18h 40m

£387

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 26/4

07:25-14:30

1 stop15h 05m

San Francisco

Sun 3/5

12:50-07:25

Nonstop10h 35m

£390

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 15/4

08:40-16:15

1 stop15h 35m

San Francisco

Thu 30/4

14:30-11:50

1 stop13h 20m

£393

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 24/3

20:05-17:30

1 stop28h 25m

San Francisco

Tue 31/3

14:30-19:20

2 stops20h 50m

£394

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 16/6

10:35-13:35

Nonstop11h 00m

San Francisco

Wed 24/6

06:15-09:40

1 stop19h 25m

£411

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 2/4

16:10-23:14

1 stop15h 04m

San Francisco

Sat 18/4

13:28-11:15

1 stop13h 47m

£413

LondonSan Jose

LHR - SJC

LHRSJC

London Heathrow

Thu 16/4

10:05-21:59

1 stop19h 54m

San Jose

Thu 23/4

06:00-14:25

1 stop24h 25m

£420

Flights are sorted by cheapest return flights first.

Deals found on 2/3

Showing 1-10 of 60 resultsSorted by cheapest first
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2
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6

Best time to book a flight from London to San Francisco Bay Area

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area 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 Bay Area

What is the cheapest month to book a flight from London to San Francisco Bay Area?

Currently, February is the cheapest month in which you can book a flight from London to San Francisco Bay Area (average of £349). Flying from London to San Francisco Bay Area in July is currently the most expensive (average of £443). 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 XIH?

Find hourly flight availability from London to San Francisco Bay Area. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 6 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 Bay Area as you normally would.

Reviews of airlines servicing San Francisco Bay Area

Get insights into the airlines that provide service to San Francisco Bay Area. 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 Bay Area. Reviews last updated 6 March 2026.
Read reviews from past customers who have flown with Austrian Airlines, Virgin Atlantic, andUnited Airlines from London to San Francisco Bay Area. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
900 reviews
Check prices

Comfort

7.3

Boarding

7.6

Crew

8.1

Food

6.8

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
Austrian Airlines
7.6
Good
900 reviews
Austrian Airlines
7.6
Good
900 reviews
Check prices

Comfort

7.3

Boarding

7.6

Crew

8.1

Food

6.8

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
Virgin Atlantic
7.5
Good
680 reviews
Austrian Airlines
7.6
Good
900 reviews
Check prices

Comfort

7.3

Boarding

7.6

Crew

8.1

Food

6.8

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
United Airlines
7.4
Good
9,403 reviews
Austrian Airlines
7.6
Good
900 reviews
Check prices

Comfort

7.3

Boarding

7.6

Crew

8.1

Food

6.8

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
Lufthansa
6.8
Okay
7,828 reviews
Austrian Airlines
7.6
Good
900 reviews
Check prices

Comfort

7.3

Boarding

7.6

Crew

8.1

Food

6.8

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
British Airways
6.7
Okay
7,778 reviews
Austrian Airlines
7.6
Good
900 reviews
Check prices

Comfort

7.3

Boarding

7.6

Crew

8.1

Food

6.8

Overall

7.6

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.

Related info for your journey

Find useful and relevant information for your journey from London to San Francisco Bay Area. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London to San Francisco Bay Area?

    There are many flights that can get you from London to San Francisco Bay Area in 15h 35m. Fly via United Airlines, British Airways, or SWISS to get the fastest option. There are 5350 mi between London and San Francisco Bay Area. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from London to San Francisco Bay Area one-way?

    The cheapet airlines for a one-way flight from London to San Francisco Bay Area are TAP AIR PORTUGAL (£272), WestJet (£302), and Scandinavian Airlines (£305).

  • What are the most popular routes from London to San Francisco Bay Area?

    While some choose either London Gatwick - San Francisco or London Stansted - San Francisco, London Heathrow - San Francisco is the most popular route from London to San Francisco Bay Area.

  • What are the most reliable airlines from London to San Francisco Bay Area?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to San Francisco Bay Area on time: KLM (84%), Air France (84%), Delta (84%).

  • What are the cheapest flights from London to San Francisco Bay Area?

    On average you can expect to pay £1,803 for a flight from London to San Francisco Bay Area. The cheapest flight overall is £378 while the most popular route, (London Heathrow - San Francisco) is currently priced at £217.

  • Can I find deals for flights from London to San Francisco Bay Area that include hotel bookings?

    Yes. In addition to deals on London to San Francisco Bay Area flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to San Francisco Bay Area?

    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 Bay Area.

  • Can I find deals for business class flights from London to San Francisco Bay Area?

    Yes. Cheapflights offers flight deals from London to San Francisco Bay Area 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 Bay Area?

    Currently, February is the cheapest month in which you can book a flight from London to San Francisco Bay Area (average of £349). Flying from London to San Francisco Bay Area in July is currently the most expensive (average of £443). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London to San Francisco Bay Area

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from London to San Francisco Bay Area

Discover the top 10 airlines that operate flights from London to San Francisco Bay Area. 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 6 March 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£323Average£577FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest£337Average£477FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£340Average£552FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£353Average£536FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
SWISSCheapest£353Average£453FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Scandinavian AirlinesCheapest£360Average£544FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£362Average£454FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
LufthansaCheapest£370Average£525FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Brussels AirlinesCheapest£372Average£487FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
FinnairCheapest£375Average£469FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to San Francisco Bay Area?

Cheapflights helps you search for flights from London to San Francisco Bay Area via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from London to San Francisco Bay Area?

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 Bay Area for you. Better yet — we are completely free to use.

Can Cheapflights find flights from London to San Francisco Bay Area with no change fees?

Need flexible booking options for your flight to San Francisco Bay Area from London? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from London to San Francisco Bay Area become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco Bay Area from London today and book when prices fit your budget.

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