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Cheap flights from London to San Francisco Bay Area from £319

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SFO
12 Apr — 19 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 13 March 2026.

Wed 17/609:30
LHR
-
SFO
1 stop19h 32m
Air Canada
Fri 3/716:30
SFO
-
LHR
1 stop12h 50m
Air Canada
Deal found 10/3£383
Fri 10/708:00
LHR
-
SFO
1 stop17h 18m
United Airlines
Thu 16/705:05
SFO
-
LHR
1 stop17h 40m
United Airlines
Deal found 12/3£384
Wed 17/607:45
LHR
-
SFO
1 stop16h 33m
United Airlines
Sat 27/616:45
SFO
-
LHR
Nonstop10h 25m
United Airlines
Deal found 10/3£384
Tue 16/615:05
LHR
-
SFO
1 stop16h 01m
Air Canada
Thu 2/708:30
SFO
-
LHR
1 stop17h 05m
Air Canada
Deal found 10/3£386
Fri 19/609:30
LHR
-
SFO
1 stop19h 21m
Air Canada
Wed 1/713:25
SFO
-
LHR
1 stop14h 25m
Air Canada
Deal found 10/3£387
Fri 19/612:05
LHR
-
SFO
1 stop16h 57m
Air Canada
Mon 29/611:40
SFO
-
LHR
1 stop13h 55m
Air Canada
Deal found 10/3£390
Thu 19/309:00
LHR
-
SFO
1 stop15h 30m
SWISS
Sun 29/319:35
SFO
-
LHR
1 stop14h 15m
SWISS
Deal found 9/3£394
Wed 15/410:45
LHR
-
SFO
Nonstop11h 05m
British Airways
Tue 28/416:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 8/3£395
Mon 16/306:00
LHR
-
SFO
1 stop18h 30m
SWISS
Sun 29/319:35
SFO
-
LHR
1 stop36h 50m
SWISS
Deal found 9/3£396
Mon 16/306:00
LHR
-
SFO
1 stop18h 30m
Multiple Airlines
Sun 29/312:50
SFO
-
LHR
Nonstop10h 35m
Multiple Airlines
Deal found 8/3£397
Tue 17/309:30
LHR
-
SFO
1 stop14h 25m
Lufthansa
Tue 24/318:25
SFO
-
LHR
Nonstop10h 35m
Lufthansa
Deal found 8/3£398
Mon 23/308:45
LHR
-
SFO
1 stop18h 50m
Lufthansa
Tue 31/319:30
SFO
-
LHR
Nonstop10h 40m
Lufthansa
Deal found 10/3£399

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 13 March 2026.

Round-trip from

£383

One-way from

£319

Popular in

December

Cheapest in

February

Average price

£482
Air Canada
  • Air Canada
  • 17/6-28/6
  • 2 total stops
  • 30h 21m total
  • London to San Francisco Bay Area
Search Deals
United Airlines
  • United Airlines
  • 3/5
  • 1 total stop
  • 18h 07m total
  • London to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£22 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 13 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

Mon 23/3

07:40-20:35

1 stop19h 55m

San Francisco

Mon 30/3

19:30-14:10

Nonstop10h 40m

£415

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 16/4

08:45-16:15

1 stop15h 30m

San Francisco

Mon 20/4

21:15-20:40

1 stop15h 25m

£417

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 2/5

07:25-14:30

1 stop15h 05m

San Francisco

Sat 9/5

19:40-14:10

Nonstop10h 30m

£420
Fastest return journey

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 9/6

07:25-14:20

1 stop14h 55m

San Francisco

Tue 16/6

16:45-11:10

Nonstop10h 25m

£433

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 8/6

07:30-21:38

2 stops22h 08m

San Francisco

Mon 15/6

19:56-09:40

1 stop29h 44m

£438

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 7/9

07:25-19:00

1 stop19h 35m

San Francisco

Mon 14/9

13:05-07:25

Nonstop10h 20m

£442

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 9/6

06:15-16:10

1 stop17h 55m

San Francisco

Tue 16/6

17:40-15:00

1 stop13h 20m

£459

LondonSan Jose

LHR - SJC

LHRSJC

London Heathrow

Sat 2/5

10:05-22:59

1 stop20h 54m

San Jose

Tue 5/5

12:46-15:05

1 stop18h 19m

£465

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Mon 20/4

14:25-14:40

2 stops32h 15m

San Francisco

Sun 26/4

16:45-21:40

3 stops20h 55m

£482

LondonSan Jose

LHR - SJC

LHRSJC

London Heathrow

Sat 25/4

10:05-22:59

1 stop20h 54m

San Jose

Sat 2/5

10:57-08:35

1 stop13h 38m

£487

Flights are sorted by cheapest return flights first.

Deals found on 7/3

Showing 1-10 of 60 resultsSorted by cheapest first
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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 £355). Flying from London to San Francisco Bay Area in July is currently the most expensive (average of £438). 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 13 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.

Weekly flight availability from London to San Francisco Bay Area

Explore weekly flight availability from London to San Francisco Bay Area. 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 13 March 2026.

The most flights from LON to zzXIH are scheduled on a Wednesday (31 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (25 on average).

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 13 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
901 reviews
Check prices

Comfort

7.3

Entertainment

6.8

Crew

8.1

Boarding

7.6

Food

6.8

Overall

7.6

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
901 reviews
Austrian Airlines
7.6
Good
901 reviews
Check prices

Comfort

7.3

Entertainment

6.8

Crew

8.1

Boarding

7.6

Food

6.8

Overall

7.6

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
901 reviews
Check prices

Comfort

7.3

Entertainment

6.8

Crew

8.1

Boarding

7.6

Food

6.8

Overall

7.6

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
9,419 reviews
Austrian Airlines
7.6
Good
901 reviews
Check prices

Comfort

7.3

Entertainment

6.8

Crew

8.1

Boarding

7.6

Food

6.8

Overall

7.6

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
7,848 reviews
Austrian Airlines
7.6
Good
901 reviews
Check prices

Comfort

7.3

Entertainment

6.8

Crew

8.1

Boarding

7.6

Food

6.8

Overall

7.6

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
7,784 reviews
Austrian Airlines
7.6
Good
901 reviews
Check prices

Comfort

7.3

Entertainment

6.8

Crew

8.1

Boarding

7.6

Food

6.8

Overall

7.6

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 19h 55m. Fly via United Airlines, British Airways, or Delta 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 (£271), WestJet (£302), and Scandinavian Airlines (£304).

  • 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 £1,790 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 £347.

  • 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 £355). Flying from London to San Francisco Bay Area in July is currently the most expensive (average of £438). 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 13 March 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£322Average£576FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest£339Average£550FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£352Average£509FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
SWISSCheapest£353Average£452FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Scandinavian AirlinesCheapest£360Average£559FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£361Average£458FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Air CanadaCheapest£361Average£476FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapest£369Average£521FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Brussels AirlinesCheapest£374Average£488FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
FinnairCheapest£375Average£476FlexibilityNo 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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