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Cheap flights from the United Kingdom to San Francisco from £267

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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
13 Jul — 20 Jul1
1 adult

Cheap flight deals from United Kingdom to San Francisco

Keep the following information in mind while searching for United Kingdom to San Francisco flight deals. Data was last updated 8 July 2025.

Round-trip from

£393

One-way from

£267

Popular in

July

Cheapest in

February

Average price

£660

Good round-trip deal

£480 or less

Good one-way deal

£564 or less
Lufthansa
  • Lufthansa
  • 23/8-9/9
  • 2 total stops
  • 31h 10m total
  • United Kingdom to San Francisco
4/10
  • 4/10
  • 2 total stops
  • 22h 59m total
  • United Kingdom to San Francisco
Highest demand for flights based on searches. 17% potential increase in price (£80 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£12 potential savings vs. average return price).
Average for round-trip flights in July 2025
Price to beat on a round-trip flight from United Kingdom to San Francisco.
Price to beat on a one-way flight from United Kingdom to San Francisco.

Find flight deals from United Kingdom to San Francisco

Cheapest flights from United Kingdom to San Francisco
Explore the most affordable flight options available from United Kingdom to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 July 2025.

Sat 23/806:30LHR - SFO
1 stop14h 10mLufthansa
Tue 9/914:40SFO - LHR
1 stop17h 00mLufthansa
Deal found 6/7£393
Wed 17/918:35LGW - SFO
1 stop29h 35mSWISS
Sun 21/919:30SFO - LGW
1 stop14h 20mSWISS
Deal found 7/7£393
Fri 5/908:40LHR - SFO
1 stop15h 30mMultiple Airlines
Sat 20/916:05SFO - LHR
Nonstop10h 20mMultiple Airlines
Deal found 7/7£394
Mon 15/906:30LHR - SFO
2 stops16h 58mUnited Airlines
Fri 26/913:02SFO - LHR
1 stop13h 38mUnited Airlines
Deal found 7/7£394
Thu 21/820:05LHR - SFO
1 stop28h 05mSWISS
Sat 13/919:30SFO - LHR
1 stop18h 15mSWISS
Deal found 7/7£396
Sat 27/914:15LHR - SFO
Nonstop11h 10mBritish Airways
Mon 29/915:59SFO - LHR
1 stop12h 51mBritish Airways
Deal found 7/7£397
Mon 15/915:05LGW - SFO
1 stop37h 27mBritish Airways
Thu 9/1010:12SFO - LGW
1 stop13h 58mBritish Airways
Deal found 5/7£397
Thu 11/909:25LCY - SFO
1 stop14h 45mSWISS
Thu 18/919:30SFO - LCY
1 stop15h 25mSWISS
Deal found 7/7£399
Sat 6/914:05LHR - SFO
1 stop14h 31mAir Canada
Sat 20/916:35SFO - LHR
2 stops53h 55mAir Canada
Deal found 7/7£405
Thu 28/810:45LGW - SFO
1 stop21h 14mMultiple Airlines
Wed 10/905:50SFO - LGW
1 stop21h 05mMultiple Airlines
Deal found 4/7£405
Thu 18/908:45LCY - SFO
1 stop15h 15mMultiple Airlines
Tue 23/919:30SFO - LCY
1 stop33h 00mMultiple Airlines
Deal found 6/7£409
Sun 24/810:35LGW - SFO
1 stop35h 55mTAP AIR PORTUGAL
Tue 9/918:45SFO - LGW
2 stops31h 00mTAP AIR PORTUGAL
Deal found 7/7£410

Cheapflights Fare Finder

Customise your flight search to find flights from United Kingdom 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 8 July 2025.
Use the filters below to find and compare flights from the United Kingdom to San Francisco that are best for you.

Fly from

United Kingdom

Fly to

San Francisco

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 23/8

06:30-12:40

1 stop14h 10m

San Francisco

Tue 9/9

14:40-15:40

1 stop17h 00m

£393

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Wed 17/9

18:35-16:10

1 stop29h 35m

San Francisco

Sun 21/9

19:30-17:50

1 stop14h 20m

£393

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 5/9

08:40-16:10

1 stop15h 30m

San Francisco

Sat 20/9

13:10-10:40

1 stop13h 30m

£394

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 30/8

08:45-16:10

1 stop15h 25m

San Francisco

Thu 11/9

19:55-14:10

Nonstop10h 15m

£395

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 21/8

20:05-16:10

1 stop28h 05m

San Francisco

Sat 13/9

19:30-21:45

1 stop18h 15m

£396

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Mon 15/9

15:05-20:32

1 stop37h 27m

San Francisco

Thu 9/10

10:12-08:10

1 stop13h 58m

£397

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Thu 11/9

09:25-16:10

1 stop14h 45m

San Francisco

Thu 18/9

19:30-18:55

1 stop15h 25m

£399

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 27/9

16:55-23:16

1 stop14h 21m

San Francisco

Mon 6/10

19:20-13:45

Nonstop10h 25m

£402

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 6/9

14:05-20:36

1 stop14h 31m

San Francisco

Sat 20/9

16:35-06:30

2 stops53h 55m

£405

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Thu 28/8

10:45-23:59

1 stop21h 14m

San Francisco

Wed 10/9

05:50-10:55

1 stop21h 05m

£405

Flights are sorted by cheapest return flights first.

Deals found on 7/7

Showing 1-10 of 60 results
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Best time to book a flight from United Kingdom to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from United Kingdom 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 the United Kingdom to San Francisco

What is the cheapest month to book a flight from United Kingdom to San Francisco?

Currently, February is the cheapest month in which you can book a flight from United Kingdom to San Francisco (average of £538). Flying from United Kingdom to San Francisco in July is currently the most expensive (average of £803). 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 GB to SFO?

Find hourly flight availability from United Kingdom 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 8 July 2025.

When flying from United Kingdom to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from United Kingdom to San Francisco

Explore weekly flight availability from United Kingdom 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 8 July 2025.

The most flights from GB0 to SFO are scheduled on a Monday (42 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (42 on average).

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 8 July 2025.
Read reviews from past customers who have flown with Delta, KLM, andAustrian Airlines from the United Kingdom 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.

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very Good

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from United Kingdom 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 United Kingdom?

    If you book a flight to San Francisco from United Kingdom, you will be flying to San Francisco, which is the city’s only airport. San Francisco (SFO) is located 11.8 mi from the center of San Francisco.

  • What are the cheapest airlines to fly from United Kingdom to San Francisco one-way?

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at £381. Aer Lingus flights start at £381 while deals on JetBlue start at £386 one-way.

  • What are the most popular routes from United Kingdom to San Francisco?

  • What are the most reliable airlines from United Kingdom to San Francisco?

    The top 3 most reliable airlines when flying from United Kingdom to San Francisco are Air New Zealand (87%), Air Canada (87%) and Austrian Airlines (87%).

  • What are the cheapest flights from United Kingdom to San Francisco?

    On average you can expect to pay £1,966 for a flight from United Kingdom to San Francisco. The cheapest flight overall is £381 while the most popular route, (London Heathrow - San Francisco) is currently priced at £243.

  • Can I find deals for flights from United Kingdom to San Francisco that include hotel bookings?

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

  • How can I find direct flights from United Kingdom to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to San Francisco.

  • Can I find deals for business class flights from United Kingdom to San Francisco?

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to San Francisco?

    Currently, February is the cheapest month in which you can book a flight from United Kingdom to San Francisco (average of £538). Flying from United Kingdom to San Francisco in July is currently the most expensive (average of £803). 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

Travelling to a place near the United Kingdom?

Book flights to the United Kingdom if you plan to visit one of these locations
Santa Cruz
Vallejo
Newark
South San Francisco
Bodega Bay
Pacific Grove
Union City

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for United Kingdom to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from United Kingdom to San Francisco

Discover the top 10 airlines that operate flights from United Kingdom 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 8 July 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£234Average£551FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
TAP AIR PORTUGALCheapest£342Average£522FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
SWISSCheapest£346Average£519FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Scandinavian AirlinesCheapest£347Average£533FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
United AirlinesCheapest£353Average£568FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£356Average£540FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£359Average£564FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Brussels AirlinesCheapest£360Average£479FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
KLMCheapest£363Average£571FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£365Average£499FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

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How does Cheapflights help users find flights from United Kingdom to San Francisco?

Cheapflights makes it easy to find United Kingdom to San Francisco flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to San Francisco?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from United Kingdom to San Francisco.

Can Cheapflights find flights from United Kingdom to San Francisco with no change fees?

Yes, we can. To see specific flights from United Kingdom to San Francisco with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from United Kingdom 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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