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Cheap flights from the United Kingdom to San Francisco from £228

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 25/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
20 Jul — 27 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 15 July 2025.

Round-trip from

£380

One-way from

£228

Popular in

July

Cheapest in

February

Average price

£667

Good round-trip deal

£499 or less

Good one-way deal

£589 or less
British Airways
  • British Airways
  • 27/8-10/9
  • 2 total stops
  • 36h 55m total
  • United Kingdom to San Francisco
25/9
  • 25/9
  • 2 total stops
  • 59h 07m total
  • United Kingdom to San Francisco
Highest demand for flights based on searches. 17% potential increase in price (£78 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 15 July 2025.

Wed 27/805:50GLA - SFO
1 stop19h 35mBritish Airways
Wed 10/916:30SFO - GLA
1 stop17h 20mBritish Airways
Deal found 14/7£380
Tue 4/1108:55LHR - SFO
2 stops19h 55mMultiple Airlines
Sun 9/1108:38SFO - LHR
1 stop17h 32mMultiple Airlines
Deal found 13/7£399
Sun 7/918:40LGW - SFO
1 stop29h 30mSWISS
Sun 14/919:30SFO - LGW
1 stop14h 20mSWISS
Deal found 14/7£399
Sun 24/806:30LHR - SFO
1 stop21h 20mUnited Airlines
Tue 9/913:05SFO - LHR
Nonstop10h 20mUnited Airlines
Deal found 14/7£400
Mon 13/1016:25LGW - SFO
1 stop29h 10mTAP AIR PORTUGAL
Sat 25/1019:35SFO - LGW
2 stops18h 05mTAP AIR PORTUGAL
Deal found 14/7£400
Wed 10/914:15LHR - SFO
Nonstop11h 10mBritish Airways
Thu 18/916:30SFO - LHR
Nonstop10h 25mBritish Airways
Deal found 13/7£401
Tue 16/908:45LHR - SFO
2 stops18h 53mAir Canada
Sat 27/908:40SFO - LHR
2 stops16h 55mAir Canada
Deal found 14/7£403
Fri 19/911:35LGW - SFO
2 stops20h 24mBritish Airways
Fri 26/910:22SFO - LGW
1 stop13h 48mBritish Airways
Deal found 13/7£403
Mon 24/1109:15LCY - SFO
1 stop15h 10mSWISS
Sat 6/1219:25SFO - LCY
1 stop33h 25mSWISS
Deal found 13/7£403
Sun 7/1219:25LHR - SFO
2 stops32h 19mAustrian Airlines
Sat 31/108:25SFO - LHR
1 stop18h 25mAustrian Airlines
Deal found 14/7£404
Sat 6/916:15LHR - SFO
Nonstop11h 00mBrussels Airlines
Sat 20/916:05SFO - LHR
Nonstop10h 20mBrussels Airlines
Deal found 13/7£406
Sun 24/816:25LHR - SFO
Nonstop11h 05mVirgin Atlantic
Tue 9/921:20SFO - LHR
Nonstop10h 20mVirgin Atlantic
Deal found 14/7£409

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 15 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

GlasgowSan Francisco

GLA - SFO

GLASFO

Glasgow Intl

Wed 27/8

05:50-17:25

1 stop19h 35m

San Francisco

Wed 10/9

16:30-17:50

1 stop17h 20m

£380

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 4/11

08:55-20:50

2 stops19h 55m

San Francisco

Sun 9/11

08:38-10:10

1 stop17h 32m

£399

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Sun 7/9

18:40-16:10

1 stop29h 30m

San Francisco

Sun 14/9

19:30-17:50

1 stop14h 20m

£399

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 24/8

06:30-19:50

1 stop21h 20m

San Francisco

Tue 9/9

13:05-07:25

Nonstop10h 20m

£400

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Mon 13/10

16:25-13:35

1 stop29h 10m

San Francisco

Sat 25/10

19:35-20:40

2 stops18h 05m

£400

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 10/9

14:15-17:25

Nonstop11h 10m

San Francisco

Thu 18/9

16:30-10:55

Nonstop10h 25m

£401

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 16/9

08:45-19:38

2 stops18h 53m

San Francisco

Sat 27/9

08:40-09:35

2 stops16h 55m

£403

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Fri 19/9

11:35-23:59

2 stops20h 24m

San Francisco

Fri 26/9

10:22-08:10

1 stop13h 48m

£403

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Mon 6/10

08:10-16:10

1 stop16h 00m

San Francisco

Sat 18/10

19:30-18:45

1 stop15h 15m

£403

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 7/12

19:25-19:44

2 stops32h 19m

San Francisco

Sat 31/1

08:25-05:55

2 stops37h 30m

£404

Flights are sorted by cheapest return flights first.

Deals found on 13/7

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 15 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 15 July 2025.

The most flights from GB0 to SFO are scheduled on a Monday (43 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (43 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 15 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.

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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 Aer Lingus, which is currently one of the cheapest options available, starting at £396. JetBlue flights start at £400 while deals on Iberia start at £403 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 £1,937 for a flight from United Kingdom to San Francisco. The cheapest flight overall is £400 while the most popular route, (London Heathrow - San Francisco) is currently priced at £350.

  • 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 San Francisco?

Book flights to San Francisco 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 15 July 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£237Average£563FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
TAP AIR PORTUGALCheapest£348Average£528FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesCheapest£349Average£539FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
SWISSCheapest£351Average£522FlexibilityNo cancel feeOn-time79%
Search SWISS flights
United AirlinesCheapest£358Average£571FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£361Average£549FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Brussels AirlinesCheapest£362Average£485FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
British AirwaysCheapest£364Average£574FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£369Average£505FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£371Average£572FlexibilityNo cancel feeOn-time75%
Search KLM 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.

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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.

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