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Cheap flights from the United Kingdom to San Francisco from £235

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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
22 Apr — 29 Apr1
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 17 April 2025.

Round-trip from

£349

One-way from

£235

Popular in

July

Cheapest in

February

Average price

£487

Good round-trip deal

£470 or less

Good one-way deal

£517 or less
United Airlines
  • United Airlines
  • 13/5-18/5
  • 3 total stops
  • 40h 03m total
  • United Kingdom to San Francisco
Search Deals
6/5
  • 6/5
  • 2 total stops
  • 47h 55m total
  • United Kingdom to San Francisco
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£88 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
Price to beat on a round-trip flight from United Kingdom to San Francisco.
Search Deals
Price to beat on a one-way flight from United Kingdom to San Francisco.
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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 17 April 2025.

Tue 13/511:25LHR - SFO
2 stops20h 42mUnited Airlines
Sun 18/508:29SFO - LHR
1 stop19h 21mUnited Airlines
Deal found 16/4£349
Thu 24/413:45LHR - SFO
1 stop34h 25mSWISS
Wed 7/519:30SFO - LHR
1 stop31h 55mSWISS
Deal found 16/4£393
Mon 12/515:30STN - SFO
2 stops31h 00mMultiple Airlines
Mon 19/516:30SFO - STN
2 stops18h 35mMultiple Airlines
Deal found 17/4£396
Wed 30/406:00LHR - SFO
1 stop18h 10mMultiple Airlines
Sat 10/512:55SFO - LHR
Nonstop10h 30mMultiple Airlines
Deal found 16/4£399
Thu 8/518:40LGW - SFO
1 stop29h 30mSWISS
Mon 12/519:30SFO - LGW
1 stop14h 20mSWISS
Deal found 16/4£399
Thu 4/907:25LHR - SFO
1 stop15h 05mLufthansa
Fri 19/913:05SFO - LHR
Nonstop10h 20mLufthansa
Deal found 15/4£401
Wed 7/510:55LGW - SFO
1 stop17h 32mMultiple Airlines
Sat 18/1017:15SFO - LGW
1 stop33h 40mMultiple Airlines
Deal found 17/4£403
Sun 27/417:10LHR - SFO
1 stop26h 35mVirgin Atlantic
Mon 5/521:20SFO - LHR
Nonstop10h 20mVirgin Atlantic
Deal found 16/4£409
Mon 15/910:20LHR - SFO
2 stops19h 37mFinnair
Fri 26/923:46SFO - LHR
2 stops23h 09mFinnair
Deal found 17/4£416
Mon 1/916:25LHR - SFO
Nonstop11h 05mKLM
Sat 20/916:05SFO - LHR
Nonstop10h 20mKLM
Deal found 16/4£420
Thu 1/516:25LHR - SFO
Nonstop11h 05mAir France
Mon 12/521:20SFO - LHR
Nonstop10h 20mAir France
Deal found 17/4£422
Wed 10/915:05LGW - SFO
1 stop16h 52mBritish Airways
Wed 17/907:20SFO - LGW
1 stop16h 50mBritish Airways
Deal found 17/4£423

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 17 April 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

Tue 13/5

11:25-00:07

2 stops20h 42m

San Francisco

Sun 18/5

08:29-11:50

1 stop19h 21m

£349

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 2/5

06:00-16:10

1 stop18h 10m

San Francisco

Tue 6/5

19:30-13:00

1 stop33h 30m

£393

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Mon 12/5

15:30-14:30

2 stops31h 00m

San Francisco

Mon 19/5

16:30-19:05

2 stops18h 35m

£396

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 1/9

20:05-16:35

1 stop28h 30m

San Francisco

Sat 20/9

16:05-10:25

Nonstop10h 20m

£397

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 1/5

08:40-19:55

2 stops19h 15m

San Francisco

Sun 11/5

08:15-06:30

1 stop14h 15m

£398

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Thu 8/5

18:40-16:10

1 stop29h 30m

San Francisco

Mon 12/5

19:30-17:50

1 stop14h 20m

£399

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 4/9

07:25-14:30

1 stop15h 05m

San Francisco

Fri 19/9

13:05-07:25

Nonstop10h 20m

£401

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 27/4

17:10-11:45

1 stop26h 35m

San Francisco

Mon 5/5

21:20-15:40

Nonstop10h 20m

£409

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 15/9

10:20-21:57

2 stops19h 37m

San Francisco

Fri 26/9

23:46-06:55

2 stops23h 09m

£416

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 3/9

13:45-14:30

1 stop32h 45m

San Francisco

Tue 9/9

18:45-22:00

2 stops19h 15m

£419

Flights are sorted by cheapest return flights first.

Deals found on 16/4

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 17 April 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 17 April 2025.

The most flights from GB0 to SFO are scheduled on a Monday (37 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (31 on average).

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

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 17 April 2025.
Read reviews from past customers who have flown ANA, Delta and Air New Zealand from United Kingdom to San Francisco. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.3
Very Good
844 reviews
Check prices

Boarding

8.5

Comfort

8.1

Food

7.6

Overall

8.3

Crew

8.7

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
ANA
8.3
Very Good
844 reviews
ANA
8.3
Very Good
844 reviews
Check prices

Boarding

8.5

Comfort

8.1

Food

7.6

Overall

8.3

Crew

8.7

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Delta
8.0
Very Good
7,917 reviews
ANA
8.3
Very Good
844 reviews
Check prices

Boarding

8.5

Comfort

8.1

Food

7.6

Overall

8.3

Crew

8.7

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Air New Zealand
8.0
Very Good
467 reviews
ANA
8.3
Very Good
844 reviews
Check prices

Boarding

8.5

Comfort

8.1

Food

7.6

Overall

8.3

Crew

8.7

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
EL AL
7.8
Good
524 reviews
ANA
8.3
Very Good
844 reviews
Check prices

Boarding

8.5

Comfort

8.1

Food

7.6

Overall

8.3

Crew

8.7

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
KLM
7.8
Good
1,329 reviews
ANA
8.3
Very Good
844 reviews
Check prices

Boarding

8.5

Comfort

8.1

Food

7.6

Overall

8.3

Crew

8.7

Entertainment

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.

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 £327. TAP AIR PORTUGAL flights start at £337 while deals on Aer Lingus start at £375 one-way.

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

    Most travelers choose London Heathrow - San Francisco, London Gatwick - San Francisco or London City - San Francisco when deciding on the best route 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 Canada (92%), Austrian Airlines (92%) and United Airlines (92%).

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

    On average you can expect to pay £1,523 for a flight from United Kingdom to San Francisco. The cheapest flight overall is £403 while the most popular route, (London Heathrow - San Francisco) is currently priced at £331.

  • 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
Los Banos
Vallejo
Newark
South San Francisco
Pacific Grove
Union City

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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.
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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 17 April 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£241Average£539FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest£282Average£577FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
TAP AIR PORTUGALCheapest£349Average£517FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesCheapest£358Average£542FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Virgin AtlanticCheapest£363Average£576FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
SWISSCheapest£366Average£586FlexibilityNo cancel feeOn-time79%
Search SWISS flights
British AirwaysCheapest£367Average£602FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Brussels AirlinesCheapest£374Average£502FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Austrian AirlinesCheapest£377Average£484FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
KLMCheapest£379Average£584FlexibilityNo cancel feeOn-time75%
Search KLM 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 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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