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Cheap flights from the United Kingdom to San Francisco from £286

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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
19 Jun — 26 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to San Francisco

Enter your travel dates to find the best prices.

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 20 May 2026.

Sat 5/912:45
LHR
-
SFO
Nonstop11h 00m
Delta
Sat 12/909:00
SFO
-
LHR
1 stop15h 50m
Delta
Deal found 17/5£497
Wed 2/908:40
LHR
-
SFO
2 stops19h 39m
Delta
Mon 7/906:00
SFO
-
LHR
1 stop16h 25m
Delta
Deal found 16/5£498
Wed 2/917:00
LGW
-
SFO
1 stop27h 50m
Virgin Atlantic
Wed 9/913:00
SFO
-
LGW
2 stops19h 00m
Virgin Atlantic
Deal found 17/5£498
Thu 30/716:20
LHR
-
SFO
1 stop16h 33m
Multiple Airlines
Wed 12/817:55
SFO
-
LHR
Nonstop10h 20m
Multiple Airlines
Deal found 17/5£498
Wed 2/907:30
LHR
-
SFO
1 stop15h 45m
Lufthansa
Wed 16/912:24
SFO
-
LHR
1 stop15h 11m
Lufthansa
Deal found 18/5£499
Wed 2/909:55
LHR
-
SFO
1 stop33h 50m
Virgin Atlantic
Sat 19/923:15
SFO
-
LHR
Nonstop10h 15m
Virgin Atlantic
Deal found 15/5£501
Wed 2/910:45
LHR
-
SFO
Nonstop11h 05m
Finnair
Wed 16/916:35
SFO
-
LHR
Nonstop10h 25m
Finnair
Deal found 15/5£501
Mon 17/820:15
LCY
-
SFO
1 stop23h 30m
Virgin Atlantic
Mon 24/813:45
SFO
-
LCY
1 stop19h 35m
Virgin Atlantic
Deal found 16/5£501
Wed 29/706:45
LHR
-
SFO
2 stops26h 14m
British Airways
Wed 12/816:35
SFO
-
LHR
Nonstop10h 25m
British Airways
Deal found 17/5£502
Sat 5/918:30
LHR
-
SFO
Nonstop10h 55m
KLM
Sat 12/917:55
SFO
-
LHR
Nonstop10h 20m
KLM
Deal found 17/5£503
Fri 21/806:30
LHR
-
SFO
1 stop13h 15m
Virgin Atlantic
Mon 14/910:00
SFO
-
LHR
1 stop16h 00m
Virgin Atlantic
Deal found 16/5£504
Tue 22/909:25
LGW
-
SFO
1 stop14h 50m
SWISS
Tue 29/919:35
SFO
-
LGW
1 stop14h 15m
SWISS
Deal found 18/5£504

Find 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 20 May 2026.

Round-trip from

£497

One-way from

£286

Popular in

December

Cheapest in

February

Average price

£539

Good round-trip deal

£584 or less

Good one-way deal

£543 or less
Delta
  • Delta
  • 5/9-12/9
  • 1 total stop
  • 26h 50m total
  • United Kingdom to San Francisco
Search Deals
10/6
  • 10/6
  • 1 total stop
  • 27h 05m total
  • United Kingdom to San Francisco
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£10 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
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.
Search Deals

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 20 May 2026.
Use the filters below to find and compare flights from the United Kingdom to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 5/9

12:45-15:45

Nonstop11h 00m

San Francisco

Sat 12/9

12:20-10:40

1 stop14h 20m

£498

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 27/8

06:30-11:45

1 stop13h 15m

San Francisco

Sun 6/9

15:00-13:05

1 stop14h 05m

£510

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 16/11

09:30-15:55

1 stop14h 25m

San Francisco

Mon 23/11

12:50-07:25

Nonstop10h 35m

£512

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 22/8

06:15-12:50

1 stop14h 35m

San Francisco

Thu 17/9

17:55-12:15

Nonstop10h 20m

£515
Fastest return journey

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 16/11

11:40-14:40

Nonstop11h 00m

San Francisco

Wed 6/1

16:45-10:55

Nonstop10h 10m

£545

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Wed 15/7

10:00-23:52

2 stops21h 52m

San Francisco

Thu 23/7

13:45-19:45

1 stop22h 00m

£546

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Wed 9/9

16:25-14:30

1 stop30h 05m

San Francisco

Tue 15/9

19:20-09:45

2 stops30h 25m

£549

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Wed 7/10

20:15-11:45

1 stop23h 30m

San Francisco

Mon 12/10

06:00-07:55

2 stops17h 55m

£549

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 2/6

06:30-11:45

1 stop13h 15m

San Francisco

Tue 9/6

12:20-10:40

1 stop14h 20m

£571

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Tue 9/6

09:40-15:55

1 stop14h 15m

San Francisco

Wed 24/6

17:40-15:25

1 stop13h 45m

£579

Flights are sorted by cheapest return flights first.

Deals found on 16/5

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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 £480). Flying from United Kingdom to San Francisco in December is currently the most expensive (average of £639). 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 20 May 2026.

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 20 May 2026.

The most flights from GB0 to SFO are scheduled on a Monday (42 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (17 on average).

How often are flights from the United Kingdom to San Francisco delayed?

About 12% of weekly flights between United Kingdom and San Francisco have experienced delays in the past year, with the average delay time being 144 minutes.

What is the most punctual flight time for the United Kingdom to San Francisco flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United Kingdom to San Francisco flights?

Over the past year, United Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.

How far ahead should I book a flight from United Kingdom to San Francisco?

Booking 80 days in advance of your planned departure date is, on average, the best time to get cheap flights from United Kingdom to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 20 May 2026.
Read reviews from past customers who have flown with United Airlines,Virgin Atlantic, andAer Lingus 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.
United Airlines
7.4
Good
9,737 reviews
Check prices

Crew

8.1

Food

6.6

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,737 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Crew

8.1

Food

6.6

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Virgin Atlantic
7.4
Good
688 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Crew

8.1

Food

6.6

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Aer Lingus
7.3
Good
1,571 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Crew

8.1

Food

6.6

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Lufthansa
6.8
Okay
8,015 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Crew

8.1

Food

6.6

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
British Airways
6.7
Okay
7,989 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Crew

8.1

Food

6.6

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

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 11.0 mi from the center of San Francisco.

  • How long is the flight from United Kingdom to San Francisco?

    A quick flight from United Kingdom to San Francisco can take about 11h. Delta provides one of the quickest options available for as low as £498. Airlines will cover a distance of 5350 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at £209. JetBlue flights start at £244 while deals on TAP AIR PORTUGAL start at £270 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 Stansted - 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 (88%), Austrian Airlines (88%) and United Airlines (88%).

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

    On average you can expect to pay £1,217 for a flight from United Kingdom to San Francisco. The cheapest flight overall is £449 while the most popular route, (London Heathrow - San Francisco) is currently priced at £448.

  • 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 £480). Flying from United Kingdom to San Francisco in December is currently the most expensive (average of £639). 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
Newark
San Bruno
Bodega Bay
South San Francisco
Sunnyvale

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.
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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 20 May 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£171Average£556FlexibilityNo cancel feeOn-time77%
Search Iberia flights
DeltaCheapest£321Average£684FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest£336Average£585FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£344Average£611FlexibilityNo cancel feeOn-time70%
Search British Airways flights
SWISSCheapest£352Average£575FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Aer LingusCheapest£353Average£700FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Scandinavian AirlinesCheapest£355Average£498FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£360Average£469FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
FinnairCheapest£364Average£510FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Brussels AirlinesCheapest£372Average£511FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines 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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