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Cheap flights from the United Kingdom to San Francisco from £284

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
7 Aug — 14 Aug1
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 8 July 2026.

Wed 22/708:00
LHR
-
SFO
1 stop18h 49m
United Airlines
Wed 21/1008:55
SFO
-
LHR
1 stop17h 15m
United Airlines
Deal found 7/7£453
Fri 21/808:30
LHR
-
SFO
1 stop14h 45m
Lufthansa
Sun 6/908:10
SFO
-
LHR
1 stop14h 45m
Lufthansa
Deal found 3/7£455
Wed 23/921:30
STN
-
SFO
2 stops28h 30m
Multiple Airlines
Tue 29/915:05
SFO
-
STN
2 stops21h 55m
Multiple Airlines
Deal found 4/7£456
Thu 27/806:55
LHR
-
SFO
1 stop20h 05m
Lufthansa
Tue 8/916:45
SFO
-
LHR
Nonstop10h 25m
Lufthansa
Deal found 3/7£460
Thu 27/806:55
LHR
-
SFO
1 stop15h 25m
Lufthansa
Sun 6/919:50
SFO
-
LHR
Nonstop10h 20m
Lufthansa
Deal found 4/7£460
Wed 23/911:30
LHR
-
SFO
1 stop16h 20m
Lufthansa
Tue 29/912:55
SFO
-
LHR
Nonstop10h 30m
Lufthansa
Deal found 4/7£461
Thu 27/820:35
LGW
-
SFO
2 stops25h 55m
Multiple Airlines
Wed 9/916:30
SFO
-
LGW
2 stops18h 40m
Multiple Airlines
Deal found 3/7£462
Thu 27/806:55
LHR
-
SFO
1 stop15h 25m
Lufthansa
Mon 7/921:05
SFO
-
LHR
1 stop17h 35m
Lufthansa
Deal found 3/7£463
Fri 11/909:00
LHR
-
SFO
1 stop18h 00m
Lufthansa
Sun 20/919:25
SFO
-
LHR
1 stop14h 15m
Lufthansa
Deal found 3/7£464
Sun 23/820:05
STN
-
SFO
2 stops26h 25m
Multiple Airlines
Sun 6/916:30
SFO
-
STN
2 stops24h 15m
Multiple Airlines
Deal found 3/7£464
Sun 23/808:30
LHR
-
SFO
1 stop14h 45m
Lufthansa
Sun 6/919:20
SFO
-
LHR
1 stop17h 20m
Lufthansa
Deal found 3/7£465
Tue 10/1120:25
LHR
-
SFO
1 stop23h 20m
Virgin Atlantic
Tue 24/1106:00
SFO
-
LHR
1 stop20h 00m
Virgin Atlantic
Deal found 6/7£466

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 8 July 2026.

Round-trip from

£453

One-way from

£284

Popular in

December

Cheapest in

February

Average price

£615

Good round-trip deal

£502 or less

Good one-way deal

£596 or less
United Airlines
  • United Airlines
  • 22/7-21/10
  • 2 total stops
  • 36h 04m total
  • United Kingdom to San Francisco
Search Deals
15/9
  • 15/9
  • 3 total stops
  • 45h 15m total
  • United Kingdom to San Francisco
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£6 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 8 July 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

LTN - SFO

LTNSFO

London Luton

Sun 30/8

13:05-14:40

2 stops33h 35m

San Francisco

Sun 6/9

16:45-21:40

3 stops20h 55m

£505

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 25/8

08:45-16:35

1 stop15h 50m

San Francisco

Mon 14/9

19:45-14:10

Nonstop10h 25m

£505

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 6/11

09:00-16:30

1 stop15h 30m

San Francisco

Tue 10/11

12:50-07:25

Nonstop10h 35m

£506

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Thu 27/8

18:05-14:30

2 stops28h 25m

San Francisco

Wed 9/9

16:30-22:10

2 stops21h 40m

£511

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Tue 6/10

13:40-14:35

2 stops32h 55m

San Francisco

Tue 13/10

16:20-23:45

2 stops23h 25m

£520

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 28/10

15:10-23:29

1 stop15h 19m

San Francisco

Sat 7/11

14:06-12:00

1 stop13h 54m

£521

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 4/1

11:45-14:55

Nonstop11h 10m

San Francisco

Mon 11/1

10:29-08:10

1 stop13h 41m

£524

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 26/8

20:05-16:15

1 stop28h 10m

San Francisco

Sun 13/9

19:35-21:30

2 stops17h 55m

£531

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 6/10

20:05-16:35

1 stop28h 30m

San Francisco

Tue 13/10

14:25-16:35

2 stops18h 10m

£531

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Thu 27/8

09:25-16:15

1 stop14h 50m

San Francisco

Tue 8/9

14:40-17:50

2 stops19h 10m

£533

Flights are sorted by cheapest return flights first.

Deals found on 7/7

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 £409). Flying from United Kingdom to San Francisco in June is currently the most expensive (average of £654). 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 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 8 July 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 (37 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 143 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?

Friday 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 10% of flights being delayed.

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

Booking 22 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 8 July 2026.
Read reviews from past customers who have flown with Virgin Atlantic,United Airlines, 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.
Virgin Atlantic
7.5
Good
691 reviews
Check prices

Food

6.9

Boarding

7.7

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Virgin Atlantic
7.5
Good
691 reviews
Virgin Atlantic
7.5
Good
691 reviews
Check prices

Food

6.9

Boarding

7.7

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
United Airlines
7.4
Good
9,945 reviews
Virgin Atlantic
7.5
Good
691 reviews
Check prices

Food

6.9

Boarding

7.7

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Aer Lingus
7.3
Good
1,648 reviews
Virgin Atlantic
7.5
Good
691 reviews
Check prices

Food

6.9

Boarding

7.7

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Lufthansa
6.8
Okay
8,124 reviews
Virgin Atlantic
7.5
Good
691 reviews
Check prices

Food

6.9

Boarding

7.7

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
British Airways
6.7
Okay
8,103 reviews
Virgin Atlantic
7.5
Good
691 reviews
Check prices

Food

6.9

Boarding

7.7

Comfort

7.3

Entertainment

7.5

Overall

7.5

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

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 15h 19m. United Airlines provides one of the quickest options available for as low as £521. 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 £210. Virgin Atlantic flights start at £244 while deals on JetBlue start at £245 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 (83%), Austrian Airlines (83%) and United Airlines (83%).

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

    On average you can expect to pay £1,683 for a flight from United Kingdom to San Francisco. The cheapest flight overall is £344 while the most popular route, (London Heathrow - San Francisco) is currently priced at £387.

  • 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 £409). Flying from United Kingdom to San Francisco in June is currently the most expensive (average of £654). 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
San Bruno
Newark
Bodega Bay
South San Francisco
Sunnyvale

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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 8 July 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£171Average£575FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Virgin AtlanticCheapest£184Average£612FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
DeltaCheapest£322Average£676FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SWISSCheapest£351Average£591FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Aer LingusCheapest£355Average£696FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Scandinavian AirlinesCheapest£361Average£510FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£361Average£472FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Brussels AirlinesCheapest£373Average£534FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Austrian AirlinesCheapest£376Average£501FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Air CanadaCheapest£379Average£642FlexibilityNo cancel feeOn-time67%
Search Air Canada 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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