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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
6 Aug — 13 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 7 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£454
Fri 21/808:30
LHR
-
SFO
1 stop14h 45m
Lufthansa
Sun 6/908:10
SFO
-
LHR
1 stop14h 45m
Lufthansa
Deal found 3/7£456
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£457
Thu 27/809:30
LHR
-
SFO
1 stop18h 15m
Lufthansa
Sat 5/916:50
SFO
-
LHR
Nonstop10h 20m
Lufthansa
Deal found 2/7£459
Thu 27/806:55
LHR
-
SFO
1 stop20h 05m
Lufthansa
Tue 8/916:45
SFO
-
LHR
Nonstop10h 25m
Lufthansa
Deal found 3/7£460
Tue 8/915:15
LTN
-
SFO
2 stops31h 25m
Multiple Airlines
Tue 22/916:45
SFO
-
LTN
2 stops19h 10m
Multiple Airlines
Deal found 2/7£461
Thu 27/806:55
LHR
-
SFO
1 stop15h 25m
Lufthansa
Sun 6/919:50
SFO
-
LHR
Nonstop10h 20m
Lufthansa
Deal found 4/7£461
Wed 23/908:30
LHR
-
SFO
1 stop19h 20m
Lufthansa
Thu 8/1016:45
SFO
-
LHR
Nonstop10h 25m
Lufthansa
Deal found 3/7£462
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£463
Thu 27/806:55
LHR
-
SFO
1 stop15h 25m
Lufthansa
Mon 7/921:05
SFO
-
LHR
1 stop17h 35m
Lufthansa
Deal found 3/7£464
Fri 11/909:00
LHR
-
SFO
1 stop18h 00m
Lufthansa
Sun 20/919:25
SFO
-
LHR
1 stop14h 15m
Lufthansa
Deal found 3/7£465
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£465

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 7 July 2026.

Round-trip from

£454

One-way from

£284

Popular in

December

Cheapest in

February

Average price

£616

Good round-trip deal

£503 or less

Good one-way deal

£597 or less
United Airlines
  • United Airlines
  • 20/7-19/10
  • 2 total stops
  • 34h 02m 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 7 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

LHR - SFO

LHRSFO

London Heathrow

Fri 18/9

07:30-15:20

1 stop15h 50m

San Francisco

Wed 14/10

12:15-13:20

1 stop17h 05m

£511

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 4/9

08:55-18:00

1 stop17h 05m

San Francisco

Mon 7/9

09:30-10:15

1 stop16h 45m

£531

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
Fastest return journey

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 27/8

10:35-13:35

Nonstop11h 00m

San Francisco

Wed 9/9

19:45-14:10

Nonstop10h 25m

£534

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 27/8

16:15-19:10

Nonstop10h 55m

San Francisco

Thu 3/9

13:15-10:40

1 stop13h 25m

£537

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 2/11

19:50-14:50

2 stops27h 00m

San Francisco

Mon 16/11

16:45-18:50

2 stops18h 05m

£543

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Thu 27/8

19:55-14:30

2 stops26h 35m

San Francisco

Sun 6/9

16:30-19:15

2 stops18h 45m

£549

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Fri 21/8

20:50-14:30

2 stops25h 40m

San Francisco

Sun 6/9

16:30-20:10

2 stops19h 40m

£553

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 7/9

19:50-14:40

2 stops26h 50m

San Francisco

Mon 21/9

16:45-17:40

1 stop16h 55m

£553

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Sat 19/9

12:10-20:18

2 stops16h 08m

San Francisco

Wed 14/10

13:45-16:40

1 stop18h 55m

£555

Flights are sorted by cheapest return flights first.

Deals found on 6/7

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 £655). 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 7 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 7 July 2026.

The most flights from GB0 to SFO are scheduled on a Monday (42 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (36 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 7 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

Crew

8.1

Comfort

7.3

Entertainment

7.5

Food

6.9

Boarding

7.7

Overall

7.5

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

Crew

8.1

Comfort

7.3

Entertainment

7.5

Food

6.9

Boarding

7.7

Overall

7.5

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

Crew

8.1

Comfort

7.3

Entertainment

7.5

Food

6.9

Boarding

7.7

Overall

7.5

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

Crew

8.1

Comfort

7.3

Entertainment

7.5

Food

6.9

Boarding

7.7

Overall

7.5

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

Crew

8.1

Comfort

7.3

Entertainment

7.5

Food

6.9

Boarding

7.7

Overall

7.5

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
8,102 reviews
Virgin Atlantic
7.5
Good
691 reviews
Check prices

Crew

8.1

Comfort

7.3

Entertainment

7.5

Food

6.9

Boarding

7.7

Overall

7.5

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 50m. United Airlines provides one of the quickest options available for as low as £511. 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 £1,685 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 £388.

  • 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 £655). 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 7 July 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£171Average£576FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Virgin AtlanticCheapest£185Average£613FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
DeltaCheapest£322Average£677FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SWISSCheapest£351Average£592FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Aer LingusCheapest£356Average£697FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Scandinavian AirlinesCheapest£361Average£511FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£362Average£472FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Brussels AirlinesCheapest£374Average£535FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Austrian AirlinesCheapest£376Average£502FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Air CanadaCheapest£379Average£643FlexibilityNo 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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