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Cheap flights from the United Kingdom to San Francisco from £248

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 27/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
20 Feb — 27 Feb1
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 21 January 2026.

Tue 24/208:55
GLA
-
SFO
1 stop14h 05m
British Airways
Tue 3/317:30
SFO
-
GLA
1 stop16h 45m
British Airways
Deal found 19/1£370
Wed 11/309:00
LHR
-
SFO
2 stops19h 39m
Multiple Airlines
Mon 30/308:30
SFO
-
LHR
1 stop17h 05m
Multiple Airlines
Deal found 20/1£383
Fri 6/310:05
LHR
-
SFO
Nonstop11h 15m
Multiple Airlines
Fri 13/313:50
SFO
-
LHR
Nonstop10h 35m
Multiple Airlines
Deal found 20/1£384
Wed 28/113:45
LHR
-
SFO
Nonstop11h 15m
Multiple Airlines
Sun 1/212:50
SFO
-
LHR
Nonstop10h 35m
Multiple Airlines
Deal found 20/1£385
Fri 6/217:40
LCY
-
SFO
1 stop30h 50m
SWISS
Mon 9/219:25
SFO
-
LCY
1 stop13h 40m
SWISS
Deal found 20/1£385
Thu 29/110:05
LHR
-
SFO
Nonstop11h 15m
United Airlines
Wed 11/208:35
SFO
-
LHR
1 stop17h 05m
United Airlines
Deal found 20/1£386
Wed 11/318:40
LGW
-
SFO
1 stop29h 50m
SWISS
Wed 18/320:25
SFO
-
LGW
1 stop14h 25m
SWISS
Deal found 20/1£386
Fri 13/209:55
LCY
-
SFO
1 stop14h 00m
Lufthansa
Tue 31/319:15
SFO
-
LCY
1 stop14h 40m
Lufthansa
Deal found 18/1£386
Tue 3/211:35
LHR
-
SFO
1 stop16h 09m
United Airlines
Fri 13/212:20
SFO
-
LHR
1 stop14h 55m
United Airlines
Deal found 19/1£387
Thu 22/118:30
LHR
-
SFO
1 stop29h 35m
TAP AIR PORTUGAL
Mon 23/216:35
SFO
-
LHR
1 stop36h 05m
TAP AIR PORTUGAL
Deal found 20/1£387
Tue 27/117:25
LHR
-
SFO
2 stops31h 05m
SWISS
Tue 24/219:25
SFO
-
LHR
1 stop14h 25m
SWISS
Deal found 20/1£388
Wed 4/311:35
LHR
-
SFO
2 stops16h 35m
United Airlines
Mon 16/323:55
SFO
-
LHR
1 stop14h 25m
United Airlines
Deal found 19/1£389

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 21 January 2026.

Round-trip from

£370

One-way from

£248

Popular in

July

Cheapest in

February

Average price

£488

Good round-trip deal

£426 or less

Good one-way deal

£457 or less
British Airways
  • British Airways
  • 24/2-3/3
  • 2 total stops
  • 30h 50m total
  • United Kingdom to San Francisco
Search Deals
27/4
  • 27/4
  • 1 total stop
  • 33h 30m total
  • United Kingdom to San Francisco
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£55 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 21 January 2026.
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

Mon 2/2

11:35-20:07

2 stops16h 32m

San Francisco

Thu 26/2

16:15-13:30

1 stop13h 15m

£389

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 18/2

11:35-20:10

2 stops16h 35m

San Francisco

Wed 4/3

06:45-05:55

1 stop15h 10m

£389

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 20/5

09:00-19:00

1 stop18h 00m

San Francisco

Wed 27/5

10:25-10:10

1 stop15h 45m

£394

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 18/2

10:05-13:20

Nonstop11h 15m

San Francisco

Wed 15/4

19:30-14:10

Nonstop10h 40m

£396

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 5/3

10:05-13:20

Nonstop11h 15m

San Francisco

Sat 14/3

18:25-12:00

Nonstop10h 35m

£398

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 6/3

13:45-17:00

Nonstop11h 15m

San Francisco

Sat 14/3

18:25-12:00

Nonstop10h 35m

£398

EdinburghSan Francisco

EDI - SFO

EDISFO

Edinburgh Turnhouse

Wed 8/4

09:15-17:30

1 stop16h 15m

San Francisco

Wed 15/4

19:20-20:20

1 stop17h 00m

£399

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 15/5

06:20-15:50

1 stop17h 30m

San Francisco

Fri 29/5

13:35-12:45

1 stop15h 10m

£404

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 3/2

07:00-16:30

2 stops17h 30m

San Francisco

Mon 9/2

19:25-21:25

2 stops18h 00m

£407

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 7/4

06:30-12:40

1 stop14h 10m

San Francisco

Wed 15/4

12:35-10:40

1 stop14h 05m

£411

Flights are sorted by cheapest return flights first.

Deals found on 19/1

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 £354). Flying from United Kingdom to San Francisco in July is currently the most expensive (average of £442). 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 21 January 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 21 January 2026.

The most flights from GB0 to SFO are scheduled on a Monday (31 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (25 on average).

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

About 13% of weekly flights between United Kingdom and San Francisco have experienced delays in the past year, with the average delay time being 141 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 Sunday 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, Virgin Atlantic have had the lowest number of delays on this route, with just 11% of flights being delayed.

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 21 January 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
678 reviews
Check prices

Crew

8.2

Boarding

7.7

Overall

7.5

Entertainment

7.6

Food

6.9

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
678 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Boarding

7.7

Overall

7.5

Entertainment

7.6

Food

6.9

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
United Airlines
7.4
Good
9,189 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Boarding

7.7

Overall

7.5

Entertainment

7.6

Food

6.9

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Aer Lingus
7.2
Good
1,437 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Boarding

7.7

Overall

7.5

Entertainment

7.6

Food

6.9

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Lufthansa
6.8
Okay
7,736 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Boarding

7.7

Overall

7.5

Entertainment

7.6

Food

6.9

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
British Airways
6.7
Okay
7,690 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Boarding

7.7

Overall

7.5

Entertainment

7.6

Food

6.9

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

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.

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

    A quick flight from United Kingdom to San Francisco can take about 16h 15m. United Airlines provides one of the quickest options available for as low as £399. Airlines will cover a distance of 5047 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 Vueling, which is currently one of the cheapest options available, starting at £196. British Airways flights start at £209 while deals on JetBlue start at £243 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 KLM (82%), Air France (82%) and Delta (82%).

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

    On average you can expect to pay £1,999 for a flight from United Kingdom to San Francisco. The cheapest flight overall is £360 while the most popular route, (London Heathrow - San Francisco) is currently priced at £291.

  • 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 £354). Flying from United Kingdom to San Francisco in July is currently the most expensive (average of £442). 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
Pacific Grove

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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 21 January 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£237Average£577FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest£335Average£569FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£349Average£572FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£352Average£692FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Scandinavian AirlinesCheapest£353Average£501FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£355Average£455FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
SWISSCheapest£357Average£550FlexibilityNo cancel feeOn-time79%
Search SWISS flights
FinnairCheapest£373Average£510FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£374Average£596FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£374Average£532FlexibilityNo cancel feeOn-time70%
Search British Airways 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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