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$247+ Cheap flights from San Francisco (SFO) to the United Kingdom

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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LHR
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheap flight deals from San Francisco to United Kingdom

Keep the following information in mind while searching for San Francisco to United Kingdom flight deals. Data was last updated August 18, 2025.

Round-trip from

$516
(SmartFares)

One-way from

$247
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$719

Good round-trip deal

$588 or less

Good one-way deal

$384 or less
From San Francisco to United Kingdom
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One-way flight from San Francisco to United Kingdom
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Highest demand for flights based on searches. 16% potential increase in price ($146 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from San Francisco to United Kingdom.
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Price to beat on a one-way flight from San Francisco to United Kingdom.
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Find flight deals from San Francisco to United Kingdom

Cheapest flights from San Francisco to United Kingdom
Explore the most affordable flight options available from San Francisco to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This Booking.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/144:20 pmSFO - LHR
1 stop18h 30mTAP AIR PORTUGAL
Mon 10/207:50 pmLHR - SFO
1 stop25h 45mTAP AIR PORTUGAL
Deal found 8/15$516
This Booking.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/147:40 pmSFO - LHR
2 stops17h 55mScandinavian Airlines
Tue 10/286:40 amLHR - SFO
1 stop16h 30mScandinavian Airlines
Deal found 8/18$517
This Scandinavian Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:40 pmSFO - LHR
1 stop14h 00mScandinavian Airlines
Mon 10/277:30 pmLHR - SFO
1 stop27h 40mScandinavian Airlines
Deal found 8/16$518
This FlightHub deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/257:40 pmSFO - LHR
2 stops33h 15mScandinavian Airlines
Thu 8/286:40 amLHR - SFO
1 stop17h 50mScandinavian Airlines
Deal found 8/16$519
This Scandinavian Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:40 pmSFO - LHR
2 stops29h 55mScandinavian Airlines
Mon 11/36:40 amLHR - SFO
1 stop15h 55mScandinavian Airlines
Deal found 8/17$521
This Mytrip deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:40 pmSFO - LHR
1 stop18h 00mScandinavian Airlines
Thu 10/307:05 amLHR - SFO
2 stops19h 20mScandinavian Airlines
Deal found 8/16$522
This Mytrip deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/224:20 pmSFO - LGW
2 stops20h 10mTAP AIR PORTUGAL
Tue 11/44:35 pmLGW - SFO
1 stop29h 55mTAP AIR PORTUGAL
Deal found 8/16$523
This Booking.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:40 pmSFO - LHR
2 stops18h 10mScandinavian Airlines
Sun 12/149:05 pmLHR - SFO
2 stops25h 30mScandinavian Airlines
Deal found 8/17$524
This Booking.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/244:35 pmSFO - LGW
2 stops20h 00mTAP AIR PORTUGAL
Thu 12/44:00 pmLGW - SFO
1 stop32h 05mTAP AIR PORTUGAL
Deal found 8/17$525
This Scandinavian Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/247:40 pmSFO - LHR
2 stops30h 55mScandinavian Airlines
Thu 10/307:05 amLHR - SFO
2 stops19h 20mScandinavian Airlines
Deal found 8/17$525
This Booking.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/144:20 pmSFO - LGW
2 stops20h 05mTAP AIR PORTUGAL
Mon 10/204:25 pmLGW - SFO
1 stop29h 10mTAP AIR PORTUGAL
Deal found 8/15$526
This Scandinavian Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:40 pmSFO - LHR
2 stops17h 55mScandinavian Airlines
Wed 10/229:05 pmLHR - SFO
2 stops27h 25mScandinavian Airlines
Deal found 8/18$528

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to United Kingdom 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 2,558,603 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from San Francisco to the United Kingdom that are best for you.

Fly from

San Francisco

Fly to

United Kingdom

Route

Depart

Return

Price

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 10/28

6:00 pm-6:50 pm

2 stops17h 50m

London Heathrow

Mon 11/3

6:40 am-2:35 pm

1 stop15h 55m

$521

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 12/1

4:40 pm-6:50 pm

2 stops18h 10m

London Heathrow

Mon 12/15

6:40 am-2:35 pm

1 stop15h 55m

$521

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 10/9

7:40 pm-9:35 am

2 stops29h 55m

London Heathrow

Thu 10/23

6:40 am-4:30 pm

1 stop17h 50m

$521

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sat 11/8

4:40 pm-6:50 pm

2 stops18h 10m

London Heathrow

Sat 11/15

3:35 pm-2:35 pm

2 stops31h 00m

$525

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Fri 12/5

4:40 pm-9:35 am

2 stops32h 55m

London Heathrow

Sun 12/14

9:05 pm-2:35 pm

2 stops25h 30m

$528

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Sat 10/4

8:10 pm-10:15 am

1 stop30h 05m

London Gatwick

Wed 10/22

6:05 pm-6:10 pm

1 stop32h 05m

$554

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Mon 11/10

4:40 pm-11:55 pm

2 stops23h 15m

London Stansted

Sun 11/16

3:00 pm-2:35 pm

2 stops31h 35m

$561

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Sun 9/7

5:50 am-10:55 am

1 stop21h 05m

London Gatwick

Thu 9/11

10:45 am-11:59 pm

1 stop21h 14m

$564

San FranciscoLondon

SFO - LTN

SFOLTN

San Francisco

Tue 9/16

5:40 pm-10:10 pm

1 stop20h 30m

London Luton

Tue 9/23

10:00 am-3:55 pm

1 stop13h 55m

$565

San FranciscoLondon

SFO - LTN

SFOLTN

San Francisco

Mon 9/8

5:40 pm-4:00 pm

1 stop14h 20m

London Luton

Tue 9/23

10:00 am-3:55 pm

1 stop13h 55m

$567

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 60 results
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Best time to book a flight from San Francisco to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from San Francisco with our price prediction graph.
Estimated round-trip 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 San Francisco to the United Kingdom

What is the cheapest month to book a flight from San Francisco to United Kingdom?

Currently, November is the cheapest month in which you can book a flight from San Francisco to United Kingdom (average of $661). Flying from San Francisco to United Kingdom in June is currently the most expensive (average of $1,097). 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 SFO to GB?

Find hourly flight availability from San Francisco to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 18, 2025.

When flying from San Francisco to United Kingdom, 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 San Francisco to United Kingdom

Explore weekly flight availability from San Francisco to United Kingdom. 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 August 18, 2025.

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

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated August 18, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and Virgin Atlantic from San Francisco to the United Kingdom by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,925 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.4
Good
657 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Iberia
7.0
Good
2,884 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
British Airways
6.7
Okay
7,277 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to United Kingdom. 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 from for flights from San Francisco to United Kingdom?

    Most people fly from San Francisco (SFO) if they book a flight from San Francisco to United Kingdom. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

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

    Departing from San Francisco to United Kingdom will take you 17h 50m. Airlines will cover a distance of 5350 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $308. However, be on the lookout for offers from TAP AIR PORTUGAL and Aer Lingus, as they are both options that can get you from San Francisco to United Kingdom for a low price.

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

    The most popular flight routes from San Francisco to United Kingdom are San Francisco - London Heathrow, San Francisco - London Gatwick and San Francisco - London City.

  • What are the most reliable airlines from San Francisco to United Kingdom?

    Before booking your flight to United Kingdom from San Francisco, check out the most reliable airlines to get you to your destination on time: Iberia (90%), Aeromexico (88%), American Airlines( 87%).

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

    On average you can expect to pay $2,500 for a flight from San Francisco to United Kingdom. The cheapest flight overall is $367 while the most popular route, (San Francisco - London Heathrow) is currently priced at $383.

  • Can I find deals for flights from San Francisco to United Kingdom that include hotel bookings?

    Yes. In addition to deals on San Francisco to United Kingdom flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to United Kingdom?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to United Kingdom.

  • Can I find deals for business class flights from San Francisco to United Kingdom?

    Yes. Cheapflights offers flight deals from San Francisco to United Kingdom 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 San Francisco to United Kingdom?

    Currently, November is the cheapest month in which you can book a flight from San Francisco to United Kingdom (average of $661). Flying from San Francisco to United Kingdom in June is currently the most expensive (average of $1,097). 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

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Alternative routes for San Francisco to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from San Francisco to United Kingdom

Discover the top 10 airlines that operate flights from San Francisco to United Kingdom. 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 2,558,603 searches. Data last updated August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$195Average$954FlexibilityNo cancel feeOn-time62%
Scandinavian AirlinesCheapest$336Average$696FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$433Average$574FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$514Average$794FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$527Average$902FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$562Average$802FlexibilityNo cancel feeOn-time71%
DeltaCheapest$569Average$911FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$571Average$909FlexibilityNo cancel feeOn-time69%
IberiaCheapest$572Average$674FlexibilityNo cancel feeOn-time77%
FinnairCheapest$573Average$670FlexibilityNo cancel feeOn-time76%

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