United Kingdom

$249+ 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LHR
Apr 28 — May 51
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Cheap 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 March 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/34:40 pm
SFO
-
LHR
1 stop17h 00m
Scandinavian Airlines
Thu 11/126:40 am
LHR
-
SFO
1 stop15h 55m
Scandinavian Airlines
Deal found 3/24$645
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:45 pm
SFO
-
LHR
1 stop17h 45m
Scandinavian Airlines
Mon 10/266:40 pm
LHR
-
SFO
1 stop27h 55m
Scandinavian Airlines
Deal found 3/24$646
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/104:40 pm
SFO
-
LHR
1 stop15h 20m
Scandinavian Airlines
Tue 11/176:40 am
LHR
-
SFO
1 stop15h 55m
Scandinavian Airlines
Deal found 3/24$647
This CrystalTravel deal was found by Cheapflights users on 3/24. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:45 pm
SFO
-
LHR
1 stop20h 55m
Scandinavian Airlines
Mon 11/166:40 am
LHR
-
SFO
1 stop15h 55m
Scandinavian Airlines
Deal found 3/24$648
This KAYAK deal was found by Cheapflights users on 3/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/82:43 pm
SFO
-
LHR
2 stops41h 17m
Scandinavian Airlines
Mon 5/116:40 am
LHR
-
SFO
2 stops40h 00m
Scandinavian Airlines
Deal found 3/28$649
This Booking.com deal was found by Cheapflights users on 3/25. 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.
Fri 4/248:20 pm
SFO
-
LHR
1 stop18h 35m
TAP AIR PORTUGAL
Wed 5/136:45 pm
LHR
-
SFO
1 stop29h 50m
TAP AIR PORTUGAL
Deal found 3/25$650
This Mytrip deal was found by Cheapflights users on 3/28. 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.
Mon 4/132:40 pm
SFO
-
STN
3 stops24h 55m
Multiple Airlines
Mon 4/2010:00 am
STN
-
SFO
3 stops34h 40m
Multiple Airlines
Deal found 3/28$653
This Trip.com deal was found by Cheapflights users on 3/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:55 pm
SFO
-
LGW
1 stop29h 50m
TAP AIR PORTUGAL
Tue 6/24:25 pm
LGW
-
SFO
1 stop30h 10m
TAP AIR PORTUGAL
Deal found 3/27$657
This FlightHub deal was found by Cheapflights users on 3/28. 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.
Thu 4/237:55 pm
SFO
-
LGW
1 stop29h 50m
TAP AIR PORTUGAL
Mon 4/274:25 pm
LGW
-
SFO
1 stop30h 10m
TAP AIR PORTUGAL
Deal found 3/28$658
This Trip.com deal was found by Cheapflights users on 3/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:55 pm
SFO
-
LHR
1 stop18h 10m
TAP AIR PORTUGAL
Tue 6/21:45 pm
LHR
-
SFO
1 stop32h 50m
TAP AIR PORTUGAL
Deal found 3/27$658
This Gotogate deal was found by Cheapflights users on 3/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:35 pm
SFO
-
LHR
1 stop33h 45m
TAP AIR PORTUGAL
Sat 4/256:00 am
LHR
-
SFO
1 stop19h 35m
TAP AIR PORTUGAL
Deal found 3/26$659
This Justfly.com deal was found by Cheapflights users on 3/26. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:55 pm
SFO
-
LHR
1 stop18h 10m
TAP AIR PORTUGAL
Wed 5/207:50 pm
LHR
-
SFO
1 stop28h 45m
TAP AIR PORTUGAL
Deal found 3/26$660

Find 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 March 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$649
(KAYAK)

One-way from

$249
(Booking.com)

Popular in

June

Cheapest in

February

Average price

$700

Good round-trip deal

$802 or less

Good one-way deal

$438 or less
Provider with most accurate pricing for San Francisco-London (LON) flight deals.
Provider most trusted by Cheapflights users for San Francisco-London (LON) flights.
From San Francisco to United Kingdom
One-way flight from San Francisco to United Kingdom
Highest demand for flights based on searches. 17% potential increase in price ($163 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($29 potential savings vs. average RT price).
Average for round-trip flights in March 2026
Price to beat on a round-trip flight from San Francisco to United Kingdom.
Price to beat on a one-way flight from San Francisco to United Kingdom.

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 March 29, 2026.
Use the filters below to find and compare flights from San Francisco to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Mon 4/13

6:45 pm-4:50 pm

1 stop38h 05m

London Stansted

Fri 4/24

5:35 pm-4:40 pm

1 stop31h 05m

$757

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Tue 4/14

6:45 pm-4:40 pm

1 stop37h 55m

London Stansted

Thu 5/7

5:35 pm-4:40 pm

1 stop31h 05m

$757

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Tue 4/14

6:45 pm-4:40 pm

1 stop37h 55m

London Stansted

Fri 4/24

5:35 pm-4:40 pm

1 stop31h 05m

$757

San FranciscoBirmingham

SFO - BHX

SFOBHX

San Francisco

Mon 9/21

1:55 pm-5:25 pm

1 stop19h 30m

Birmingham

Wed 9/23

6:05 am-6:41 pm

2 stops20h 36m

$772

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Mon 4/27

12:55 pm-10:10 pm

1 stop25h 15m

London Stansted

Mon 5/4

10:50 am-10:50 am

1 stop32h 00m

$795

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 5/11

11:15 pm-5:30 pm

Nonstop10h 15m

London Heathrow

Thu 5/21

6:30 am-11:45 am

1 stop13h 15m

$800

San FranciscoLondon

SFO - LTN

SFOLTN

San Francisco

Tue 4/14

7:40 pm-11:00 am

1 stop31h 20m

London Luton

Thu 5/7

9:50 pm-12:00 pm

2 stops46h 10m

$803

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 4/27

1:10 pm-6:30 pm

2 stops21h 20m

London Heathrow

Mon 5/4

7:30 pm-2:40 pm

1 stop27h 10m

$815

San FranciscoLondon

SFO - LTN

SFOLTN

San Francisco

Mon 4/13

5:35 pm-3:45 pm

1 stop14h 10m

London Luton

Sun 5/3

9:00 am-9:55 pm

2 stops20h 55m

$817

San FranciscoLondon

SFO - LTN

SFOLTN

San Francisco

Thu 4/16

12:55 pm-11:00 pm

2 stops26h 05m

London Luton

Sat 4/25

6:15 pm-4:40 pm

2 stops30h 25m

$825

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 60 resultsSorted by cheapest first
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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, October is the cheapest month in which you can book a flight from San Francisco to United Kingdom (average of $497). Flying from San Francisco to United Kingdom in June is currently the most expensive (average of $696). 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 March 29, 2026.

It’s typically best to fly out from San Francisco to United Kingdom in the afternoon. Doing so could potentially save you 8% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from San Francisco to United Kingdom?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to United Kingdom. Price data was last updated on March 23, 2026.

Travelers seeking maximum savings on their San Francisco to United Kingdom flight should consider departing on Monday mornings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 March 29, 2026.

The most flights from SFO to GB0 are scheduled on a Saturday (34 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (26 on average).

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

About 11% of weekly flights between San Francisco and United Kingdom have experienced delays in the past year, with the average delay time being 149 minutes.

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

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

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

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

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

Over the last year, British Airways have had the lowest number of delays on this route, with just 9% of flights being delayed.

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 March 29, 2026.
Get a feel of what it's like to fly with Delta,Virgin Atlantic, andUnited Airlines 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.

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Crew

8.5

Overall

7.9

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.

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Crew

8.5

Overall

7.9

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.

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Crew

8.5

Overall

7.9

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.

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Crew

8.5

Overall

7.9

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.

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Crew

8.5

Overall

7.9

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.

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Crew

8.5

Overall

7.9

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 11.0 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 10h 15m. 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 British Airways, with whom users have recently found tickets for as low as $179. However, be on the lookout for offers from JetBlue 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?

  • 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: Air Canada (93%), Austrian Airlines (93%), SWISS( 93%).

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

    On average you can expect to pay $2,666 for a flight from San Francisco to United Kingdom. The cheapest flight overall is $351 while the most popular route, (San Francisco - London Heathrow) is currently priced at $579.

  • 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, October is the cheapest month in which you can book a flight from San Francisco to United Kingdom (average of $497). Flying from San Francisco to United Kingdom in June is currently the most expensive (average of $696). 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

Browse thousands of different options on Cheapflights for your next trip

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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.

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 March 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$151Average$949FlexibilityNo cancel feeOn-time62%
TAP AIR PORTUGALCheapest$373Average$538FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$494Average$655FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$500Average$750FlexibilityNo cancel feeOn-time77%
SWISSCheapest$513Average$828FlexibilityNo cancel feeOn-time79%
DeltaCheapest$514Average$924FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$514Average$771FlexibilityNo cancel feeOn-time70%
Virgin AtlanticCheapest$561Average$889FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$562Average$763FlexibilityNo cancel feeOn-time71%
IberiaCheapest$570Average$691FlexibilityNo cancel feeOn-time77%

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