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$325+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LHR
mrt. 26 — apr. 21
wo 3/26
wo 4/2
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 maart 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$599
(Cheapflightsfares)

One-way from

$325
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$691

Good round-trip deal

$710 or less

Good one-way deal

$467 or less
Provider with most accurate pricing for San Francisco-London (LON) flight deals.
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Provider most trusted by Cheapflights users for San Francisco-London (LON) flights.
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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. 20% potential increase in price ($195 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in March 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 maart 21, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 4/78:05 amSFO - LHR
1 stop14h 20mIberia
di 4/1510:45 amLHR - SFO
Nonstop11h 05mIberia
Deal found 3/19$599
This Kiwi.com deal was found by Cheapflights users on 3/19. 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.
za 5/32:18 pmSFO - LGW
1 stop36h 37mMultiple Airlines
zo 5/1110:55 amLGW - SFO
1 stop17h 32mMultiple Airlines
Deal found 3/19$600
This Expedia deal was found by Cheapflights users on 3/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
zo 10/197:40 pmSFO - LHR
1 stop14h 00mScandinavian Airlines
zo 10/267:30 pmLHR - SFO
1 stop30h 25mScandinavian Airlines
Deal found 3/20$601
This Mytrip deal was found by Cheapflights users on 3/20. 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.
ma 4/77:40 pmSFO - STN
2 stops18h 30mMultiple Airlines
ma 4/141:20 pmSTN - SFO
2 stops35h 10mMultiple Airlines
Deal found 3/20$604
This TAP AIR PORTUGAL deal was found by Cheapflights users on 3/20. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
di 9/234:20 pmSFO - LGW
1 stop33h 25mTAP AIR PORTUGAL
wo 10/154:25 pmLGW - SFO
1 stop30h 05mTAP AIR PORTUGAL
Deal found 3/20$605
This Booking.com deal was found by Cheapflights users on 3/20. 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.
di 5/68:00 pmSFO - LGW
1 stop16h 25mVueling
di 5/137:25 amLGW - SFO
1 stop18h 35mVueling
Deal found 3/20$606
This lastminute.com deal was found by Cheapflights users on 3/21. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
zo 4/64:40 pmSFO - LHR
1 stop13h 35mVirgin Atlantic
di 4/226:15 amLHR - SFO
1 stop14h 35mVirgin Atlantic
Deal found 3/21$606
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
zo 4/69:10 pmSFO - LGW
2 stops36h 40mSWISS
di 4/226:35 pmLGW - SFO
1 stop29h 35mSWISS
Deal found 3/20$607
This Mytrip deal was found by Cheapflights users on 3/20. 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.
ma 4/77:40 pmSFO - LTN
2 stops17h 45mMultiple Airlines
ma 4/1412:50 pmLTN - SFO
2 stops35h 40mMultiple Airlines
Deal found 3/20$609
This Gotogate deal was found by Cheapflights users on 3/21. 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.
zo 4/67:00 amSFO - LHR
1 stop22h 20mMultiple Airlines
di 4/228:45 amLHR - SFO
1 stop15h 25mMultiple Airlines
Deal found 3/21$609
This Iberia deal was found by Cheapflights users on 3/21. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
di 4/85:02 amSFO - LGW
2 stops21h 48mIberia
di 4/293:05 pmLGW - SFO
1 stop17h 05mIberia
Deal found 3/21$610
This Cheapflightsfares deal was found by Cheapflights users on 3/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wo 9/34:35 pmSFO - GLA
1 stop13h 40mBritish Airways
wo 9/248:40 amGLA - SFO
1 stop16h 45mBritish Airways
Deal found 3/19$614

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 maart 21, 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

ma 4/7

8:05 am-6:25 am

1 stop14h 20m

London Heathrow

di 4/15

10:45 am-1:50 pm

Nonstop11h 05m

$599

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

za 5/3

2:18 pm-10:55 am

1 stop36h 37m

London Gatwick

zo 5/11

10:55 am-8:27 pm

1 stop17h 32m

$600

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

ma 4/7

7:40 pm-5:40 pm

1 stop14h 00m

London Heathrow

ma 4/14

9:05 pm-4:30 pm

2 stops27h 25m

$604

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

ma 4/7

7:40 pm-10:10 pm

2 stops18h 30m

London Stansted

ma 4/14

1:20 pm-4:30 pm

2 stops35h 10m

$604

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

di 5/6

8:00 pm-8:25 pm

1 stop16h 25m

London Gatwick

di 5/13

7:25 am-6:00 pm

1 stop18h 35m

$606

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

zo 4/6

7:05 am-8:50 am

1 stop17h 45m

London Heathrow

di 4/22

6:15 am-12:50 pm

1 stop14h 35m

$606

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

zo 4/6

9:10 pm-5:50 pm

2 stops36h 40m

London Gatwick

di 4/22

6:35 pm-4:10 pm

1 stop29h 35m

$607

San FranciscoLondon

SFO - LTN

SFOLTN

San Francisco

ma 4/7

7:40 pm-9:25 pm

2 stops17h 45m

London Luton

ma 4/14

12:50 pm-4:30 pm

2 stops35h 40m

$609

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

di 4/8

5:02 am-10:50 am

2 stops21h 48m

London Gatwick

di 4/29

3:05 pm-12:10 am

1 stop17h 05m

$610

San FranciscoGlasgow

SFO - GLA

SFOGLA

San Francisco

wo 9/3

4:35 pm-2:15 pm

1 stop13h 40m

Glasgow Intl

wo 9/24

8:40 am-5:25 pm

1 stop16h 45m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/21

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 $1,122). 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 maart 21, 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 maart 21, 2025.

The most flights from SFO to GB0 are scheduled on a Monday (32 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (32 on average).

Rainfall in United Kingdom by month

Plan your trip to United Kingdom by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in United Kingdom ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit United Kingdom when rainfall is around 1.6 in.

Temperature in United Kingdom by month

Plan your trip to United Kingdom by taking into account the average temperature totals by month.

If weather is an important factor for your trip to United Kingdom, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 maart 21, 2025.
Peruse reviews from past customers who have flown with ANA, Delta and KLM from San Francisco to United Kingdom to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.3
Very good
826 reviews

Crew

8.7

Entertainment

7.9

Food

7.6

Comfort

8.2

Overall

8.3

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
ANA
8.3
Very good
826 reviews
ANA
8.3
Very good
826 reviews

Crew

8.7

Entertainment

7.9

Food

7.6

Comfort

8.2

Overall

8.3

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Delta
8.0
Very good
7,895 reviews
ANA
8.3
Very good
826 reviews

Crew

8.7

Entertainment

7.9

Food

7.6

Comfort

8.2

Overall

8.3

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
KLM
7.8
Good
1,319 reviews
ANA
8.3
Very good
826 reviews

Crew

8.7

Entertainment

7.9

Food

7.6

Comfort

8.2

Overall

8.3

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Air Transat
7.8
Good
380 reviews
ANA
8.3
Very good
826 reviews

Crew

8.7

Entertainment

7.9

Food

7.6

Comfort

8.2

Overall

8.3

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.
Finnair
7.6
Good
1,266 reviews
ANA
8.3
Very good
826 reviews

Crew

8.7

Entertainment

7.9

Food

7.6

Comfort

8.2

Overall

8.3

Boarding

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

SFO - HND

Don't bother with economy, it's so small!!! I'm a small person and I was cramped in the middle seat on a 11 hour flight. Not fun. Go for business or first class for such a long flight if you can or be prepared to have trouble moving when you stand up. Also be prepared to have trouble sleeping too. Crew was awesome though, they were helpful and provided excellent service.

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.

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

    The cheapest airline one-way is Vueling, with whom users have recently found tickets for as low as $343. However, be on the lookout for offers from TAP AIR PORTUGAL and British Airways, 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: United Airlines (86%), Iberia (86%), American Airlines( 84%).

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

    On average you can expect to pay $2,901 for a flight from San Francisco to United Kingdom. The cheapest flight overall is $394 while the most popular route, (San Francisco - London Heathrow) is currently priced at $554.

  • 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 $1,122). 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

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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 maart 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$316Average$687FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$428Average$535FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$465Average$660FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$527Average$898FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$554Average$978FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$555Average$808FlexibilityNo cancel feeOn-time79%
American AirlinesCheapest$562Average$901FlexibilityNo cancel feeOn-time71%
Virgin AtlanticCheapest$567Average$958FlexibilityNo cancel feeOn-time72%
IberiaCheapest$572Average$675FlexibilityNo cancel feeOn-time77%
JetBlueCheapest$584Average$1,134FlexibilityNo cancel feeOn-time62%
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