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Cheap flights from San Francisco Bay Area to London from £274

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 18/7. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LON
25 Apr — 2 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Francisco Bay Area to London

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco Bay Area to London
Explore the most affordable flight options available from San Francisco Bay Area to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 March 2026.

Mon 11/516:45
SFO
-
LHR
1 stop17h 45m
Scandinavian Airlines
Tue 19/506:40
LHR
-
SFO
1 stop16h 00m
Scandinavian Airlines
Deal found 22/3£480
Tue 3/1116:40
SFO
-
LHR
1 stop17h 00m
Scandinavian Airlines
Thu 12/1106:40
LHR
-
SFO
1 stop15h 55m
Scandinavian Airlines
Deal found 24/3£482
Thu 15/1016:45
SFO
-
LHR
1 stop17h 45m
Scandinavian Airlines
Mon 26/1018:40
LHR
-
SFO
1 stop27h 55m
Scandinavian Airlines
Deal found 24/3£482
Mon 13/416:45
SFO
-
LHR
2 stops40h 15m
Scandinavian Airlines
Thu 16/417:00
LHR
-
SFO
1 stop29h 40m
Scandinavian Airlines
Deal found 22/3£484
Thu 20/813:00
SFO
-
LHR
2 stops40h 35m
Scandinavian Airlines
Sun 23/806:40
LHR
-
SFO
2 stops40h 00m
Scandinavian Airlines
Deal found 23/3£485
Fri 24/420:20
SFO
-
LHR
1 stop18h 35m
TAP AIR PORTUGAL
Wed 13/518:45
LHR
-
SFO
1 stop29h 50m
TAP AIR PORTUGAL
Deal found 25/3£485
Tue 14/416:35
SFO
-
LGW
1 stop37h 25m
TAP AIR PORTUGAL
Mon 20/421:15
LGW
-
SFO
2 stops25h 20m
TAP AIR PORTUGAL
Deal found 22/3£489
Thu 16/419:55
SFO
-
LGW
1 stop29h 50m
TAP AIR PORTUGAL
Thu 23/421:20
LGW
-
SFO
2 stops27h 30m
TAP AIR PORTUGAL
Deal found 22/3£491
Thu 16/419:55
SFO
-
LHR
1 stop30h 25m
TAP AIR PORTUGAL
Wed 20/519:50
LHR
-
SFO
1 stop28h 45m
TAP AIR PORTUGAL
Deal found 23/3£491
Thu 23/419:55
SFO
-
LGW
1 stop29h 50m
TAP AIR PORTUGAL
Thu 30/414:50
LGW
-
SFO
1 stop34h 00m
TAP AIR PORTUGAL
Deal found 24/3£491
Tue 14/416:35
SFO
-
LHR
1 stop18h 15m
TAP AIR PORTUGAL
Wed 20/519:50
LHR
-
SFO
1 stop28h 45m
TAP AIR PORTUGAL
Deal found 23/3£492
Thu 23/419:55
SFO
-
LGW
1 stop29h 50m
TAP AIR PORTUGAL
Thu 7/521:20
LGW
-
SFO
2 stops27h 30m
TAP AIR PORTUGAL
Deal found 23/3£495

Find flight deals from San Francisco Bay Area to London

Keep the following information in mind while searching for San Francisco Bay Area to London flight deals. Data was last updated 26 March 2026.

Round-trip from

£480

One-way from

£274

Popular in

June

Cheapest in

February

Average price

£523
Scandinavian Airlines
  • Scandinavian Airlines
  • 11/5-19/5
  • 2 total stops
  • 33h 45m total
  • San Francisco Bay Area to London
Search Deals
18/7
  • 18/7
  • 1 total stop
  • 14h 45m total
  • San Francisco Bay Area to London
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£90 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco Bay Area to London 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 26 March 2026.
Use the filters below to find and compare flights from San Francisco Bay Area to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Tue 21/4

16:35-09:45

1 stop33h 10m

London Gatwick

Mon 25/5

21:15-14:35

2 stops25h 20m

£515

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Sun 19/4

18:45-16:40

1 stop37h 55m

London Stansted

Sat 25/4

10:50-16:40

1 stop37h 50m

£565

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Wed 9/9

18:45-22:10

1 stop19h 25m

London Stansted

Sat 26/9

10:50-16:40

1 stop37h 50m

£591

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 11/5

23:15-17:30

Nonstop10h 15m

London Heathrow

Thu 21/5

06:30-11:45

1 stop13h 15m

£597

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Sun 3/5

18:45-22:10

1 stop19h 25m

London Stansted

Tue 12/5

17:35-16:40

1 stop31h 05m

£601

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 12/8

13:05-07:25

Nonstop10h 20m

London Heathrow

Mon 24/8

13:35-14:20

1 stop32h 45m

£605

OaklandLondon

OAK - LHR

OAKLHR

Oakland

Mon 6/4

05:55-13:45

2 stops23h 50m

London Heathrow

Mon 13/4

09:55-16:24

2 stops38h 29m

£612

San JoseLondon

SJC - LGW

SJCLGW

San Jose

Tue 14/4

10:10-16:00

2 stops21h 50m

London Gatwick

Tue 21/4

10:35-22:15

2 stops19h 40m

£616

San JoseLondon

SJC - LGW

SJCLGW

San Jose

Mon 13/4

13:59-16:00

2 stops18h 01m

London Gatwick

Tue 12/5

10:35-22:14

2 stops19h 39m

£616

San FranciscoLondon

SFO - LCY

SFOLCY

San Francisco

Mon 11/5

13:45-16:40

1 stop18h 55m

London City

Wed 20/5

19:00-11:45

1 stop24h 45m

£622

Flights are sorted by cheapest return flights first.

Deals found on 22/3

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
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6

Best time to book a flight from San Francisco Bay Area to London

Have a flexible travel schedule? Discover the best time to fly to London from San Francisco Bay Area 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 San Francisco Bay Area to London

What is the cheapest month to book a flight from San Francisco Bay Area to London?

Currently, October is the cheapest month in which you can book a flight from San Francisco Bay Area to London (average of £371). Flying from San Francisco Bay Area to London in June is currently the most expensive (average of £520). 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 XIH to LON?

Find hourly flight availability from San Francisco Bay Area to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 March 2026.

It’s typically best to fly out from San Francisco Bay Area to London in the evening. Doing so could potentially save you 31% on the flight price compared to flying at midday, which is usually more expensive.

What is the cheapest day to fly from San Francisco Bay Area to London?

Use this chart to determine the cheapest time to fly return from San Francisco Bay Area to London. Price data was last updated on 23 March 2026.

Travellers seeking maximum savings on their San Francisco Bay Area to London flight should consider departing on Tuesday evenings when fares are most often at their lowest. Friday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 26 March 2026.
See what other customers who have flown with KLM,Virgin Atlantic, andUnited Airlines from San Francisco Bay Area to London have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,478 reviews
Check prices

Comfort

7.6

Crew

8.4

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,478 reviews
KLM
7.8
Good
1,478 reviews
Check prices

Comfort

7.6

Crew

8.4

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Virgin Atlantic
7.5
Good
685 reviews
KLM
7.8
Good
1,478 reviews
Check prices

Comfort

7.6

Crew

8.4

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
United Airlines
7.4
Good
9,488 reviews
KLM
7.8
Good
1,478 reviews
Check prices

Comfort

7.6

Crew

8.4

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Lufthansa
6.8
Okay
7,871 reviews
KLM
7.8
Good
1,478 reviews
Check prices

Comfort

7.6

Crew

8.4

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
British Airways
6.7
Okay
7,820 reviews
KLM
7.8
Good
1,478 reviews
Check prices

Comfort

7.6

Crew

8.4

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Related info for your journey

Find useful and relevant information for your journey from San Francisco Bay Area to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from San Francisco Bay Area to London?

    Departing from San Francisco Bay Area to London will take you 10h 15m. San Francisco Bay Area and London are separated by a distance of 5350 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from San Francisco Bay Area to London one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as £245. Users have also found prices from £262 and £266 on Virgin Atlantic and KLM, respectively.

  • What are the most popular routes from San Francisco Bay Area to London?

    The most popular route from San Francisco Bay Area to London is San Francisco - London Heathrow. You may also consider San Francisco - London Gatwick or San Francisco - London Stansted.

  • What are the most reliable airlines from San Francisco Bay Area to London?

    No one likes to see their flight delayed. When booking a flight from San Francisco Bay Area to London consider choosing Air Canada (93%), Austrian Airlines (93%) or SWISS (93%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from San Francisco Bay Area to London?

    On average you can expect to pay £1,306 for a flight from San Francisco Bay Area to London. The cheapest flight overall is £270 while the most popular route, (San Francisco - London Heathrow) is currently priced at £428.

  • Can I find deals for flights from San Francisco Bay Area to London that include hotel bookings?

    Yes. In addition to deals on San Francisco Bay Area to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Francisco Bay Area to London?

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

  • Can I find deals for business class flights from San Francisco Bay Area to London?

    Yes. Cheapflights offers flight deals from San Francisco Bay Area to London 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 Bay Area to London?

    Currently, October is the cheapest month in which you can book a flight from San Francisco Bay Area to London (average of £371). Flying from San Francisco Bay Area to London in June is currently the most expensive (average of £520). 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 London?

Book flights to London if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Hounslow
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Eastbourne
Guildford
Watford
Kingston upon Thames
Romford
Ipswich
Bedford
Chelmsford
Bishop's Stortford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 5 airlines flying from San Francisco Bay Area to London

Discover the top 5 airlines that operate flights from San Francisco Bay Area to London. 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 26 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£369Average£513FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£371Average£690FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£373Average£654FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£387Average£512FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£396Average£583FlexibilityNo cancel feeOn-time69%
Search United Airlines 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 San Francisco Bay Area to London?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from San Francisco Bay Area today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from San Francisco Bay Area to London?

Cheapflights simply makes it quick and affordable to book flights from San Francisco Bay Area to London by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from San Francisco Bay Area to London with no change fees?

Need flexible booking options for your flight to London from San Francisco Bay Area? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from San Francisco Bay Area to London become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from San Francisco Bay Area today and book when prices fit your budget.

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