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Cheap flights from London to San Francisco from $560

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 20/11. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SFO
13 Nov — 20 Nov1
1 adult

The best prices from London to San Francisco are usually found in February or November, booked 24 days in advance, depart on a Thursday or Tuesday and return on a Monday

Find flights from London to San Francisco within your budget

Customise your flight search to find flights from London 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 705,065 searches. Data last updated 8 November 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 13/12

18:30-14:55

1 stop28h 25m

$851

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 26/4

20:50-18:00

1 stop29h 10m

$887

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 15/1

08:25-19:29

1 stop19h 04m

$1,063

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Mon 18/11

18:45-16:25

1 stop29h 40m

$1,109

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 16/11

11:45-15:00

Nonstop11h 15m

$1,131

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 28/11

10:05-13:15

Nonstop11h 10m

$1,134

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 28/11

13:45-16:55

Nonstop11h 10m

$1,135

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 14/11

08:00-22:57

3 stops22h 57m

$1,138

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Sat 23/11

16:55-16:45

1 stop31h 50m

$1,320

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Tue 22/4

06:45-15:50

1 stop17h 05m

$1,627

Flights are sorted by cheapest first

Deals found on 7/11

Showing 1-10 of 48 results
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Cheap flight deals from London to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 8 November 2024.

Round-trip from

$700

One-way from

$560

Popular in

August

Cheapest in

February
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 25/2-17/3
  • 2 total stops
  • 45h 10m total
  • London to San Francisco
20/11
  • 20/11
  • 1 total stop
  • 20h 15m total
  • London to San Francisco
High demand for flights, 27% potential price rise
Best time to find cheap flights, 19% potential price drop

Find flight deals from London to San Francisco

Cheapest flights from London to San Francisco
Explore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 November 2024.

Fri 13/1206:40LHR - SFO
1 stop17h 00mScandinavian Airlines
Sun 19/117:30SFO - LHR
1 stop16h 10mScandinavian Airlines
Deal found 7/11$792
Sun 15/1219:55LHR - SFO
1 stop26h 50mTAP AIR PORTUGAL
Sat 25/116:40SFO - LHR
1 stop16h 50mTAP AIR PORTUGAL
Deal found 7/11$855
Tue 26/1116:35LGW - SFO
1 stop30h 05mTAP AIR PORTUGAL
Mon 9/1216:40SFO - LGW
1 stop15h 05mTAP AIR PORTUGAL
Deal found 6/11$878
Tue 10/1206:30LHR - SFO
2 stops19h 00mUnited Airlines
Tue 24/1218:34SFO - LHR
1 stop34h 56mUnited Airlines
Deal found 7/11$918
Thu 14/1106:30LHR - SFO
1 stop13h 20mDelta
Sun 16/216:40SFO - LHR
Nonstop10h 15mDelta
Deal found 7/11$929
Mon 25/1106:30LHR - SFO
1 stop14h 05mLufthansa
Mon 2/1212:50SFO - LHR
Nonstop10h 35mLufthansa
Deal found 8/11$944
Fri 22/1108:55LHR - SFO
1 stop15h 30mMultiple Airlines
Sat 7/1212:50SFO - LHR
Nonstop10h 35mMultiple Airlines
Deal found 7/11$947
Thu 5/1213:35LHR - SFO
2 stops61h 42mAustrian Airlines
Wed 11/1208:25SFO - LHR
1 stop15h 30mAustrian Airlines
Deal found 7/11$948
Mon 25/1115:20LHR - SFO
Nonstop11h 25mBritish Airways
Thu 12/1210:21SFO - LHR
1 stop13h 54mBritish Airways
Deal found 7/11$954
Thu 5/1218:40LGW - SFO
1 stop29h 45mSWISS
Mon 9/1219:25SFO - LGW
1 stop14h 25mSWISS
Deal found 7/11$954
Sun 24/1112:30LHR - SFO
1 stop16h 41mFinnair
Thu 12/1210:21SFO - LHR
1 stop13h 54mFinnair
Deal found 7/11$972
Sun 24/1106:00LHR - SFO
1 stop18h 25mSWISS
Sun 1/1219:25SFO - LHR
1 stop14h 25mSWISS
Deal found 7/11$976

Best time to book a flight from London to San Francisco

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

Travel insights for flights from London to San Francisco

Get recent, data-driven insights about flights from London to San Francisco including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London to San Francisco?

Use this chart to determine the optimal time to book a return flight from London to San Francisco. Price data was last updated on 1 November 2024.

The best time to book flights from London to San Francisco is 24 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from London to San Francisco (average of $879). Flying from London to San Francisco in December is currently the most expensive (average of $1,167). 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 LON to SFO?

Find hourly flight availability from London 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 8 November 2024.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 12% on flights from London to San Francisco by exploring options for tickets at midday.

Weekly flight availability from London to San Francisco

Explore weekly flight availability from London 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 8 November 2024.

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

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.