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£391+ Cheap flights to San Francisco

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
— SFO
16 Jul — 23 Jul1
1 adult

Flights to San Francisco in 2025

Find the latest flights to San Francisco in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 11 July 2025.

Return from

£395

One-way from

£391

Popular in

July

Cheapest in

February

Average price

£662

Good round-trip deal

£481 or less

Good one-way deal

£565 or less
SWISS
  • SWISS
  • 24/8-9/9
  • 2 total stops
  • 42h 25m total
  • London to San Francisco
Aer Lingus
  • Aer Lingus
  • 3/9
  • 1 total stop
  • 31h 05m total
  • London to San Francisco
Highest demand for flights based on searches. 18% potential increase in price (£81 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£11 potential savings vs. average return price).
Average for return flights in July 2025
Price to beat on a round-trip flight from London to San Francisco.
Price to beat on a one-way flight from London to San Francisco.

Find flight deals to San Francisco

Cheapest flights to San Francisco
Explore the most affordable flight options available to San Francisco. Find the lowest fares based on data from user searches, with prices last updated on 11 July 2025.

Sun 24/820:05LHR - SFO
1 stop28h 05mSWISS
Tue 9/919:30SFO - LHR
1 stop14h 20mSWISS
Deal found 10/7£395
Fri 12/918:40LGW - SFO
1 stop29h 55mSWISS
Mon 15/914:20SFO - LGW
1 stop19h 30mSWISS
Deal found 10/7£395
Sun 24/806:30LHR - SFO
1 stop14h 10mLufthansa
Tue 9/916:05SFO - LHR
Nonstop10h 20mLufthansa
Deal found 10/7£397
Mon 20/1016:25LGW - SFO
1 stop29h 10mTAP AIR PORTUGAL
Sat 1/1117:35SFO - LGW
1 stop33h 15mTAP AIR PORTUGAL
Deal found 10/7£397
Mon 6/1008:10LCY - SFO
1 stop16h 00mSWISS
Sat 18/1019:30SFO - LCY
1 stop15h 15mSWISS
Deal found 10/7£397
Sun 24/807:30LHR - SFO
1 stop16h 25mUnited Airlines
Tue 9/919:55SFO - LHR
Nonstop10h 15mUnited Airlines
Deal found 9/7£398
Sun 24/820:05LHR - SFO
1 stop28h 05mMultiple Airlines
Tue 9/919:55SFO - LHR
Nonstop10h 15mMultiple Airlines
Deal found 9/7£400
Sat 6/910:25LGW - SFO
2 stops19h 07mMultiple Airlines
Sat 20/908:45SFO - LGW
1 stop16h 45mMultiple Airlines
Deal found 9/7£402
Wed 10/919:30LHR - SFO
2 stops31h 29mAustrian Airlines
Thu 25/919:50SFO - LHR
Nonstop10h 20mAustrian Airlines
Deal found 10/7£403
Tue 16/912:20LGW - SFO
2 stops18h 55mFinnair
Fri 26/906:00SFO - LGW
2 stops18h 35mFinnair
Deal found 9/7£403
Fri 12/910:45LHR - SFO
Nonstop11h 05mBritish Airways
Sun 21/916:30SFO - LHR
Nonstop10h 25mBritish Airways
Deal found 11/7£404
Fri 19/908:40LHR - SFO
2 stops18h 58mAir Canada
Fri 10/1013:36SFO - LHR
1 stop15h 44mAir Canada
Deal found 11/7£409

Cheapflights Fare Finder

Locate flights to San Francisco that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 11 July 2025.
Use the filters below to find and compare flights to San Francisco that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 24/8

20:05-16:10

1 stop28h 05m

San Francisco

Tue 9/9

19:30-17:50

1 stop14h 20m

£395

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Fri 12/9

18:40-16:35

1 stop29h 55m

San Francisco

Mon 15/9

14:20-17:50

1 stop19h 30m

£395

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 24/8

06:30-12:40

1 stop14h 10m

San Francisco

Tue 9/9

13:05-07:25

Nonstop10h 20m

£397

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Mon 20/10

16:25-13:35

1 stop29h 10m

San Francisco

Sat 1/11

17:35-09:50

1 stop33h 15m

£397

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Mon 6/10

08:10-16:10

1 stop16h 00m

San Francisco

Sat 18/10

19:30-18:45

1 stop15h 15m

£397

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 24/8

07:30-15:55

1 stop16h 25m

San Francisco

Tue 9/9

19:55-14:10

Nonstop10h 15m

£398

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 24/8

20:05-16:10

1 stop28h 05m

San Francisco

Tue 9/9

19:55-14:10

Nonstop10h 15m

£400

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Sat 6/9

10:25-21:32

2 stops19h 07m

San Francisco

Sat 20/9

08:45-09:30

1 stop16h 45m

£402

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 10/9

19:30-18:59

2 stops31h 29m

San Francisco

Thu 25/9

19:50-14:10

Nonstop10h 20m

£403

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Tue 16/9

12:20-23:15

2 stops18h 55m

San Francisco

Fri 26/9

06:00-08:35

2 stops18h 35m

£403

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 47 results
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Best time to book a flight to San Francisco

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

When is the best time to book a flight 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 27 June 2025.

Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

How long is the flight to San Francisco?

On average, a flight from London to San Francisco takes 16 hours 16 minutes. Flights to San Francisco from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly to San Francisco?

Use this chart to determine the cheapest time to fly return from London to San Francisco. Price data was last updated on 16 December 2024.

Users looking for the lowest fares to San Francisco should consider flying on Friday evenings, when prices are typically cheapest. Budget-minded travellers will want to avoid Sunday evenings, when prices are usually at their highest.

Weekly flight availability to San Francisco

The most flights from London to San Francisco are scheduled on a Monday (43 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (37 on average).

What are the cheapest airlines that fly to San Francisco?

The cheapest airlines flying from London to San Francisco are Delta, TAP AIR PORTUGAL and SWISS.

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.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated 11 July 2025.
Check out reviews from past customers who have flown Delta, Austrian Airlines, andFinnair to the United States to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very Good

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

FAQs about flying to San Francisco

San Francisco airport overview

San Francisco International Airport is located 21km (13 miles) south of downtown San Francisco and is the largest airport in the Bay Area and the second-busiest airport in California.

Comprising four terminals – Terminals 1, 2, 3 and the International Terminal – that form a ring around a multi-storey Domestic Parking garage, San Francisco International is easy to navigate. Terminals 1-3 handle all domestic flights, while the International Terminal mainly manages international flights. Customs, immigrations and baggage claims are generally fast; staff are friendly, signage is good and transport to and from the airport is excellent. Delays are common, though, due to the region’s adverse weather patterns; however, there are plans to extend the runways in order to aid aircraft flying in low visibility conditions.

San Francisco International is clean and modern. With its newly revamped Terminal 2 housing an award-winning aviation museum and library, along with an extensive array of retail, dining, entertainment and health establishments, it is truly a world-class facility.

Flights to San Francisco International Airport comes from a number of destinations worldwide, including Toronto, Paris, Tokyo, London, Hong Kong, Seoul, Lima, Frankfurt, Singapore, San Salvador, Beijing, Mexico City, Sydney and Cancun, in addition to numerous domestic routes.

  • What airport do you fly into for flights to San Francisco?

    For a flight to San Francisco, you will be flying into San Francisco. San Francisco (SFO) is just 11.8 mi from the center of the city. Booking flights from London to San Francisco should be relatively easy as there are 42 daily flights from 17 different airlines.

  • Can I find cheaper flights to San Francisco if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to San Francisco on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to San Francisco?

    Based on reviews from Cheapflights users, Delta is rated the highest out of the airlines that fly to San Francisco.

  • What is the cheapest airport to fly to in San Francisco?

    San Francisco is currently the cheapest airport to fly to in San Francisco. One-way flights to San Francisco typically cost £35, while return flights cost around £36.

  • How much is a return flight to San Francisco?

    A return flight to San Francisco will typically cost around £173, however they can be found for as little as £49.

  • Where does the fastest flight to San Francisco depart from?

    For those looking to save time traveling to San Francisco, London offers the quickest one-way flight (11 hours 0 minutes).

  • Which airport is closest to Mission San Francisco de Asís?

    f being close to Mission San Francisco de Asís is important to you, you’ll want to land at San Francisco Airport.

  • Does San Francisco have car hire?

    Yes. Those touching down at San Francisco can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to San Francisco?

    Yes. San Francisco has hotels nearby for those requiring accommodations. Grand Hyatt At Sfo is the closest property to San Francisco (1.0 mi away from San Francisco).

See more FAQs

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Vallejo
Newark
South San Francisco
Bodega Bay
Pacific Grove
Union City

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