Find cheap flights from San Francisco to London

SFO - LON

Find cheap flights from San Francisco to London

Round-trip
Economy
San Francisco (SFO)
London All airports
Thu 8/6
Thu 8/13
Any month
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Good to know

Low season

October Best time to beat the crowds with an average 25% drop in price.

High season

June Most popular time to fly with an average 34% increase in price.

Average price of a round-trip

$566 (avg. price over the last 2 weeks)

Good deal for a round-trip

$523 or less

When to book flights from San Francisco to London

Estimated round-trip price
Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $384 or less.
  • The cheapest flight from San Francisco to London was found 62 days before departure, on average.
  • Book at least 4 weeks before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly is October.
  • Morning departure is around 12% cheaper than an evening flight, on average*.
  • Interested in flights from San Francisco to London? If so, there are three different airports that you can choose to depart from. While San Francisco International Airport is the primary airport in the region and offers a diverse selection of flights, Oakland International Airport is a smaller and quieter choice. San Jose Mineta International Airport is also an option that is practical for travelers leaving from the southern region of San Francisco.
  • When flying to London, there are five different airports that you can choose from. London Heathrow is the largest and is most convenient for those flying direct, while London City, London Stansted, and London Luton are best for travelers who prefer small and quiet airports. Finally, London Gatwick is a practical option for anyone planning on staying in the suburbs.
  • To get a direct flight from San Francisco to London, consider flying with either British Airways or American Airlines. Both companies are known for having a diverse selection of flights between these two locations, plus they offer affordable tickets and provide amenities such as free checked bags, food, and drinks.
  • If you’re interested in having a comfortable place to pass the time before your flight takes off, book your ticket with an airline that has a private lounge in San Francisco International Airport. American, Delta, and United Airlines all have private lounges in San Francisco, and they often offer access passes that are complimentary or reduced price for their customers.
  • For those who will be traveling with children, make sure to stop by one of the Stay and Play areas located in London Heathrow Airport. These play areas contain a variety of games, toys, and activities, making them the perfect way for children to burn off some energy after sitting for a long flight.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking San Francisco to London flights

How long does a flight from San Francisco to London take?

How many flights are there between San Francisco and London?

Which airlines provide the cheapest flights from San Francisco to London?

Do I need a passport to fly between San Francisco and London?

Which airlines fly most frequently between San Francisco and London?

What’s the cheapest day of the week to fly San Francisco to London?

Which airports will I be using when flying from San Francisco to London?

What is the best way to travel from Gatwick Airport to downtown London?

What are some good hotels near London Heathrow Airport?

Can I store my luggage at London Heathrow Airport?

Does London Heathrow Airport have any prayer rooms?

How does KAYAK find such low prices on flights from San Francisco to London?

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to London?

What is the Hacker Fare option on flights from San Francisco to London?

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to London?

Top airline flying San Francisco to London

Scores according to KAYAK customer reviews

7.2
TAP AIR PORTUGAL
Overall score based on 5,334 reviews
7.3
Boarding
7.2
Comfort
7.9
Crew
6.6
Entertainment
7.0
Food
Airline reviews
Read more about TAP AIR PORTUGAL

Book cheap flights from San Francisco to London (round-trip)

Airports
Origin
San Francisco
$324
only
$324
Destination
London
$324
only
$324
$627
only
$627
Sun, Oct 18
SFO
San Francisco Airport
LHR
London Heathrow Airport
17h 15m
Sun, Oct 25
LHR
London Heathrow Airport
SFO
San Francisco Airport
28h 30m
Trip: 8 days
Based on null reviews
Sun, Oct 18
SFO
San Francisco Airport
LHR
London Heathrow Airport
17h 15m
Wed, Nov 4
LHR
London Heathrow Airport
SFO
San Francisco Airport
30h 25m
Trip: 18 days
Based on null reviews
Thu, Nov 26
SFO
San Francisco Airport
LCY
London City
16h 00m
Thu, Dec 17
LCY
London City
SFO
San Francisco Airport
14h 35m
Trip: 22 days
Based on null reviews
Tue, Dec 1
SFO
San Francisco Airport
LCY
London City
14h 00m
Thu, Dec 10
LCY
London City
SFO
San Francisco Airport
14h 15m
Trip: 10 days
Based on null reviews
Sun, Oct 18
SFO
San Francisco Airport
LHR
London Heathrow Airport
18h 20m
Mon, Nov 2
LHR
London Heathrow Airport
SFO
San Francisco Airport
17h 00m
Trip: 16 days
Based on null reviews
Sun, Oct 18
SFO
San Francisco Airport
LHR
London Heathrow Airport
17h 15m
Sun, Nov 1
LHR
London Heathrow Airport
SFO
San Francisco Airport
27h 30m
Trip: 15 days
Based on null reviews
Tue, Dec 1
SFO
San Francisco Airport
LCY
London City
13h 55m
Thu, Dec 10
LCY
London City
SFO
San Francisco Airport
15h 20m
Trip: 10 days
Based on null reviews
Thu, Oct 15
SFO
San Francisco Airport
LCY
London City
15h 08m
Sun, Oct 25
LCY
London City
SFO
San Francisco Airport
24h 15m
Trip: 11 days
Based on null reviews
Sun, Oct 18
SFO
San Francisco Airport
LHR
London Heathrow Airport
18h 20m
Fri, Nov 6
LHR
London Heathrow Airport
SFO
San Francisco Airport
38h 45m
Trip: 20 days
Based on null reviews
Sun, Oct 18
SFO
San Francisco Airport
LHR
London Heathrow Airport
17h 15m
Fri, Nov 6
LHR
London Heathrow Airport
SFO
San Francisco Airport
28h 15m
Trip: 20 days
Based on null reviews
Mon, Nov 2
SFO
San Francisco Airport
LHR
London Heathrow Airport
20h 55m
Wed, Nov 18
LHR
London Heathrow Airport
SFO
San Francisco Airport
28h 30m
Trip: 17 days
Based on null reviews
Mon, Nov 2
SFO
San Francisco Airport
LHR
London Heathrow Airport
20h 55m
Wed, Nov 18
LHR
London Heathrow Airport
SFO
San Francisco Airport
30h 25m
Trip: 17 days
Based on null reviews
Mon, Nov 2
SFO
San Francisco Airport
LHR
London Heathrow Airport
22h 00m
Wed, Nov 18
LHR
London Heathrow Airport
SFO
San Francisco Airport
33h 20m
Trip: 17 days
Based on null reviews
Sun, Oct 18
SFO
San Francisco Airport
LHR
London Heathrow Airport
17h 15m
Sun, Oct 25
LHR
London Heathrow Airport
SFO
San Francisco Airport
27h 30m
Trip: 8 days
Based on null reviews
Mon, Nov 2
SFO
San Francisco Airport
LHR
London Heathrow Airport
16h 50m
Wed, Nov 18
LHR
London Heathrow Airport
SFO
San Francisco Airport
28h 30m
Trip: 17 days
Based on null reviews
Tue, Sep 29
SFO
San Francisco Airport
LHR
London Heathrow Airport
47h 05m
Tue, Oct 6
LHR
London Heathrow Airport
SFO
San Francisco Airport
27h 25m
Trip: 8 days
Based on null reviews
Tue, Dec 1
SFO
San Francisco Airport
LCY
London City
16h 00m
Thu, Dec 10
LCY
London City
SFO
San Francisco Airport
16h 50m
Trip: 10 days
Based on null reviews
Fri, Oct 2
SFO
San Francisco Airport
LHR
London Heathrow Airport
18h 20m
Wed, Oct 7
LHR
London Heathrow Airport
SFO
San Francisco Airport
16h 40m
Trip: 6 days
Based on null reviews
Tue, Dec 1
SFO
San Francisco Airport
LCY
London City
14h 00m
Thu, Dec 10
LCY
London City
SFO
San Francisco Airport
15h 45m
Trip: 10 days
Based on null reviews
Fri, Oct 23
SFO
San Francisco Airport
LHR
London Heathrow Airport
17h 15m
Wed, Nov 4
LHR
London Heathrow Airport
SFO
San Francisco Airport
27h 50m
Trip: 13 days
Based on null reviews
Show more results

Book cheap flights from San Francisco to London (one-way)

Airports
Origin
San Francisco
$183
only
$183
Destination
London
$183
only
$183
$362
only
$362
$351
only
$351
Tue, Sep 29
SFO
San Francisco Airport
LHR
London Heathrow Airport
47h 05m
Based on null reviews
Fri, Oct 2
SFO
San Francisco Airport
LHR
London Heathrow Airport
18h 20m
Based on null reviews
Wed, Sep 9
SFO
San Francisco Airport
LGW
London Gatwick Airport
14h 25m
Based on null reviews
Wed, Sep 30
SFO
San Francisco Airport
LCY
London City
17h 00m
Based on null reviews
Tue, Sep 29
SFO
San Francisco Airport
LHR
London Heathrow Airport
47h 05m
Based on null reviews
Tue, Sep 15
SFO
San Francisco Airport
LHR
London Heathrow Airport
47h 05m
Based on null reviews
Wed, Oct 7
SFO
San Francisco Airport
LHR
London Heathrow Airport
34h 30m
Based on null reviews
Tue, Sep 29
SFO
San Francisco Airport
LHR
London Heathrow Airport
47h 05m
Based on null reviews
Tue, Sep 8
SFO
San Francisco Airport
LHR
London Heathrow Airport
47h 05m
Based on null reviews
Tue, Sep 22
SFO
San Francisco Airport
LCY
London City
16h 00m
Based on null reviews
Wed, Sep 30
SFO
San Francisco Airport
LCY
London City
19h 30m
Based on null reviews
Fri, Sep 18
SFO
San Francisco Airport
LHR
London Heathrow Airport
39h 40m
Based on null reviews
Thu, Aug 20
SFO
San Francisco Airport
LHR
London Heathrow Airport
54h 10m
Based on null reviews
Sun, Sep 6
SFO
San Francisco Airport
LGW
London Gatwick Airport
18h 00m
Based on null reviews
Wed, Sep 30
SFO
San Francisco Airport
LGW
London Gatwick Airport
13h 05m
Based on null reviews
Fri, Sep 18
SFO
San Francisco Airport
LHR
London Heathrow Airport
47h 05m
Based on null reviews
Thu, Sep 10
SFO
San Francisco Airport
LGW
London Gatwick Airport
14h 20m
Based on null reviews
Fri, Sep 11
SFO
San Francisco Airport
LHR
London Heathrow Airport
39h 40m
Based on null reviews
Wed, Sep 30
SFO
San Francisco Airport
LCY
London City
17h 00m
Based on null reviews
Fri, Sep 11
SFO
San Francisco Airport
LHR
London Heathrow Airport
47h 05m
Based on null reviews
Show more results
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

^
The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.
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