SFO - LON
Find cheap flights from San Francisco to London from $536
This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to London departing on 17/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Cheap flight deals from San Francisco to London (SFO-LON)
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.Flights from San Francisco to London - Travel Insights & Trends
Get data-powered insights and trends into flights from San Francisco to London to help you find the cheapest flights, the best time to fly and much more.
What is the cheapest San Francisco to London flight route?
Our data shows that the cheapest route for a one-way flight from San Francisco to London cost $801 and was between San Francisco and London Heathrow Airport. On average, the best prices are found if you fly this route. The average price for a return flight for this route is $1,049.
What’s the cheapest day of the week to fly from San Francisco to London?
If you are looking for a flight deal from San Francisco to London, look for departures on Mondays and avoid leaving on a Wednesday, as it's usually the priciest day. When flying back from London, Tuesday is the cheapest day to fly and Saturday is the most expensive.
What is the cheapest month to fly from San Francisco to London?
The cheapest month for flights from San Francisco to London is October, where tickets cost $1,012 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,934 and $1,667 respectively.
How far in advance should I book a flight from San Francisco to London?
To get a below average price on the flight from San Francisco to London, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 21 days before departure.
Which airlines provide the cheapest flights from San Francisco to London?
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on WestJet ($644) and Lufthansa ($684). The cheapest round-trip tickets were found on United Airlines ($938) and Delta ($949).
Which airlines fly most frequently between San Francisco and London?
Virgin Atlantic connects San Francisco to London with up to 4 flights per day. British Airways also offers 3 flights per day, while United Airlines follows with 3 flights per day.
How many flights are there between San Francisco and London per day?
Each day, there are between 10 and 11 nonstop flights that take off from San Francisco and land in London, with an average flight time of 10h 24m. The most common departure time is 19:00 and most flights take off in the afternoon, while the most flights land at London Heathrow Airport. Each week, there are 76 flights. The most frequent day of departure is Tuesday, when 14% of all weekly flights depart. The fewest flights depart on a Saturday.
Which cabin class options are there for flights between San Francisco and London?
There are 2 cabin class options for the route. These are Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.
How long does a flight from San Francisco to London take?
A direct flight to London will take on average 10h 19m to travel the 13,878 km flying distance from San Francisco.
What’s the earliest departure time from San Francisco to London?
Early birds can take the earliest flight from San Francisco at 12:30 and will be landing in London at 06:55.
What’s the latest departure time from San Francisco to London?
If you prefer to fly at night, the latest flight from San Francisco to London jets off at 22:10 and lands at 16:30.
When to book flights from San Francisco to London
FAQs for booking flights from San Francisco to London
Top tips for finding a cheap flight from San Francisco to London
Prefer to fly direct from San Francisco to London?
Find which airlines fly direct from San Francisco to London, which days they fly and book direct flights.
Direct departures
San Francisco to London
Monday
Aer Lingus, Aeromexico, Air Canada, +15 more
Aer Lingus, Aeromexico, +16 more
14
15
Tuesday
Aer Lingus, Aeromexico, Air Canada, +15 more
Aer Lingus, Aeromexico, +16 more
14
15
Wednesday
Aer Lingus, Aeromexico, Air Canada, +15 more
Aer Lingus, Aeromexico, +16 more
14
15
Thursday
Aer Lingus, Aeromexico, Air Canada, +15 more
Aer Lingus, Aeromexico, +16 more
14
15
Friday
Aer Lingus, Aeromexico, Air Canada, +15 more
Aer Lingus, Aeromexico, +16 more
14
15
Saturday
Aer Lingus, Aeromexico, Air Canada, +15 more
Aer Lingus, Aeromexico, +16 more
14
15
Sunday
Aer Lingus, Aeromexico, Air Canada, +15 more
Aer Lingus, Aeromexico, +16 more
14
15
Direct returns
London to San Francisco
Monday
Aer Lingus, Aeromexico, Air Canada, +15 more
Aer Lingus, Aeromexico, +16 more
14
15
Tuesday
Aer Lingus, Aeromexico, Air Canada, +15 more
Aer Lingus, Aeromexico, +16 more
14
15
Wednesday
Aer Lingus, Aeromexico, Air Canada, +15 more
Aer Lingus, Aeromexico, +16 more
14
15
Thursday
Aer Lingus, Aeromexico, Air Canada, +15 more
Aer Lingus, Aeromexico, +16 more
14
15
Friday
Aer Lingus, Aeromexico, Air Canada, +15 more
Aer Lingus, Aeromexico, +16 more
14
15
Saturday
Aer Lingus, Aeromexico, Air Canada, +15 more
Aer Lingus, Aeromexico, +16 more
14
15
Sunday
Aer Lingus, Aeromexico, Air Canada, +15 more
Aer Lingus, Aeromexico, +16 more
14
15
Top airline flying from San Francisco to London
Try to humanize onboarding and take AI out. It's embarrassing and useless
Try to humanize onboarding and take AI out. It's embarrassing and useless
It was a busy flight and all the crew were very helpful and gracious
I always try to book flights that don’t charge for baggage. Yet I was charged $75 for this flight.
Overall good experience. Polite crew. Good foodandentertainment. Seats are small and bit congested though.
Horrible crowding on the seats, headphones provided did not fit or work in the entertainment center, seriously the most uncomfortable flight I have taken in a LONG time. The people in front of me were literally 5 inches from my face the entire flight. Did they change their seats recently? I remember it being tight but wow this was a whole new level. Also I am a 5'3" small woman so I can't even imagine a larger person dealing with that for 11 hrs.
Seat controls of lights were broken, and only 1 of the 2 seat TVs ever worked on the long flight. On the short flight there were no USB connections, on the long one they were difficult to access. Part of my meal was frozen, though the hot portion was good.
I ended up buying (for $340) "extra space" seats because I my flying partner was given a STY boarding pass, leading me to conclude that she was on standby and that we had to buy seats on the flight. I later learned that the flight was not sold out and that we could have gotten on as usual. To be honest, I felt swindled.
Lufthansa fails at mentioning no luggage when booking through points. We had to pay added fees to take checked bags to Europe for 2 weeks. The staff at check in were not helpful at all. told us "if we don't like it, then book another flight". Food was bad, they ran out of half the options. Vegetarian was terrible. The flight crew was nice, and tried to make it work ok.
I'm Canadian. I have the unfortunate experience of pretty not having the choice to fly with them. THEY ARE TERRIBLE.
The process overall was pretty seamless, and the crew were very friendly (especially Michael). Considering we booked expecting Lufthansa and the flight was operated by United, it was still a very good service and journey overall. The in-flight entertainment was great, with lots of quality options. One slight negative was that I had selected a vegetarian meal prior to flying, but received a vegan one. I think there should be more dietary options as it meant I missed out on some food that I would have preferred (and it seemed like the standard meals and snacks had a vegetarian option anyway). There was also a group of people who were moving around a lot and being generally disruptive at the quietest part of the flight, when the lights were off and most people were sleeping. I would have appreciated staff stepping in to encourage them to be mindful of others). Towards the end of the flight (which was very early in the morning in both time zones), the lights suddenly came on and breakfast was served. In my opinion, this was too early, and everyone was rudely awoken from sleep. After breakfast was cleared away, the lights went off again for about 45 minutes, allowing people to sleep some more. Then the lights came on again for landing. It seems like if they had served breakfast later, the lights on-lights off-lights on shenanigans could have been avoided, and people could have slept longer (and staff could have rested longer too).
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