£233 Find Cheap Flights from San Francisco to the United Kingdom – Compare and Save

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 the United Kingdom departing on 15/9. 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.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from San Francisco to the United Kingdom

Cheapest return prices found by our users on KAYAK in the last 72 hours
London
London2 stops£675
Manchester
Manchester2 stops£524
Edinburgh
Edinburgh1 stop£879
Birmingham
Birmingham1 stop£623
Belfast
Belfast1 stop£640
Bristol
Bristol1 stop£610
Aberdeen
Aberdeen1 stop£642
Liverpool
Liverpool1 stop£601
Leeds
Leeds2 stops£666
Inverness
Inverness1 stop£555
Newquay
Newquay1 stop£831
Cardiff
Cardiff1 stop£592
Exeter
Exeter1 stop£984
London
London2 stops£675
Manchester
Manchester2 stops£524
Edinburgh
Edinburgh1 stop£879
Birmingham
Birmingham1 stop£623
Belfast
Belfast1 stop£640
Bristol
Bristol1 stop£610
Aberdeen
Aberdeen1 stop£642
Liverpool
Liverpool1 stop£601
Leeds
Leeds2 stops£666
Inverness
Inverness1 stop£555
Newquay
Newquay1 stop£831
Cardiff
Cardiff1 stop£592
Exeter
Exeter1 stop£984

Book Cheap San Francisco to the United Kingdom Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from San Francisco to the United Kingdom 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from San Francisco to the United Kingdom

Mon, 9 Nov - Thu, 12 Nov
Scandinavian Airlines Logo
16:45 - 12:15
SFO
-
MAN
35h 30m
2 stops
Scandinavian Airlines Logo
10:25 - 14:50
MAN
-
SFO
36h 25m
2 stops
£524Scandinavian Airlines
Tue, 18 Aug - Tue, 25 Aug
Multiple Airlines Logo
17:40 - 15:15
SFO
-
GLA
13h 35m
1 stop
Multiple Airlines Logo
16:05 - 12:20
GLA
-
SFO
52h 15m
2 stops
£583Multiple Airlines
Tue, 4 Aug - Tue, 1 Sep
Multiple Airlines Logo
17:40 - 18:30
SFO
-
MAN
16h 50m
1 stop
Multiple Airlines Logo
19:40 - 14:35
MAN
-
SFO
26h 55m
2 stops
£586Multiple Airlines
Tue, 8 Sep - Tue, 20 Oct
British Airways Logo
16:35 - 16:45
SFO
-
GLA
16h 10m
1 stop
British Airways Logo
08:35 - 17:40
GLA
-
SFO
17h 05m
1 stop
£628British Airways
Wed, 23 Sep - Wed, 7 Oct
British Airways Logo
19:30 - 18:45
SFO
-
GLA
15h 15m
1 stop
British Airways Logo
07:30 - 13:50
GLA
-
SFO
14h 20m
1 stop
£628British Airways
Wed, 5 Aug - Wed, 19 Aug
Virgin Atlantic Logo
15:05 - 13:40
SFO
-
BHX
14h 35m
1 stop
Virgin Atlantic Logo
05:55 - 11:45
BHX
-
SFO
13h 50m
1 stop
£666Virgin Atlantic
Mon, 23 Nov - Mon, 30 Nov
Virgin Atlantic Logo
15:40 - 15:45
SFO
-
LGW
16h 05m
1 stop
Virgin Atlantic Logo
16:45 - 13:25
LGW
-
SFO
28h 40m
1 stop
£677Virgin Atlantic
Sun, 2 Aug - Tue, 18 Aug
United Airlines Logo
19:50 - 14:10
SFO
-
LHR
10h 20mdirect
United Airlines Logo
10:35 - 13:35
LHR
-
SFO
11h 00mdirect
£678United Airlines
Fri, 21 Aug - Wed, 9 Sep
United Airlines Logo
13:05 - 07:25
SFO
-
LHR
10h 20mdirect
United Airlines Logo
10:35 - 13:35
LHR
-
SFO
11h 00mdirect
£680United Airlines
Wed, 16 Sep - Fri, 2 Oct
KLM Logo
13:45 - 08:35
SFO
-
SOU
34h 50m
1 stop
KLM Logo
09:05 - 20:18
SOU
-
SFO
19h 13m
2 stops
£752KLM
Booking Insights

KAYAK's insights & trends for San Francisco to the United Kingdom flights

Get data-powered insights and trends into flights from San Francisco to the United Kingdom to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest San Francisco to the United Kingdom flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to the United Kingdom from San Francisco found in the last 72 hours was to London, at £658 return. The most popular route is from San Francisco (SFO) to London Heathrow Airport (LHR), and the cheapest round-trip airline ticket found on this route in the last 5 days was £658.

What is the cheapest time of day to fly to the United Kingdom?

The average price for all round-trip flights from San Francisco to the United Kingdom depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to the United Kingdom is generally in the morning, when retur flights cost £576 on average. Morning departures are around 1% cheaper than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally in the afternoon, which is peak travel time and where the average cost of a ticket is £772.

Can I save money by flying with a stopover from San Francisco to the United Kingdom?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 2 stops stopover the cheapest option at £777 on average.

What is the cheapest month to fly from San Francisco to the United Kingdom?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Francisco to the United Kingdom is February, when tickets cost £480 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of return tickets is £978 and £776 respectively.

What’s the cheapest day of the week to fly from San Francisco to United Kingdom?

The average price of all round-trip flights from San Francisco to the United Kingdom clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to United Kingdom on a Wednesday and more expensive on a Tuesday. On your return trip to San Francisco, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

How far in advance should I book a flight from San Francisco to the United Kingdom?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from San Francisco to the United Kingdom, you should book around 2 weeks before departure, which saves you about 11% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know - Cheap tickets from San Francisco to the United Kingdom

Low seasonJanuary
Cheapest flight£233
Best time to beat the crowds (21% less expensive on average)
Most popular time to fly (18% more expensive on average)
Flight from San Francisco to Glasgow

Flights from San Francisco to the United Kingdom: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from San Francisco to the United Kingdom 
Verified travelerFlew with British Airways
SFO
-
LHR
Dec 2025
If not getting off in London make sure you have enough time to get to your connecting gates
Verified travelerFlew with Iberia
SFO
-
LHR
Jan 2026
Buy your flight directly from the airline because the cancellation process is purgatory
GeraldFlew with Virgin Atlantic
SFO
-
LHR
Jun 2025
Virgin Atlantic uses terminal 3. Much faster clearing customs than terminal 5
Verified travelerFlew with American Airlines
SFO
-
LHR
Jun 2025
Large number of passengers on the flight so arrive early to the airport and to the boarding gate
PallaviFlew with British Airways
SFO
-
LHR
Apr 2025
Eat at the lounge first so you are not stuck eating overcooked cheese ravioli
TapanFlew with British Airways
SFO
-
LHR
Oct 2024
Great baggage policy in BA.. The worst part was experience at London Heathrow airport. Security was slow, too many people. Almost lost connecting flight even with 2 hours layover.

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from San Francisco to the United Kingdom?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to the United Kingdom.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from San Francisco to the United Kingdom is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to the United Kingdom?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from San Francisco to the United Kingdom with an airline and back with another airline.

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

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from San Francisco to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding a cheap flight from San Francisco to the United Kingdom

  • Looking for a cheap flight from San Francisco to the United Kingdom? 25% of our users found tickets from San Francisco to the United Kingdom for the following prices or less: London £370 one-way - £857 round-trip

Reviews of the top 5 airlines flying from San Francisco to the United Kingdom

 
Need help choosing which airline to fly with from San Francisco to the United Kingdom? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1527 reviews
7.3Food
7.8Boarding
8.4Crew
7.7Comfort
7.2Entertainment
Airline reviews

Brand new plane lots of room the snack was very flavourful and enjoyable

10.0 ExcellentBob, May 2026
MAD - AMS
Read more KLM reviews

Brand new plane lots of room the snack was very flavourful and enjoyable

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

There were no charge points for phones on the economy seats. The seats were comfortable overall. Food was okay.. flight was on time

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Empty seats next to me - wish it had been for a longer flight!!

Terrible last row seats many seats available but no offer to move to better seat

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Seating and zone. The minor I went with didn’t even seat close to me

My seat 3G did not go down fully and the buttons were not working properly

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

United has maintenance issues and can then never recover. No operations ability and simple issues always turn into multiple hours long cascading delays. Worst airline on earth.

I paid for a confirmed upgraded aisle seat and was moved to a center seat in the back of the plane at the last minute.

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

Lost of requested seat assignments. Lost my husband's meal choice

My service dog and I were asked to deplane just before they closed the door - clearly very last minute they couldn’t find the documentation that I have filled out many many times before that is for flying service animals. I purposely purchase 3seats (a whole row) since he is large and not all passengers want to sit next to a dog on a cross country flight. The plane departed with my husband on it!!! They made me fill out a hard copy of the same form and had to reschedule me on a later flight where they could find 3 seats together!! I’ve done this so many times before - clearly the error was on their part in a technology glitch - but really people - do better!! Very traumatic - and my husband had to wait for us when he landed ….so bad. Poor pup was confused and tired.

My flight time was changed without any notification to me which ruined my time sensitive plans so I ended up completely changing my travel plans and no reimbursement.

No screens or meal options. Freezing cold. Dirty seats. Left late.

I liked that my son and I were reseated next to each other (we had different bookings). I liked that it was a directg flight and mostly on time. I liked that you provided pillows and blankets. Flight attendants were generally courteous. The messaging through wifi did not work well. The food was not good. Seats are very narrow and I felt slightly claustraphobic in the window seat.

Some crew were unfriendly or in some cases just straight up rude.

Flight attendants were fine, seats a bit hard but I use a cushion for extra support. The only issue was it was a bit too cool and I needed to ask for and received and extra blanket. I survived!!!

Very few things and/or people are excellent. It was very good.

Food choices limited & not enticing Seats quite uncomfortable & difficult to control

Definitely get premium economy on a flight this long if you can. Your legs and while body will thank you.

Boarding was disorganized. The door to one to the toilets wouldn’t lock. The plane was shockingly cramped, and clearly used for domestic flights due to the menus for items to sell domestic travelers. United should be ashamed of its small seats, tiny unclean toilets, and money grubbing stance toward services, compared to Lufthansa, Emirates, and most international carriers United is awful.

Terrible. Lost our luggage for 4 days. Did not advise passengers there was a strike in Barcelona Airport and had zero personnel on hand at airport to advise passengers on where to go to file claims. We had to fend for ourselves. No assistance at all other than an online claims submission process that we had to find out about on our own.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Late flight Delays Poor service Poor staff Worst airline ever

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

Canceled flight late London to Florence. Help at airport very poor. Treated poorly. Had to sleep in the airport. Lost bags- still do not have them. Horrible. I should be reimbursed!

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

Flight delayed, connection was not at gate listed and so missed, staff were rude at Heathrow, phone tree stupid and difficult, took me 21 actual hours to reach my destination. Almost lost my hotel reservation after walking in a strange city alone after midnight because they would not put me up in a hotel at sfo or heathrow. I will never fly BA again and will tell all people and Instagram followers never to fly BA.

Wish the food and overall service was better. They treat Business class passengers same as economy

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

Awful it always is unfortunately is the only way to fly direct to london

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

Everything you need to know for your flight from San Francisco to the United Kingdom

Information on your arrival and departure airports