£209 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 12/10. 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 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£515
Manchester
Manchester2 stops£570
Edinburgh
Edinburgh1 stop£548
Birmingham
Birmingham2 stops£582
Belfast
Belfast1 stop£654
Bristol
Bristol1 stop£704
Aberdeen
Aberdeen1 stop£632
Liverpool
Liverpool1 stop£671
Leeds
Leeds2 stops£667
Inverness
Inverness2 stops£628
Newquay
Newquay1 stop£1,079
Cardiff
Cardiff1 stop£875
Exeter
Exeter2 stops£3,878
London
London2 stops£515
Manchester
Manchester2 stops£570
Edinburgh
Edinburgh1 stop£548
Birmingham
Birmingham2 stops£582
Belfast
Belfast1 stop£654
Bristol
Bristol1 stop£704
Aberdeen
Aberdeen1 stop£632
Liverpool
Liverpool1 stop£671
Leeds
Leeds2 stops£667
Inverness
Inverness2 stops£628
Newquay
Newquay1 stop£1,079
Cardiff
Cardiff1 stop£875
Exeter
Exeter2 stops£3,878

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

Wed, 16 Sep - Mon, 21 Sep
Multiple Airlines Logo
16:35 - 21:55
SFO
-
LGW
21h 20m
2 stops
Multiple Airlines Logo
14:30 - 13:35
LGW
-
SFO
31h 05m
2 stops
£515Multiple Airlines
Thu, 8 Oct - Thu, 22 Oct
Multiple Airlines Logo
16:30 - 23:00
SFO
-
LTN
22h 30m
2 stops
Multiple Airlines Logo
17:30 - 14:30
LTN
-
SFO
29h 00m
2 stops
£516Multiple Airlines
Mon, 11 Jan - Wed, 20 Jan
British Airways Logo
20:35 - 15:10
SFO
-
LHR
10h 35mdirect
British Airways Logo
11:45 - 14:55
LHR
-
SFO
11h 10mdirect
£543British Airways
Mon, 9 Nov - Wed, 11 Nov
United Airlines Logo
14:45 - 11:50
SFO
-
LHR
13h 05m
1 stop
United Airlines Logo
09:00 - 16:30
LHR
-
SFO
15h 30m
1 stop
£545United Airlines
Mon, 9 Nov - Wed, 11 Nov
United Airlines Logo
16:40 - 11:15
SFO
-
LHR
10h 35mdirect
United Airlines Logo
09:00 - 16:30
LHR
-
SFO
15h 30m
1 stop
£545United Airlines
Tue, 12 Jan - Sat, 16 Jan
British Airways Logo
20:35 - 15:10
SFO
-
LHR
10h 35mdirect
British Airways Logo
11:45 - 14:55
LHR
-
SFO
11h 10mdirect
£559British Airways
Mon, 23 Nov - Wed, 25 Nov
Lufthansa Logo
21:40 - 21:00
SFO
-
LHR
15h 20m
1 stop
Lufthansa Logo
09:30 - 20:35
LHR
-
SFO
19h 05m
2 stops
£569Lufthansa
Tue, 24 Nov - Thu, 26 Nov
Lufthansa Logo
21:40 - 21:00
SFO
-
LHR
15h 20m
1 stop
Lufthansa Logo
20:15 - 12:35
LHR
-
SFO
24h 20m
2 stops
£576Lufthansa
Wed, 4 Nov - Thu, 19 Nov
Delta Logo
08:00 - 06:25
SFO
-
LHR
14h 25m
1 stop
Delta Logo
06:30 - 11:45
LHR
-
SFO
13h 15m
1 stop
£637Delta
Mon, 2 Nov - Thu, 19 Nov
Delta Logo
13:25 - 10:00
SFO
-
LHR
12h 35m
1 stop
Delta Logo
06:30 - 11:45
LHR
-
SFO
13h 15m
1 stop
£637Delta
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 5 days was to London, at £690 return. The most popular route is from San Francisco (SFO) to London Heathrow Airport (LHR), and the cheapest return airline ticket found on this route in the last 5 days was £690.

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 £557 on average. Morning departures are around 10% 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 £886.

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 £780 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 £494 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is £970 and £801 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 Thursday, 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 5% 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 season

January

Cheapest flight

£209
Best time to beat the crowds (22% less expensive on average)
Most popular time to fly (20% more expensive on average)
Flight from San Francisco to Edinburgh

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 £343 one-way - £758 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 1550 reviews
7.3Food
7.8Boarding
8.4Crew
7.2Entertainment
7.7Comfort
Airline reviews

The flight was excellent, the crew was super friendly. The only complaint I have is, 3 of my zipper handles were broken and there were 2 massive scratches on the back of my bag

4.0 Okayankit, Jul 2026
AMS - LHR
Read more KLM reviews

The flight was excellent, the crew was super friendly. The only complaint I have is, 3 of my zipper handles were broken and there were 2 massive scratches on the back of my bag

Had to cancel and rebook, KLM connection was cancelled prior to departure, ended up flying to Munich on non-Delta carrier.

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

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

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

The IFE was quite old, but it worked fine and the content was good. The cabin crew were excellent and the food was as also very good

The plane. Airbus A330-200. Comfortable for a 7-hour flight. Seats seemed to have more legroom. I was in row 17. Flight was operated by Delta but was better than expected.

Check in at the desk was very slow pus Security, although not Virgin issue at JFK was a nightmare. 50 minuet wait no time to explore airport and get last minuet gifts. total wait 1.5hours

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

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

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 crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

Super friendly and helpful staff, from check-in desk to cabin crew.

We had an unfortunate experience where we had to leave the aircraft after boarding, shortly before the scheduled takeoff time, and re-board. The reason given was that a passenger felt ill and had to cancel their plans and therefor their luggage had to be found and removed.

My only complaint is that the pocket in front of me was ripped and my things, like iPad and airline magazines, kept slipping to the floor.

Flight delayed yet again. Crew apathetic and unhelpful re affect on connecting flight.

Cabin crew on our flight showed lack of any customer service gruff and acting annoyed if you asked anything and I mean anything Example a man on the seat over dropped his beer on my husbands blanket We asked if we could switch out blankets cabin crew Said. No we don’t have any extras OK well can you take the wet one Cabin crew looked disgusted and annoyed Took it no OK or yes just a growl

The pilot was late so we didn’t take off til almost 2 hours late.

It was a short, comfortable flight. It did leave an hour late due to the pilot having to be replaced (family emergency) but that didn’t inconvenience myself & my friend. The situation was explained, eventually.

Excellent communication from the staff. We actually arrived early. Very friendly and professional staff.

No extra snacks were available. Meals quality is terrible. Crew was not friendly.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Waited for our plane from HNL so we didn't miss connection. AMAZING Service for that, then really clean plane. Nice airline attendants.

Old plane with broken interiors, unclean restrooms and non attentive crew.

The infotainment system is liking compared to Airlines like Emirates Etihad Singapore Qantas

Food was mediocre, but as expected in economy class on an airline. Wrap was ice cold , my son’s served by a steward on the next aisle was warm . As expected, but at least heat the food up a bit. No frills, but it’s economy. Excellent free WiFi was a bonus

The check in and boarding process was smooth, and the flight was fine.

Overall good experience. But seats were small and uncomfortable for the price. Good entertainment, staff friendly and attentive.

This was the smoothest flight I've ever taken with any airline, including Aer Lingus. Typically, there are moments when I feel afraid, but from take off (miraculously seamless!) to cruise, to landing this was a perfect flight. Thank you!

The crew was friendly. The plane was comfortable. In-flight wifi didn't work well at all. The ride was quite turbulent but understandable given the weather.

Canceled my flight couple hours before takeoff. They could not find a decent re-routing and refused to pay for when i subjected alternative with Lufthansa.

Seats a little to soft on the SFO DUB flight

Terrible leg room - I’m 5’3” and my knees were touching the seat in front of me. When the person sitting in front of me leaned back, there was about 15 inches of space between my head and the TV screen which made it awkward to view movies. Last year they had decent food, but this year the only tasty item on the trip was dessert.

Amenity kits were never handed out. There was zero friendliness and assistance by crew. Food was uneatable. One drink was offered and no wine, with dinner or before or after. Cocktails and beverages were not encouraged and when I asked for water, none was given. Poorest, most cramped business class flight I’ve ever been on.

The first leg of my 2 flights were delayed, causing me to miss my second flight and have to stay the whole night in Dublin. Super upset with this experience, and I still need to figure out how to get compensated for this.

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

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

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

Crying baby the ENTIRE flight. Not your fault, but I paid 2700 for a premium economy ticket and it wasn't worth it. should have just stuck with coach. flight attendants very mediocre - minimal effort. Plane didn't seem very clean. Didn't have any cleansing wipes - most airlines give you this when you board. Flat screen scrolling didn't work. Toiletry case a joke - why bother at all?

Enjoyable flight, helpful crew everything was organized to accommodate passengers.

This was the second time on BA, food terrible, bathrooms gross,( granted, that was mostly due to the disgusting children urinating all over it)boarding was late and disorganized. No gate issued until last minute st Heathrow, bad system, caused undue stress. Seats were painful, that's what you get for traveling like a poor in economy, right BA? Should have been able to afford business or first class if you want to actually be able to walk upright without back pain after a trip.

The delay was not communicated via text and the person who helped with check in also didn’t inform me about the delay. I ended up missing my connection and it was a waste of 5 hours. The crew didn’t mention there would be someone at the gate informing of if I would be rebooked and there was no signage. Overall a very poor experience. The British Airways app was also very buggy, and didn’t work. I will avoid flying with British Airways when possible.

Cancelled flight minutes before boarding. Rescheduled flight was two days later

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

Information on your arrival and departure airports