$312 Find Cheap Flights from San Francisco to the United Kingdom

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 9/14. 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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Flight Deals

Cheap Flights from San Francisco to the United Kingdom

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
London
London1 stop$885
Edinburgh
Edinburgh2 stops$1,166
Manchester
Manchester2 stops$774
Birmingham
Birmingham1 stop$773
Belfast
Belfast1 stop$874
Inverness
Inverness1 stop$744
Bristol
Bristol1 stop$1,066
Aberdeen
Aberdeen1 stop$852
Leeds
Leeds2 stops$912
Liverpool
Liverpool1 stop$1,192
Cardiff
Cardiff1 stop$984
Exeter
Exeter2 stops$2,378
London
London1 stop$885
Edinburgh
Edinburgh2 stops$1,166
Manchester
Manchester2 stops$774
Birmingham
Birmingham1 stop$773
Belfast
Belfast1 stop$874
Inverness
Inverness1 stop$744
Bristol
Bristol1 stop$1,066
Aberdeen
Aberdeen1 stop$852
Leeds
Leeds2 stops$912
Liverpool
Liverpool1 stop$1,192
Cardiff
Cardiff1 stop$984
Exeter
Exeter2 stops$2,378

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 round-trip 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 round-trip flight deals from San Francisco to the United Kingdom

Wed, Aug 19 - Wed, Aug 26
Multiple Airlines Logo
5:40 pm - 9:15 pm
SFO
-
GLA
19h 35m
1 stop
Multiple Airlines Logo
3:40 pm - 12:20 pm
GLA
-
SFO
52h 40m
2 stops
$763Multiple Airlines
Mon, Aug 24 - Wed, Aug 26
Lufthansa Logo
2:40 pm - 9:25 pm
SFO
-
BHX
22h 45m
1 stop
Lufthansa Logo
5:55 pm - 7:00 pm
BHX
-
SFO
33h 05m
1 stop
$773Lufthansa
Mon, Aug 24 - Thu, Aug 27
United Airlines Logo
11:39 pm - 9:50 am
SFO
-
BHX
26h 11m
2 stops
United Airlines Logo
6:05 am - 3:22 pm
BHX
-
SFO
17h 17m
2 stops
$778United Airlines
Sun, Aug 23 - Tue, Aug 25
United Airlines Logo
6:00 am - 9:45 am
SFO
-
BHX
19h 45m
2 stops
United Airlines Logo
5:55 am - 7:49 pm
BHX
-
SFO
21h 54m
2 stops
$779United Airlines
Tue, Sep 8 - Tue, Oct 20
British Airways Logo
4:35 pm - 4:45 pm
SFO
-
GLA
16h 10m
1 stop
British Airways Logo
5:55 am - 1:50 pm
GLA
-
SFO
15h 55m
1 stop
$841British Airways
Tue, Sep 8 - Tue, Oct 20
British Airways Logo
7:30 pm - 7:35 pm
SFO
-
GLA
16h 05m
1 stop
British Airways Logo
9:10 pm - 1:50 pm
GLA
-
SFO
24h 40m
1 stop
$842British Airways
Sun, Aug 23 - Mon, Sep 7
Delta Logo
6:00 am - 4:00 pm
SFO
-
LGW
26h 00m
2 stops
Delta Logo
10:25 am - 4:23 pm
LGW
-
SFO
37h 58m
2 stops
$890Delta
Mon, Oct 5 - Fri, Oct 9
Virgin Atlantic Logo
1:45 pm - 6:30 pm
SFO
-
LCY
20h 45m
1 stop
Virgin Atlantic Logo
9:20 am - 8:18 pm
LCY
-
SFO
18h 58m
2 stops
$892Virgin Atlantic
Fri, Sep 4 - Tue, Sep 15
Virgin Atlantic Logo
3:05 pm - 4:00 pm
SFO
-
LGW
16h 55m
1 stop
Virgin Atlantic Logo
10:35 am - 6:00 pm
LGW
-
SFO
15h 25m
1 stop
$893Virgin Atlantic
Thu, Aug 27 - Fri, Sep 11
Delta Logo
2:00 pm - 4:00 pm
SFO
-
LGW
18h 00m
2 stops
Delta Logo
10:25 am - 6:00 pm
LGW
-
SFO
15h 35m
1 stop
$897Delta
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 3 days was to London, at $863 round-trip. 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 3 days was $863.

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 round-trip flights cost $883 on average. On average, there is no price difference when choosing to fly in the morning or the evening on this flight route. 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 $936.

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

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $1,121 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 October, when tickets cost $643 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $1,285 and $1,036 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.

For San Francisco to United Kingdom, Wednesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from United Kingdom back to San Francisco, the best deals are generally found on Tuesday, with Sunday being the most expensive.

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 the flight from San Francisco to the United Kingdom, you should book around 2 weeks before departure, which saves you about 10% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$312
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 18% increase in price.
Flight from San Francisco to Glasgow

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

Insights shared by verified travelers 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 travelers 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 round-trip 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 cheap flights to the United Kingdom

  • Looking for a cheap flight? 25% of our users found tickets from San Francisco to the following destinations at these prices or less: London $528 one-way - $1,017 round-trip

Reviews of the top 5 airlines serving 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.
7.9
DeltaOverall score based on 8421 reviews
7.8Comfort
7.2Food
8.1Boarding
7.8Entertainment
8.5Crew
Airline reviews

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

10.0 ExcellentTeresa, Apr 2026
SMF - LAX
Read more Delta reviews

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

N Everything was perfect from boarding to assistance to baggage in Tampa

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I took seat 15A in anticipation of window seat, there is no window.

Flight late, the waited for a long time for “personal” to arrive at gate to dock the plane in Rochester. So annoying. This flight was expected, why aren’t personel available for the jet bridge?

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

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

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.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

Flight itself excellent, but delayed so missed connection & got to destination 2 hrs later

Smooth quiet flight take off and landing both excellent. Food was mediocre. Boarding at gate was disorganized and unacceptable.

Very good trip. Nice clean aircraft. Helpful and friendly crew.

Crew members Grainne and Karen were extremely rude and unprofessional

I am very disappointed in that KAYAK sold me this flight as a business class it was not a business class. It was a regular economy class ticket. This was not Art Linus mistake. It was kayaks.

Crew was friendly and seats were comfortable. The connection however there were no free snacks or drinks.

Our flight from Dublin to Coruna did not exist any more. Apparently it was cancelled in February and I was not advised, nor was I offered any flights for rebooking. Happily Aer Lingus found another flight to another city in Spain that was 500 miles from Coruna; I had to pay for a hotel overnight and a revise my rental car that incurred additional costs, and I did not get to Coruna for another 24 hours. I was not at all impressed with Kayak or Chatdeal or Hertz.

OK overall. Flight was delayed Crew on flight was good

Late late late. Delayed and arrived an hour late for a 1 hour 45 minute connection. Every time. Poor record for this company. I try to fly any other carrier first.

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!

Poor. Plane left EWR late hence missed connecting flight in Dublin. No pro active info from flight staff on connection, only when probed a couple of lies on where we would dock, and on lilelyhood catching connecting flight. Lies as they will have known our EWR-DUB would be parked furthest away from the transit spit - lying it would be next to the AMS flight.

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.

Check-in in SAN was long. ORD was good. Flight delayed On board crew was ok. No warmth or personality. LHrR barely made connection

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

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

Information on your arrival and departure airports