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Cheap Flights from the United Kingdom to San Francisco

 
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Mon, Nov 23 - Sun, Nov 29
Scandinavian Airlines Logo
6:40 am - 2:50 pmLHR  London Heathrow-SFO San Francisco
16h 10m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
4:45 pm - 6:30 pmSFO  San Francisco-LHR London Heathrow
17h 45m1 stop Kastrup Copenhagen
$532Scandinavian Airlines
Thu, Dec 3 - Thu, Dec 10
Alaska Airlines Logo
2:45 pm - 9:48 pmLHR  London Heathrow-SFO San Francisco
15h 03m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
12:39 pm - 12:20 pmSFO  San Francisco-LHR London Heathrow
15h 41m1 stop Seattle/Tacoma Intl
$545Alaska Airlines
Sat, Nov 21 - Wed, Dec 2
Alaska Airlines Logo
2:45 pm - 8:43 pmLHR  London Heathrow-SFO San Francisco
13h 58m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
12:39 pm - 12:20 pmSFO  San Francisco-LHR London Heathrow
15h 41m1 stop Seattle/Tacoma Intl
$545Alaska Airlines
Mon, Jan 18 - Sun, May 16
British Airways Logo
11:45 am - 2:55 pmLHR  London Heathrow-SFO San Francisco
11h 10mnonstop
British Airways Logo
9:00 pm - 3:20 pmSFO  San Francisco-LHR London Heathrow
10h 20mnonstop
$549British Airways
Sun, Dec 6 - Sat, Dec 12
United Airlines Logo
7:40 am - 3:33 pmLHR  London Heathrow-SFO San Francisco
15h 53m1 stop Chicago O'Hare Intl
United Airlines Logo
6:35 am - 7:55 amSFO  San Francisco-LHR London Heathrow
17h 20m1 stop Chicago O'Hare Intl
$587United Airlines
Wed, Dec 23 - Wed, Dec 30
Scandinavian Airlines Logo
6:40 am - 2:50 pmLHR  London Heathrow-SFO San Francisco
16h 10m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
4:45 pm - 4:00 pmSFO  San Francisco-LHR London Heathrow
15h 15m1 stop Kastrup Copenhagen
$615Scandinavian Airlines
Sat, Dec 5 - Fri, Jan 15
Multiple Airlines Logo
9:00 am - 4:30 pmLHR  London Heathrow-SFO San Francisco
15h 30m1 stop Zurich
Multiple Airlines Logo
4:40 pm - 11:15 amSFO  San Francisco-LHR London Heathrow
10h 35mnonstop
$625Multiple Airlines
Sat, Jan 9 - Sat, Jan 16
Air Canada Logo
2:30 pm - 11:01 pmLHR  London Heathrow-SFO San Francisco
16h 31m1 stop Vancouver Intl
Air Canada Logo
11:25 am - 11:50 amSFO  San Francisco-LHR London Heathrow
16h 25m1 stop Vancouver Intl
$626Air Canada
Mon, Nov 23 - Tue, Dec 1
British Airways Logo
11:45 am - 2:55 pmLHR  London Heathrow-SFO San Francisco
11h 10mnonstop
British Airways Logo
5:25 pm - 11:50 amSFO  San Francisco-LHR London Heathrow
10h 25mnonstop
$627British Airways
Sat, Jan 9 - Sat, Jan 16
United Airlines Logo
7:40 am - 7:05 pmLHR  London Heathrow-SFO San Francisco
19h 25m1 stop Chicago O'Hare Intl
United Airlines Logo
12:20 pm - 1:30 pmSFO  San Francisco-LHR London Heathrow
17h 10m1 stop Los Angeles
$630United Airlines
Booking Insights

KAYAK's insights & trends for flights to San Francisco

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

What is the cheapest flight to San Francisco?

In the last 5 days, the cheapest flight deal to San Francisco was found on the route from Glasgow, at $532 return. The most popular connection is from London to San Francisco and KAYAK users have found round-trip deals for as low as $532 in the last 5 days.

What is the cheapest day to fly to San Francisco?

Based on KAYAK data, the cheapest day to fly to San Francisco is Wednesday where round-trip tickets can be as cheap as $742. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $874 on average.

What is the cheapest month to fly to San Francisco?

The cheapest month for flights to San Francisco is February, where tickets cost $634 on average for return flights. On the other hand, the most expensive months are December and May, where the average cost of tickets from the United Kingdom is $862 and $853 respectively. For one-way flights, the best month to travel is February with an average price of $593.

What is the cheapest time of day to fly to San Francisco?

The cheapest time of day to fly to San Francisco is generally in the afternoon, when round-trip flights cost $747 on average. The most expensive time of day to fly to San Francisco is generally in the evening, which is peak travel time and where the average cost of a ticket is $829.

What is a good deal for flights to San Francisco?

If you’re looking for cheap airfare to San Francisco, 25% of our users found tickets to San Francisco for the following prices or less: From London Heathrow Airport $685 round-trip.

How far in advance should I book a flight to San Francisco?

To get a below average price, you should book around 7 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low season

February

Cheapest flight

$409
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Glasgow to San Francisco

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

Insights shared by verified travelers who flew the route from the United Kingdom to San Francisco 
AntonFlew with United Airlines-Feb 2026
United has a cool arrival lounge in london but it is a bit hard to find, after customs look left
AlastairFlew with British Airways-Feb 2025
Make sure your free checked luggage is for outward and return flights.
Verified travelerFlew with United Airlines-Sep 2024
Download all your music. Add shows and movies to your queue. Bring short so you can relax. Bring long charger cords.

FAQs - booking San Francisco flights

  • Is it possible to hire a car at San Francisco International Airport?

    All the car hire companies at San Francisco International Airport are located at one central. Take the AirTrain Blue Line from the airport terminals to the Rental Car Centre where you can collect your car.

  • What hotels are near San Francisco International Airport?

    La Quinta Inn & Suites San Francisco Airport West is nearly 2 miles from San Francisco International Airport and has a 24-hour reception and a free shuttle bus for airport transfers. A slightly more luxurious option, also with free shuttle, is The Westin San Francisco Airport which is only a mile from the airport.

  • Are there shower facilities at San Francisco International Airport?

    There are private shower rooms for rent pre-security in the international terminal near Gate G for you to freshen up after your flight to San Francisco. No problem if you don’t have soap and shampoo, you can buy travel-size bath and toiletry products when you pay for your shower room.

  • What car parking facilities are available at San Francisco International Airport?

    Car parks exist at every terminal and are either paid hourly or are available for long-term stay. It is possible to pay for parking using cash or credit card, when you leave the parking space after your flight to San Francisco.

  • What is the cheapest flight to San Francisco?

    In the last 5 days, the cheapest flight deal to San Francisco was found on the route from Glasgow, at $532 return. The most popular connection is from London to San Francisco and KAYAK users have found round-trip deals for as low as $532 in the last 5 days.

  • How far is San Francisco Airport from central San Francisco?

    The distance between San Francisco Airport and downtown San Francisco is 11 miles.

  • What is the name of San Francisco’s airport?

    San Francisco is served by San Francisco Airport, also commonly referred to as San Francisco or San Francisco Intl. The airport code is SFO.

  • How much is a flight to San Francisco?

    On average, a flight to San Francisco costs $814. The cheapest price found on KAYAK in the last 2 weeks cost $481 and departed from London Heathrow Airport.

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

    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 to San Francisco.

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

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

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

    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 to San Francisco 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 to San Francisco?

    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 to San Francisco 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 San Francisco

  • Looking for a cheap flight? 25% of our users found flights on this route for $569 or less one-way and $685 or less round-trip.

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest San Francisco flight deals.
  • If you are booking flights to San Francisco, be sure to look at flights to San Francisco International Airport and Oakland International Airport, both of which are located in the San Francisco area. While most of the larger airlines fly into San Francisco International Airport, some airlines (such as British Airways) also fly from the UK into Oakland International. Other airlines (such as Norwegian) only fly into Oakland, but it is worth having a look to compare the prices.
  • Stressed about flying – look no further than San Francisco International Airport’s ‘Wag Brigade’. This Brigade consists of dogs (and now a pig) – brought in by the San Francisco Society for the Prevention of Cruelty to Animals – that wander around the terminals with their handlers to bring calm and happiness to nervous travellers. The animals, selected specifically for their temperament and suitability for airports, wear vests with the words “Pet Me!” written on them so you know who they are.
  • If you have a layover for four hours or more after your flight to San Francisco, take advantage of the time to venture into San Francisco and the Peninsula Bay area. This can be done easily on public transport – catching the BART train from the airport to, for example, Montgomery Street Station, will take you to Chinatown, the historic heart of San Francisco and Northbeach which, with its Italian influence, has a mixture of jazz clubs, galleries, restaurants and gelato shops. The trip will take you 30 minutes one way and tickets can be purchased at the station.
  • Fancy pampering yourself while you wait for your next flight, XpresSpa services, which exist at all terminals, are the perfect places to go. These spas offer treatments such as manicures, pedicures, massages and facials – a perfect way to treat yourself in between flights or before you head into the city.
  • For families travelling with kids there are a range of activities to keep them happy while in between flights. There are play areas in T2 and T3 or you can visit the Aviation Museum and Library which is free of charge and contains exhibitions about the history of air transport and the development of commercial flights. For children (and adults) who love aviation – this is a good place to spend some time.

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

 
Need help choosing which airline to fly with to San Francisco? 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 1595 reviews
7.4Food
7.8Boarding
8.4Crew
7.7Comfort
7.2Entertainment
Airline reviews

I wanted to give them a five‑star rating across the board, but they lost my luggage, and that really affected the experience.

8.0 ExcellentNikola, Oct 2026
Read more KLM reviews

I wanted to give them a five‑star rating across the board, but they lost my luggage, and that really affected the experience.

The flight itself was fine, food was expired and gross, staff were mostly amazing! KLM messed up rebooking for our first two flights that got cancelled and we almost didn’t make it to Amsterdam for an additional two days

I think I previously submitted my feedback about flight lead Katherine in a different field by mistake. Please see those comments. Comments for Hyd to AMS are it was good. The flight lead and service met expectations for satisfactory high quality service but the flight lead did not stand out as exceptional as did the leads on the other two flights so I don’t remember anything specific one way or the other besides the fact I was satisfied.

Flight lead was a gentleman with silver hair and he went out of his way to shake hands and interact with each passenger seated in business class. A medical emergency took place during our flight and he handled it with perfect poise and professionalism. He was gracious and confidently competent. Just what you want from a leader,

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

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

Seats were nice and comfy. Crew was polite and attentive. Business class is awesome and worth the money.

It was operated by Delta. Boarding took a long time. How difficult can it be? Overall decent trip. Liked the Salt Lake City airport. Better option than Chicago for transfers.

i’m The staff on my flight were amazing as always, beautiful professional staff, they do amazing job. the food ? room for improvement

The agents at the boarding desk were not very helpful, however the hostesses on board the flight were great, the food was ok, and there were lots for choices for entertainment. I was stuck in an middle row seat which was a pain on a full flight, but otherwise the flight was great.

Very helpful staff especially when helping with the missing baggage

OK overall. Flight was delayed Crew on flight was good

I love the direct flights. It saves a lot of hassle and allows immigration and customs in Ireland, making arrival much easier.

The space between seats was reduced even further. Could not even open the tray table fully and got compressed the moment the front guy reclined. For a long haul flight it was extremely uncomfortable.

Unfortunately the flight was delayed for 50 min. Just as we were about to board so that was a drag. The boarding was average. The bag check in process was new to us and efficient. And the flight itself was smooth- basically no turbulence.

Really lovely trip and flight. The flight staff were so accommodating and warm throughout!

Flight was great. Had to wait almost 100 minutes for luggage (some problem in the delivery). This may not be an Aer Lingus problem, but an SFO problem.

the room on the plane was good but that is because flight not sold the other three seat and I had room. the food in terrible.

Starlink internet made the flight time shrink and I was able to work.

The plane was so old. I paid a ridiculous amount to fly business and there was no internet for six hours! This can't be happening in 2026 and especially in cross country flights where there are a high volume of business travelers.

The food could have been better and the entertainment could have better movies or streaming.

My flight from Boston to SFO was fine. Crew was friendly and helpful. Food was mediocre. Fright from SFO to MNL was not as good. My flight attendant was friendly but didn’t seem to have a lot of experience. She seemed overwhelmed. Also, this was the only red eye business class flight I’ve flown which only served dinner 2 hours after takeoff in a 13 hr flight. When I woke up 1 hr before landing, everyone was eating so I assumed bkft was being served. I pushed my button for help and no one came so I approached my flight attendant and she said they don’t serve bkft but she gave me choices for lunch or dinner. I routinely fly business class but I was disappointed with the lack of service and attention I was given on this flight. Also, most airlines will offer a snack or coffee before bkft is served but this was not offered during this flight. Overall, it was disappointing.

The food could be much better. Also very unfortunate that most of business class seats were empty but I could not upgrade.

Bag got checked but I thought one personal item was guaranteed.

The flight attendants were very rude, beyond comprehension. I took a business class from London to SFO for the first time on United. When I asked for a second piece of bread during dinner, the serving attendant threw a 3rd bread on my plate and said, “here. You can have this one too”! I couldn’t believe the rudeness of the attendant. Most all attendants were very rude, unhelpful, sing the food was absolutely disgusting. Never fly United internationally in business class. My flight back to SFO was a nightmare!!

Our experience on United Airlines was extremely poor. The plane was extremely cold throughout our entire flight- which multiple people complained about- and we had to wait 2 hours to get a blanket which was too thin and barely helped warm us up. As well as this, none of the entertainment features were working so we had to sit through a roughly 10 hour flight with nothing to keep our attention, including the actual flight path screen. It was an extremely disappointing experience and I would hope that this gets fixed if we ever choose United Airlines again.

The senior flight attendants were amazing. Totally different vibe from other carriers. Easy 10 hour flight in Business Class. Great food. Good humor as well.

Liked Seat space in Premium Plus Disliked delay, poor management of boarding groups, missed meal at landing.

After flying on Icelandair to England and getting a greeting glass of champagne, free drinks and salmon I returned to the US on United for around the same price and got told immediately that I would have to eat a vegetarian meal because everything else was gone and every time I paused thinking in flight entertainment I got advertisements on the screen. On the Icelandair flight I had a great selection of documentary films and on United I was reduced to watching the Spider-Man movie. Guest which airline I look forward to flying again?

The flight from FRA to SFO was uncomfortable. The crew allowed people to change seats after boarding finished, but then made some people move back to their seats but not others, which resulted in my wife and I having to sit in two middle seats for an 11 hour flight. The entertainment system was not working well throughout the flight, and stopped working completely around hour 8.

Inflight food quality is definitely declining. Only one hot food was served and rest of were boxed meals. That’s not how was done before. Better to fly Asia or Qatar carriers for better service.

The seats on Lufthansa’s international business class on the A350-900 is the worst product in the market. Our chief purser was AMAZING though. She is the best FA I have had in many years.

I have very bad experience with United because Vince two weeks that I did not receive my luggage yet

Generally good. Not their fault but the design of the Boeing 747 had seating supports directly in line with my legs. So my legs always had to straddle this support which caused body misallignment. Such poor design from Boeing. There was no USB port for me to charge my phone. The screen touch control was very poor.

Best flight attendants ever! Very customer and service oriented, courteous, professional and helpful.

Never happened. Flight was delayed. Had to be re rojyed

The plane was very clean. The bathroom was clean as well. The land crew were very polite and informative and helpful. They informed me that there is a long way and challenging to go from international terminal to national terminal and in addition to getting my suitcases and going through customs and dropping them again for my second leg of trip which was San Francisco to Los Angeles . I have left knee issue and had a recent fall with aching muscles all over, the land crew suggested wheelchair help for me, God bless her. If I did not have help, I could not make it to my last terminal. Thank you UNITED AIRLINE!

Flight itself fine, big problem with KAYAK. Revised e-ticket sent in July stated departure LHR 10:55, arrival SFO 13:45. (a believable local arrival time given flight length and time difference). When we got to LHR there was no 10:55 flight to SFO and were advised that in fact flight LH2473 was arriving in MUNICH at 13:45pm, and that we would need to get a connecting flight arriving in SFO at 18:55 local time - over 5 hours later than expected. 1) you the booking agent made an error on the revised e-ticket you sent, omitting the Munich stopover and incorrect SFO arrival time. 2) I booked a DIRECT flight and 3) we had to cancel plans this end as a result, even though the team at LHR did a great job moving us to a later direct flight getting us in 2 hours earlier than the flight from munich would have.

Terrible we had to wait out in the cold for transfer bus to take us to the plane. Once we finally got on the plane seat had no cushioning not comfortable at all. Food was overcooked and dried out. I was skipped over when they served drinks I had to call them back to give me a drink with my food. Overall terrible experience this time. I have used BA before and never experienced service like this before. If this keeps up I will look for other options

My experience on this flight was good. The seat I had had a lot of leg room, but it was so close to the aisle that the flight attendants kept bumping into my visual monitor connected to my seat to watch tv.

We never made this flight due to the flight from Barcelona being delayed, which I have reviewed in a separate review. But I can tell you that the Delta Airlines flight that did get us home, I am extremely happy with them and their crew. The only one person that I would praise within the entire part of BA is the girl I spoke to in the call center in India. Who completely understood, was dedicated to a resolution and was a complete realist in the situation. Unlike some of the people who don’t care about the human element and stick you on a flight whenever. She got us home.

Generally very good. I think their service is better than some other big names I used to travel with. Their food variety is second to none - and you can place order beforehand. Their seating design is a bit awkward for service, I'd say. Flight attendants must be tall enough - long legs and arms - to reach the window seat passenger while crossing over the isle passenger. Also appreciated the variety on entertainment.

Lovely big plane. Excellent take off and landing. Cabin crew were so nice. Flight in time no delays

The crew has always been great on BA. They are very friendly and accommodating. I like that they have vegetarian options already in the menu. And the free wine is a nice perk.) I noticed (both directions of my trip) minor upgrades/ replacements needed on the plane itself (touch screen didn't work with touch; bathroom light didn't go on). However, this is one of my favorite airlines.

There was a delay for the San Francisco-London flight, but we were all informed via text and email. The staff was very friendly and nice and the food was good. I do recommend that the airline offer something without eggs or something vegan for the vegetarian meal option. A lot of Indians are lacto-vegetarian, while some could be allergic to eggs/dairy.

Audi visual not working for a whole group of seats in first class. How does a plane leave the main hub in such poor condition? How much that we can’t see so immediately is also compromised?

main meals are horrible but then you dont fly for the food

Great flight. One unique individual assisting in business class who should have not been there. Need more generic meals, not British centric.

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