$390 Find Cheap Flights from the United Kingdom to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to San Francisco departing on 5/5. 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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These are the airlines KAYAK users have selected most often from within our search results for flights to San Francisco
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Cheap Flights from the United Kingdom to San Francisco

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from the United Kingdom to San Francisco 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 the United Kingdom to San Francisco

Tue, Sep 8 - Mon, Sep 21
Air Canada Logo
8:30 am - 3:24 pm
LHR
-
SFO
14h 54m
1 stop
Air Canada Logo
8:30 am - 8:35 am
SFO
-
LHR
16h 05m
1 stop
$551Air Canada
Tue, Sep 8 - Mon, Sep 21
British Airways Logo
2:30 pm - 5:40 pm
LHR
-
SFO
11h 10mnonstop
British Airways Logo
4:35 pm - 11:00 am
SFO
-
LHR
10h 25mnonstop
$569British Airways
Thu, Jul 2 - Wed, Jul 22
American Airlines Logo
2:10 pm - 12:58 am
LHR
-
SFO
18h 48m
1 stop
American Airlines Logo
8:18 am - 10:20 am
SFO
-
LHR
18h 02m
1 stop
$579American Airlines
Sun, Aug 30 - Sun, Sep 13
American Airlines Logo
12:00 pm - 9:16 pm
LHR
-
SFO
17h 16m
1 stop
American Airlines Logo
10:15 am - 11:05 am
SFO
-
LHR
16h 50m
1 stop
$586American Airlines
Mon, Sep 7 - Mon, Sep 21
Scandinavian Airlines Logo
6:40 am - 2:40 pm
LHR
-
SFO
16h 00m
1 stop
Scandinavian Airlines Logo
4:45 pm - 6:30 pm
SFO
-
LHR
17h 45m
1 stop
$594Scandinavian Airlines
Tue, Jun 30 - Sun, Jul 19
Delta Logo
5:45 pm - 11:59 pm
LHR
-
SFO
14h 14m
1 stop
Delta Logo
7:00 am - 6:45 am
SFO
-
LHR
15h 45m
1 stop
$626Delta
Wed, Jul 1 - Mon, Jul 20
Delta Logo
12:50 pm - 10:45 pm
LHR
-
SFO
17h 55m
1 stop
Delta Logo
1:38 pm - 3:35 pm
SFO
-
LHR
17h 57m
1 stop
$634Delta
Thu, Sep 10 - Thu, Sep 17
Lufthansa Logo
9:15 am - 3:20 pm
LCY
-
SFO
14h 05m
1 stop
Lufthansa Logo
1:55 pm - 5:55 pm
SFO
-
LCY
20h 00m
1 stop
$718Lufthansa
Mon, May 18 - Mon, May 25
Aer Lingus Logo
8:45 am - 3:50 pm
LBA
-
SFO
15h 05m
1 stop
Aer Lingus Logo
5:35 pm - 8:35 pm
SFO
-
LBA
19h 00m
1 stop
$863Aer Lingus
Tue, Jun 2 - Tue, Jun 9
Aer Lingus Logo
8:45 am - 1:18 am
LBA
-
SFO
24h 33m
2 stops
Aer Lingus Logo
5:40 pm - 8:35 pm
SFO
-
LBA
18h 55m
1 stop
$867Aer Lingus
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?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to San Francisco was found on the route from Manchester, at $551 return. The most popular connection is from Los Angeles to San Francisco and KAYAK users have found round-trip deals for as low as $95 in the last 3 days.

What is the cheapest day to fly to San Francisco?

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

Based on KAYAK data, the cheapest day to fly to San Francisco is Thursday where round-trip tickets can be as cheap as $719. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $823 on average.

What is the cheapest month to fly to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to San Francisco, 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 to San Francisco is February, where tickets cost $549 on average for return flights. On the other hand, the most expensive months are December and July, where the average cost of tickets from the United Kingdom is $844 and $835 respectively. For one-way flights, the best month to travel is September with an average price of $689.

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

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

The cheapest time of day to fly to San Francisco is generally in the evening, when round-trip flights cost $739 on average. The most expensive time of day to fly to San Francisco is generally in the morning, which is peak travel time and where the average cost of a ticket is $766.

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 $721 round-trip.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to San Francisco, 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, you should book around 4 weeks before departure, which saves you about 16% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$390
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 19% increase in price.
Flight from Manchester 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
LHR
-
SFO
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
LHR
-
SFO
Feb 2025
Make sure your free checked luggage is for outward and return flights.
Verified travelerFlew with United Airlines
LHR
-
SFO
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 3 days, the cheapest flight deal to San Francisco was found on the route from Manchester, at $551 return. The most popular connection is from Los Angeles to San Francisco and KAYAK users have found round-trip deals for as low as $95 in the last 3 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 $751. The cheapest price found on KAYAK in the last 2 weeks cost $530 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 $616 or less one-way and $721 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

 
See real verified KAYAK customer reviews for airlines flying to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from the United Kingdom to San Francisco. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
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.
7.4
United AirlinesOverall score based on 9637 reviews
6.6Food
7.7Boarding
7.1Entertainment
7.3Comfort
8.1Crew
Airline reviews

The flight was delayed from take off because only one runway was operational in San Francisco.

2.0 MediocreMartin, Apr 2026
EUG - SFO
Read more United Airlines reviews

The flight was delayed from take off because only one runway was operational in San Francisco.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

Checking in united could not figure out my star alliance gold. Baggage did not get marked priority and didn't receive boarding passes. When got to SFO lounge personal fixed everything Immediately

Meals were poor and service rendered on return flight was mediocre as compared to the flight we took to Germany earlier where the attendants were more attentive, energetic, and mindful of passengers' needs. Thumbs up to crew of UA 58. Thumbs down to UA 59..

Flight left on time, arrived early, pleasant staff provided water, coffee, etc. access to bathrooms was reasonable and were well maintained. blankets were available, lots of entertainment options. LUGGAGE SERVICE WAS GREAT. I got my one checked bag quickly and was able to make a bus connection for a 2 hour bus ride saving me from waiting another 1.5 hours.

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

we did a return flight from Paris CDG to SFO. This trip was much better than the departing flight SFO to CDG. The food was better quality, the crew was nicer, and the interior of the plane seemed cleaner.

Horrible service no Wi-Fi connection on both leg of the flight and they are refusing to fix bad service

We got to get extended leg room in Econ plus that was great. It was nice having our own dietary needs met with our meals, and the connecting flights had it as well. Only negative were the seats my bottom was/is really sore after a ten plus hour flight. Those seats are horrible, understandable for as many people use them. So we are going to purchase a gel seat pad.

Flight to Japan was was better across the board than the return to USA. Entertainment: Movie selection was old and not to my liking. Way too many woke choices. Not enough selections for sports or drama. Service: some of the crew were great. Not all. I paid for business class. a premium. Some of the crew thought they 'had' t do there job instead of wanting to serve and be polite. Food: Way to Japan was good. Way back to USA bad. Boarding: Wat out did not offer Business only; had to go thru general. If you pay for business, you should get business perks. Suggest you look for other than United for travel to Asia

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.

My issue is with the SkyWest terminal. The flight was not listed on the main airport flight screen list, and I had to do a Google search to locate the terminal and gate. We had to ask several airport employees where to locate the phantom gate. The airport did not provide adequate signage and was confusing. When we arrived, there was one vendor providing services that quickly closed, leaving zero options for food and drink while we waited hours for our delayed flight. The crew that assisted with check-in and boarding was VERY friendly.

Economy seats a bit small but other than that it was all good.

delayed flight stayed whole night at washington Dallas airport at seats , uncomfortable . i am senior citizen , very tired , worst travel.

No complimentary drinks or snacks offered on a 2 hour flight was disappointing but everything else went well

There was a 6h delay with limited updates . When we got to Manchester the bus took ages to get to arrivals and we missed our train, dinner reservation. Basically lost a whole day due to arrivals Lingus!!

All aspects were excellent - it helped that the flight was only 2/3 full and I had no one sitting in my row. The Pre-check (US Passport Control and Customs) in Dublin made everything so easy when we arrived in Chicago.

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

One of the best flight experiences I've have had in along time. Would fly with them again.

One of the best flight experience I have had in along time. Would fly with them again.

American delayed the flight for a crew rest period. The delay occurred late in the evening - the earliest i can find is 10:20 pm. With a 6 am flight anyone on the flight would have already have been asleep (unless you are insane, a vampire or on drugs) and at least for me i was already on the way to the airport at 445 am the next morning when i discovered they delayed the flight until 9 am. Given the incoming flight was in the air at 6 pm the evening before this should have been figured out a lot more timely that was there only crew to use. Just frustrating given there is no consideration for customer experience anymore in flying.

Flight: Started on time. Comfortable flight. Arrived on time. Crew: Very cordial and helpful. Drinks and snack was served with a smile. Overall enjoyed the trip. Regards, Hari Doss Chanchala Doss

To have arrived on time and not 3 hours late after having already spent $100 to change to an earlier flight, only to arrive back home close to the original flight time.

American Airlines is a miserable experience. It is predictably miserable, in the sense that every time I fly American, I brace myself for the certainty that it will be unpleasant and uncomfortable. But it is unpredictable in the sense that I never know if the flight will be on time or delayed nine hours (both happened to me this week). I never know if I will be able to sit in the seat that I selected when I purchased the ticket or if I will be told by Customer Service (!!!) that I must relocate from first class to a seat in the back of the aircraft with no explanation (both happened to me this week). Will the food be frozen and half defrosted, or scalding hot? Will the drinks be warm? Will the flight attendants be surly and mean? Will the toilets be cramped and foul? Will the seats be narrow and uncomfortable? Will there be a real electric outlet at the seat, or just an unreliable USB-2 port? Will there be enough seats in the boarding lounge or just a few? Will the boarding process be smooth and efficient, or will the gate agents mess it up and delay it needlessly for 30 or 40 minutes? Will the catering and cleaning crew be prompt or will they take an extra 30 minutes? Will the brakes on the aircraft work properly, or will the pilot delay takeoff for four hours while the ground crew attends to what can only be described as routine maintenance that should have been done the night before? I've eexperienced every one of these unpleasant things this year, 2026. The only thing I can reliably count on is that American will find a new way to make the experience of flying as miserable as they possibly can.

Wifi was spotty. Tray table was very dirty when I sat down.

The WiFi would not connect enough for me to do my actual work. It permaspooled, disconnected, said it was connected, then wouldn't open an email... it was frustrating. I am not a tall person, 5'4" - and I felt cramped with little room to reach into my bag under the seat in front of me. I feel sorry for anyone taller than me having to fly. the one positive thing I will add, is the overhead bins are roomy enough to manage more bags than other carriers.

Buying ticket from kayak instant booking was a huge mistake, never to be repeated again! The Kayak didn’t book the tickets directly, it handed it off to a third party Underpricer, that booked a code shared American Airlines flight operated by Cathay Pacific!! When managing the booking American Airlines would recognize the itinerary but wouldn’t let me do anything stating, the flight is operated by Cathay Pacific so go to their website. Cathay Pacific would recognize the itinerary, neither by reservation ID or ticket number…asking to reach out to the third party Underpricer….calling Underpricer resulted in no help like seat requests, mileage number or upgrade request, 15hr layover accommodation voucher guidance…so net in net avoid booking through three layers of intermediaries

Going non stop to lax like I paid for. Not stopping in MCI for gas. Too long of delays

Flight was on time. Cabin attendants made no recognition of my name or being an Advantage Executive Platinum member.

Delayed for mechanical and no updates on what was happening and how long the delay might be.

Service was excellent. Flight was only about half full, which meant we had tons of room to stretch out. Boarding area was nice and well organized, flight attendants were super friendly and attentive and we loved the 3 snacks!

My flight was cancelled, but it was not Kayak's fault. Kayak did require me to pay for the ticket twice to two different venders who paid Lufthansa. Kayak/Lufthansa owes me for the first booking I made first was fraudulent on the part of the subcontracting ticket seller. There will be litigation over this issue under the current passenger protection laws.

flight was half full, plenty of empty seats, was able to lie down across 4 seats, food was good, arrived on time

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

Terrible. Our flight was completely cancelled with no options to rebook until 4 days later.

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.

I like crew. They are friendly. The flight was delayed to take off for 1hr and that caused panic at Houston Airport to catch connecting flight due to security check delay. If it has reached on time I would have sufficient time in collecting bags and security check

How about changing the personal out to more friendly human beings? This team was pretty arrogant. No fun!!

Everything could have been better. What needed to be wrong with United went wrong

Excellent service. The crew goes above their way to make the customer comfortable.

OK, except for a cabin attendant's lack of attention.

efficient. on time. cabin crew were very professional and very nice to deal with. would definately fly BA again.

It was great overall. A few slight improvements could be made on the onboarding process at the Gates with announcements and clarity of communications (both at the gate and in flight). The movies in the entertainment options could be improved for bollywood, hollywood.

I alrady responded to this request, and expllaned at length that this was the worst flying experience in my 77 years. I will NEVER fly BA again.

Airbus A350 is poorly designed for wheelchair users and reduced mobility passengers. The angle of the pods makes it awkward to transfer. I was able to but I have ab stability. It could be a real challenge for people with more severe mobility impairments. You'd think Airbus would have come up with a solution for this or thought more about us disabled folks more when designing this aircraft.

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.

Everything was spectacular except the boarding. It was just a mob of people while all groups were called over the public address system.

The Britts are wonderful to fly with and the crew were very hospitable. Again, I really wish they had been able to retrieve my carryon bag from baggage claim before the flight so I could be in a less worrisome state of mind, but that's not on them. I completely understand. The window seats with the dimmable windows were very cool!

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.

food options were terrible. for a 10-hour flight, there should be 2 decent meals. Also, flight attendants should come around with drinks more than just at the meals.

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Everything you need to know for your flight to San Francisco

Information on the airport you'll fly into in San Francisco