$388 Find Cheap Flights from the United Kingdom to San Francisco - 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 to San Francisco departing on 8/25. 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 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

Fri, Oct 16 - Mon, Oct 19
British Airways Logo
10:45 am - 1:50 pm
LHR
-
SFO
11h 05mnonstop
British Airways Logo
4:35 pm - 11:00 am
SFO
-
LHR
10h 25mnonstop
$604British Airways
Tue, Sep 1 - Sat, Sep 5
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
$607Scandinavian Airlines
Sat, Nov 14 - Tue, Dec 1
Virgin Atlantic Logo
6:30 am - 11:45 am
LHR
-
SFO
13h 15m
1 stop
Virgin Atlantic Logo
10:45 pm - 6:50 am
SFO
-
LHR
24h 05m
2 stops
$623Virgin Atlantic
Fri, Nov 20 - Thu, Nov 26
Virgin Atlantic Logo
8:25 pm - 11:45 am
LHR
-
SFO
23h 20m
1 stop
Virgin Atlantic Logo
6:15 am - 7:05 am
SFO
-
LHR
16h 50m
1 stop
$626Virgin Atlantic
Tue, Sep 1 - Sat, Sep 19
Lufthansa Logo
10:50 am - 7:00 pm
LHR
-
SFO
16h 10m
1 stop
Lufthansa Logo
1:50 pm - 11:55 am
SFO
-
LHR
14h 05m
1 stop
$628Lufthansa
Fri, Aug 21 - Sat, Sep 5
Lufthansa Logo
8:30 am - 3:15 pm
LHR
-
SFO
14h 45m
1 stop
Lufthansa Logo
1:00 pm - 7:25 am
SFO
-
LHR
10h 25mnonstop
$629Lufthansa
Wed, Sep 9 - Wed, Sep 23
Aer Lingus Logo
8:10 am - 3:55 pm
BHX
-
SFO
15h 45m
1 stop
Aer Lingus Logo
5:40 pm - 4:05 pm
SFO
-
BHX
14h 25m
1 stop
$758Aer Lingus
Mon, Aug 31 - Tue, Sep 8
Aer Lingus Logo
9:40 am - 3:50 pm
GLA
-
SFO
14h 10m
1 stop
Aer Lingus Logo
5:40 pm - 4:50 pm
SFO
-
GLA
15h 10m
1 stop
$767Aer Lingus
Sat, Dec 5 - Sun, Dec 13
KLM Logo
9:25 am - 11:45 am
SOU
-
SFO
34h 20m
1 stop
KLM Logo
1:50 pm - 8:10 am
SFO
-
SOU
34h 20m
1 stop
$877KLM
Sat, Dec 5 - Sun, Dec 13
KLM Logo
9:25 am - 11:45 am
SOU
-
SFO
34h 20m
1 stop
KLM Logo
1:50 pm - 8:10 am
SFO
-
SOU
34h 20m
1 stop
$879KLM
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 5 days.

In the last 5 days, the cheapest flight deal to San Francisco was found on the route from Edinburgh, at $604 return. The most popular connection is from London to San Francisco and KAYAK users have found round-trip deals for as low as $604 in the last 5 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 Tuesday where round-trip tickets can be as cheap as $757. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $898 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 round-trip 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 $547 on average for return flights. On the other hand, the most expensive months are June and December, where the average cost of tickets from the United Kingdom is $876 and $840 respectively. For one-way flights, the best month to travel is September with an average price of $558.

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 afternoon, when round-trip flights cost $755 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 $797.

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 $624 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 10 weeks before departure, which saves you about 21% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$388
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Edinburgh 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 5 days, the cheapest flight deal to San Francisco was found on the route from Edinburgh, at $604 return. The most popular connection is from London to San Francisco and KAYAK users have found round-trip deals for as low as $604 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 $780. The cheapest price found on KAYAK in the last 2 weeks cost $458 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 $580 or less one-way and $624 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.
7.8
KLMOverall score based on 1538 reviews
7.7Comfort
7.3Food
8.4Crew
7.2Entertainment
7.8Boarding
Airline reviews

The flight was 45 mins late leaving, we sat without a/c for some of this, 2nd Meal was a slice of pizza. Movies were good.

8.0 ExcellentAnonymous, Jun 2026
LHR - AMS
Read more KLM reviews

The flight was 45 mins late leaving, we sat without a/c for some of this, 2nd Meal was a slice of pizza. Movies were good.

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

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

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.

We left one hour late because of technical difficulties. The economy comfort seats are great for the price. The crew was mediocre, they do not provide a pleasant experience, they just deliver food and drinks and give orders, not very amicable, no service and hospitality focus.

There was a piece of plastic baked into my buttermilk biscuit! I have a pictures. The flight attendants in first class were really apologetic, and tried to rectify the situation. I I am very appreciative that they were able to give me some packets of pretzels and gummy bears. I understand they don't personally handle the food until warming it up so I know it wasn't their fault. I don't know whether it was a newer aircraft, or different food packaging, but I was happy that when the food was being warmed up - it didn't smell like plastic. Jokes on me with finding plastic in my food.

United was excellent. We had very good experience flying the carrier. Certainly. We will opt to fly them for sure. Lufthansa is out.

The seat that I got this time is really good.

Excellent flight. On time. Great staff. Clean and crisp cabin.

The Manila airport was under renovation so there was no business class lounge. The double security check was disorganized and the flight attendants were grouchy.

Flight attendants on United are the worst in the business. Can’t be bothered to provide even basic levels of service and are as rude as anyone can get. This flight was not an exception to that rule.

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.

Boarding was fine, difficult to understand the guy over the speaker though so we were unsure when exactly to board until they updated the monitor by the gate. Flight itself was fine, nice flight attendants, seats were comfortable enough, good selection of entertainment on the screens. Other airlines at a similar price point have included wifi though, at a minimum messaging, for free, so that was a little disappointing to not have that. But otherwise fine. Food was pretty decent, nice hot meal, good drink selection, nice snacks. Bathrooms were ok, could've been cleaned a little more often, but they were never bad.

OK overall. Flight was delayed Crew on flight was good

On time, only a little turbulence, very competent and caring attendants. Clear information.

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.

Excellent long haul experience really enjoyed using Dublin pre-immigration

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!

I was very happy with everything, thank you for the smooth flight ✈️

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

Entertainment system is old. Food can be tastier Need to provide toothbrush and toothpaste at least when asked.

This was the best carrier, comfort, service, good food, on time experience on a long haul flight. New, clean, quiet, smooth aircraft!!!

The plane was clean and the staff courteous and professional. The seat bottom was uncomfortable but only after many hours. It had a pressure point that left me a small bruise on my right leg (very surprising). The pasta was terrible (hard on the edges sticking out and soggy on the bottom edges) but I guess that's how it comes out in a microwave (?). The entertainment was glitching and shutting off every 20 minutes or so but, in the end, we made it home safely with very little turbulence and that's what really matters.

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.

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.

It was good although our flight to the UK was cancelled and rescheduled for two days later. This was after we were already seated on the plane. We missed the first leg of our trip. BA did put us up at a hotel and paid for our meals but we lost our hotel costs in Glasgow.

I am a 25+ years American Airlines member. British Airways is simply above and beyond in every customer satisfaction category.

The crew were good. The flight was on time. The entertainment choice was ok. But the food was bad, tasted and texture were awful.

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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