Find Cheap Flights from San Francisco Bay Area to the United Kingdom – Compare and Save

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Good to know - Cheap tickets from San Francisco Bay Area to the United Kingdom

Low season

January
Best time to beat the crowds (22% less expensive on average)
Most popular time to fly (18% more expensive on average)

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

Insights shared by verified travellers who flew the route from San Francisco Bay Area to the United Kingdom 
Verified travelerFlew with British Airways-Dec 2025
If not getting off in London make sure you have enough time to get to your connecting gates
Verified travelerFlew with Iberia-Jan 2026
Buy your flight directly from the airline because the cancellation process is purgatory
GeraldFlew with Virgin Atlantic-Jun 2025
Virgin Atlantic uses terminal 3. Much faster clearing customs than terminal 5
Verified travelerFlew with American Airlines-Jun 2025
Large number of passengers on the flight so arrive early to the airport and to the boarding gate
PallaviFlew with British Airways-Apr 2025
Eat at the lounge first so you are not stuck eating overcooked cheese ravioli
TapanFlew with British Airways-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 for booking flights from San Francisco Bay Area to the United Kingdom

  • How does KAYAK find such low prices on flights from San Francisco Bay Area 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 Bay Area 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 Bay Area to the United Kingdom?

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

  • What is the Hacker Fare option on flights from San Francisco Bay Area to the United Kingdom?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from San Francisco Bay Area 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 Bay Area 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 Bay Area to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines fly most frequently to the United Kingdom?

    San Francisco Bay Area and United Kingdom are connected by different airlines. The airlines that fly that route the most regularly are Air New Zealand (42 flights per week), Air Canada (28 flights per week), and United Airlines (28 flights per week).

  • How many airports are there in the United Kingdom?

    There are 40 airports in the United Kingdom. The busiest airport is London Heathrow Airport (LHR), with 49% of all flights arriving there.

  • Which is the cheapest airport to fly into in the United Kingdom?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in the United Kingdom is London Heathrow Airport (LHR), with an average flight price of £469.

  • What is the cheapest day to fly to the United Kingdom?

    Based on KAYAK data, the cheapest day to fly to the United Kingdom is Wednesday when return tickets can be as cheap as £612. On the other hand, the most expensive day to fly is Tuesday, when return prices are £900 on average.

  • What is the cheapest time of day to fly to the United Kingdom?

    The cheapest time of day to fly to the United Kingdom is generally in the morning, when retur flights cost £585 on average. Morning departures are around 16% cheaper than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally in the afternoon, which is peak travel time and where the average cost of a ticket is £883.

  • What is the cheapest flight to the United Kingdom?

    The cheapest ticket to the United Kingdom from San Francisco Bay Area found in the last 5 days was to London Heathrow Airport, at £495 return. The most popular route is San Francisco (SFO) to London Heathrow Airport (LHR) and the cheapest return ticket found on this route in the last 5 days was £495.

  • What is the cheapest month to fly from San Francisco Bay Area to the United Kingdom?

    The cheapest month for flights from San Francisco Bay Area to the United Kingdom is February, when tickets cost £291 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is £554 and £430 respectively.

  • How far in advance should I book a flight from San Francisco Bay Area to the United Kingdom?

    To get a below-average price on a flight from San Francisco Bay Area to the United Kingdom, you should book around 5 weeks before departure, which saves you about 9% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

  • How many cities have direct flights to the United Kingdom?

    From San Francisco Bay Area, there are direct flights to the United Kingdom from one city. This city is San Francisco and there are 423 direct flights each week.

  • How many direct flights to the United Kingdom are there each day?

    There are around 61 direct flights from within San Francisco Bay Area to the United Kingdom every day. Most flights (65%) depart in the afternoon.

  • How many direct flights to the United Kingdom are there each week?

    Each week there are around 423 direct flights from within San Francisco Bay Area to the United Kingdom. The most common day for departures is Friday, with 15% of flights taking off on this day.

  • How long is the flight to the United Kingdom?

    An average direct flight from San Francisco Bay Area to the United Kingdom takes 18h 07m, covering a distance of 5218 miles. The shortest route is San Francisco (SFO) to London Heathrow Airport (LHR) with an average flight time of 10h 15m.

  • How many long-haul flights are there to the United Kingdom each week?

    There aren’t any medium-haul (3-6 hour flight duration) or short-haul (up to 3 hour flight duration) flights to the United Kingdom. Instead, there are 423 long-haul flights (6-12 hour flight duration), with the most arriving from San Francisco.

  • What are the most popular destinations in the United Kingdom?

    Based on KAYAK flight searches, the most popular destination is London (90% of total searches to the United Kingdom). The next most popular destinations are Edinburgh (4%) and Manchester (1%). Searches for flights to Southampton (1%), to Newcastle upon Tyne (1%), and to Birmingham (1%) are also popular.

Reviews of the top 5 airlines flying from San Francisco Bay Area to the United Kingdom

 
Need help choosing which airline to fly with from San Francisco Bay Area to the United Kingdom? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1594 reviews
7.4Food
7.7Comfort
7.2Entertainment
7.8Boarding
8.4Crew
Airline reviews

25 mins late. The flight attendants were chatting and laughing loudly at the rear, which was rather unpleasant.

6.0 GoodDahko, Oct 2026
Read more KLM reviews

25 mins late. The flight attendants were chatting and laughing loudly at the rear, which was rather unpleasant.

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

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

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

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

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

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

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

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

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

Food was okay. Seats were a bit cramped. In flight entertainment headphone socket didn't work on my seat. Wifi was great, so I was able to stream on my iPad

Selection of movies didn't include recent box office hits. Food was average not great. English sparkling wine is not drinkable. Otherwise, everything was great.

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

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

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

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

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

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

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

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

Awful customer service. What you are told 100% depends on who you talk to.

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

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

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

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

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

Punctual, smooth flight. Crew excellent and cabin very clean. Paid for WiFi but once you close out you cannot get back in even if you paid for entire flight.

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

Seats a little to soft on the SFO DUB flight

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

Seats are uncomfortable and left me in pain in my tailbone area. I got about one hour of sleep.

Delay of two hours due to some mechanical issue. Staff was wonderful and the pilot did let us know what was going on.

Food was very bad Crew was not so welcoming. Chairs was so uncomfortable

I was very disappointed with my experience at the United Airlines baggage check. The representative was rude and unhelpful. I was required to remove approximately 1.5 pounds from my two checked bags, even though it was a very small amount over the limit. The interaction was unnecessarily unpleasant, and I expected much better customer service. I hope United will review this incident and provide additional customer service training to its staff.

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

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

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

The trip was very smooth. Flight crew were very friendly and efficient.

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

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

I really enjoyed the flight…and food and the hospitality but didn’t get the food I requested for.

I washed attendant for assistance and she never got back to me. I asked her a second time and she said she would check. She never did. The flight was over an hour late taking off No food service was offered despite over 4 hours on the flight

A/C temp. was way too cold during the flight.

Boarding from the SFO lounge is a big improvement. Although the first class dining room inside the lounge is becoming very crowded.

Spent unnecessary hours on phone calls to resolve small error on one of the passengers name... It was extremely stressful and time consuming... Not great... Also all 4 members of the family: 2 parents/ 2 teenagers were allocated separate seats (even separate floors... Not great...

I was booked in Premium Economy and never given a chance to choose to purchase my own seat. Ended up with a middle seat, which was very difficult for me. The airline then left my bag in London so when I arrived in Instanbul it was not there. They delivered it to me the next day but many valuable items had been stolen. I've been flying with BA for years and this was the first time I had such a bizarre and bad experience with them.

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.

Wish the food and overall service was better. They treat Business class passengers same as economy

More options for your flight to the United Kingdom

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