C$ 267 Find Cheap Flights from London to California

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to California departing on 29/4. 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

KAYAK searches hundreds of travel sites at once for deals on flights to California

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to California, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to California, as well as popular online travel agencies
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Flight Deals

Best California Flight Deals from London

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Los Angeles
Los Angeles1 stopC$ 655
San Francisco
San Francisco1 stopC$ 469
San Diego
San Diego1 stopC$ 521
Palm Springs
Palm Springs2 stopsC$ 758
San Jose
San Jose2 stopsC$ 918
Los Angeles
Los Angeles1 stopC$ 655
San Francisco
San Francisco1 stopC$ 469
San Diego
San Diego1 stopC$ 521
Palm Springs
Palm Springs2 stopsC$ 758
San Jose
San Jose2 stopsC$ 918

Cheap Flights from London to California

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to California 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 London to California

Wed, 15 Apr - Mon, 4 May
WestJet Logo
8:10 p.m. - 12:10 p.m.
YXU
-
SFO
19h 00m
1 stop
WestJet Logo
6:00 a.m. - 4:45 p.m.
SFO
-
YXU
7h 45m
1 stop
C$ 469WestJet
Tue, 14 Apr - Mon, 4 May
Air Canada Logo
5:10 a.m. - 10:55 a.m.
YXU
-
SFO
8h 45m
1 stop
Air Canada Logo
7:30 p.m. - 11:43 a.m.
SFO
-
YXU
13h 13m
2 stops
C$ 471Air Canada
Fri, 29 May - Sat, 30 May
WestJet Logo
6:10 a.m. - 12:00 p.m.
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
6:00 a.m. - 4:45 p.m.
SFO
-
YXU
7h 45m
1 stop
C$ 473WestJet
Tue, 14 Apr - Tue, 5 May
Air Canada Logo
5:10 a.m. - 10:55 a.m.
YXU
-
SFO
8h 45m
1 stop
Air Canada Logo
8:05 a.m. - 9:38 p.m.
SFO
-
YXU
10h 33m
2 stops
C$ 476Air Canada
Tue, 14 Apr - Mon, 4 May
Air Canada Logo
5:10 a.m. - 12:30 p.m.
YXU
-
SFO
10h 20m
2 stops
Air Canada Logo
7:30 p.m. - 11:43 a.m.
SFO
-
YXU
13h 13m
2 stops
C$ 478Air Canada
Tue, 14 Apr - Tue, 5 May
Air Canada Logo
5:10 a.m. - 12:30 p.m.
YXU
-
SFO
10h 20m
2 stops
Air Canada Logo
8:05 a.m. - 9:38 p.m.
SFO
-
YXU
10h 33m
2 stops
C$ 484Air Canada
Wed, 6 May - Fri, 8 May
Delta Logo
6:10 a.m. - 2:10 p.m.
YXU
-
SAN
11h 00m
1 stop
Delta Logo
3:30 p.m. - 5:20 a.m.
SAN
-
YXU
10h 50m
1 stop
C$ 550Delta
Fri, 1 May - Fri, 8 May
United Airlines Logo
5:40 a.m. - 9:57 p.m.
YXU
-
SNA
19h 17m
2 stops
United Airlines Logo
9:05 p.m. - 11:43 a.m.
SNA
-
YXU
11h 38m
2 stops
C$ 666United Airlines
Fri, 1 May - Fri, 8 May
United Airlines Logo
12:20 p.m. - 7:20 p.m.
YXU
-
LAX
10h 00m
1 stop
United Airlines Logo
10:53 p.m. - 5:33 p.m.
LAX
-
YXU
15h 40m
2 stops
C$ 711United Airlines
Wed, 6 May - Fri, 8 May
Delta Logo
6:10 a.m. - 2:10 p.m.
YXU
-
SAN
11h 00m
1 stop
Delta Logo
3:30 p.m. - 5:20 a.m.
SAN
-
YXU
10h 50m
1 stop
C$ 724Delta
Booking Insights

KAYAK's insights & trends for London to California flights

Get data-powered insights and trends into flights from London to California to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from London to California?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to California, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London to California is June, when tickets cost C$ 317 (return) on average. On the other hand, the most expensive months are February and March, when the average cost of round-trip tickets is C$ 1,527 and C$ 1,288 respectively.

Good to know

Low seasonJuly
Cheapest flightC$ 267
Best time to beat the crowds (24% less expensive on average)
Most popular time to fly and prices are also 28% lower on average.
Flight from London to San Francisco

FAQs - booking California flights

  • How does KAYAK find such low prices on flights from London to California?

    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 London to California.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London to California 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 London to California?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from London to California 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 London to California?

    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 London to California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines flying from London to California

 
See real verified KAYAK customer reviews for airlines flying from London to California. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to California? 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 9440 reviews
8.1Crew
7.1Entertainment
7.7Boarding
7.3Comfort
6.6Food
Airline reviews

Hopped on time for the flight only to get deplaned and delayed another 2.5 hours.

2.0 MediocreMary Ann, Mar 2026
YYZ - EWR
Read more United Airlines reviews

Hopped on time for the flight only to get deplaned and delayed another 2.5 hours.

Terrible experience! delay 2 time and say i dont have ticket

It was amazing. I had several upgraded seats on my flight out. Everything went smooth with no delays.

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

Flight attendants were friendly & good service, food sucks, seats uncomfortable, not many Asian movies or shows flying from Hong Kong

Flight attendants had a little attitude. Food tastes no good.

Overall we had a good experience during our flight from San Francisco to Houston.

it was a very short flight so my expectations were low.

Very poor. The flight was delayed from Toronto because some forget to do there job . I got to my connecting gate in San Francisco 10 minutes before the departure.but this didn’t let me board even though the flight was still there for an other 30 minutes. The the gentleman at the unite airline desk told me that they usually wait for passengers but air Canada called and told them not to we I been rerouted to Manila instead of Hong Kong . In San Francisco they mad me check in my carryon bag . I was told the it will directly go yo ho chi minn cuyt but I was told that by the Vietnams airline desk that’s not there I’m 10 hours behind my scheduled flight and looks like I I’m going without baggage. I don’t have a chance of catching ..

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

As someone who never flies WestJet unless there is no other viable option I have to give this crew credit where credit is due. Extremely well done everyone.

Flight left on time. The crew was very friendly. I had to buy a proper meal. Small cookie and a drink just doesn’t cut it for a 4.5 hours flight.

Experience was good, the wifi hook up is somewhat tough

I didn't think about not having the right app for wifi because my connecting flight was with Westjet and when I took off from Seattle I was thinking I would use my wifi, but realized I couldn't on my Westjet app and I did not have Delta's app downloaded.

I will not be flying with westjet again. I was uncomfortable in my seat. The position made my back hurt so bad. My wife was able to fit the seatbelt around her with out an extension but was unable to put the tray table down or fit in the seat for that matter. Our bag was smashed and I spent two hours trying to fill out the application for a damaged bag before I gave up. The 80 photos I took would not work and nothing telling me the format to upload them as.. I made the mistake of unpacking the bag before taking photos so no claim for me. Next trip to Canada I will have to use air Canada.

My luggage was damaged 1 wheel was out I can't find it nowhere

Took 3 hours to check in and drop off our suitcases. Half of the passengers were still in line by boarding time. The computer systems and staff were very slow. Staff were also disorganized and kept allowing later flights to skip lines. Suitcases were piling on that several other passengers didn't get their suitcases. Then, we were sitting in the plane for 2 hours and were told that the flight was overbooked. We missed our connecting flight and had to fly the following day but with a stop over. Good thing ONE WestJet customer rep was pleasant and actually knew how to do her job when we wanted to rebook to a direct flight. Thank you to Kim at Toronto airport. Terrible experience at PUJ. Won't go back to Dominican Republic.

Loading was delayed multiple times, due to what seemed like boarding pass check system failures, or poor process. Additional delays due to plane congestion on the airport tarmac. All was made up by comfortable seating, good food and good in-flight entertainment.

Great seats, super comfortable, but no in flight entertainment which was a let down

Airplane is too small. Crew, especially the flight attendant who looked after our area, was not at all friendly and a touch authoratative. She may have been the most gruff flight attendant i've come across in 40 years of business travel

The staff was great and made the long trip easy peasy!

The free Wi-fi for Aeroplan members was a great touch. The time passed quickly. I found the seats seemed a little closer together than I remember. Not Air Canada's fault, but we were about 20 minutes late landing because the airport was too busy. We had to circle around for a while. The boarding and disembarking went very smoothly.

Too many delays. Seats too small. A budget airline. Will never fly Air Canada again.

The flight was very smooth and good. Boarding was fast, but the staff was just decently friendly.

I liked the behaviour of the crew members.The flight was good.

No food to provide, they forgot that, in some cases, people stay at the airport for hours without food. Now, to provide them with food, they have to ask them to pay, because some don't have money. That way, they can't eat.

Flight was cancelled last minute. Had to scramble and purchase a $2000 flight through a separate airlines. Stuck in Toronto two extra days. Missed my first two days on a new job. Had to rent a car for an additional two days. Scrambled to fins a place to live those extra two days. Spent a ton of extra money and lost a lot of money, as well as made a poor impression at work. Difficult difficult difficult

Terrible, return flight was cancelled a night before the flight was scheduled to depart and I was notified by an email and an automated message on their phone line. I’ll never book Air Canada again

Horrible, we were on a little DeHaviland 400 that was really small and shaky. I am 5' 4" and I had to duck my head to get in it felt like an old war plane.

Somebody either kayak or Air Canada booked my flight under my preferred name Betty instead of my legal name and I almost was denied boarding my flight

Everything you need to know for your flight from London to California

Information on your arrival and departure airports