C$ 236 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 17/3. 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
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
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 Angeles2 stopsC$ 436
San Francisco
San Francisco1 stopC$ 306
San Diego
San Diego2 stopsC$ 462
Palm Springs
Palm Springs2 stopsC$ 549
San Jose
San Jose2 stopsC$ 939
Los Angeles
Los Angeles2 stopsC$ 436
San Francisco
San Francisco1 stopC$ 306
San Diego
San Diego2 stopsC$ 462
Palm Springs
Palm Springs2 stopsC$ 549
San Jose
San Jose2 stopsC$ 939

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, 27 May - Wed, 10 Jun
WestJet Logo
6:15 a.m. - 12:00 p.m.
YXU
-
SFO
8h 45m
1 stop
WestJet Logo
6:00 a.m. - 5:05 p.m.
SFO
-
YXU
8h 05m
1 stop
C$ 306WestJet
Tue, 26 May - Mon, 8 Jun
WestJet Logo
6:15 a.m. - 12:00 p.m.
YXU
-
SFO
8h 45m
1 stop
WestJet Logo
6:05 p.m. - 5:25 a.m.
SFO
-
YXU
8h 20m
1 stop
C$ 316WestJet
Wed, 27 May - Tue, 9 Jun
WestJet Logo
6:15 a.m. - 12:00 p.m.
YXU
-
SFO
8h 45m
1 stop
WestJet Logo
6:05 p.m. - 5:25 a.m.
SFO
-
YXU
8h 20m
1 stop
C$ 331WestJet
Tue, 26 May - Tue, 9 Jun
WestJet Logo
2:35 p.m. - 9:55 p.m.
YXU
-
SFO
10h 20m
2 stops
WestJet Logo
6:05 p.m. - 5:25 a.m.
SFO
-
YXU
8h 20m
1 stop
C$ 332WestJet
Thu, 28 May - Mon, 8 Jun
WestJet Logo
6:15 a.m. - 12:00 p.m.
YXU
-
SFO
8h 45m
1 stop
WestJet Logo
6:05 p.m. - 5:25 a.m.
SFO
-
YXU
8h 20m
1 stop
C$ 351WestJet
Sat, 30 May - Tue, 9 Jun
Air Canada Logo
6:00 a.m. - 10:50 a.m.
YXU
-
SFO
7h 50m
1 stop
Air Canada Logo
4:30 p.m. - 8:53 a.m.
SFO
-
YXU
13h 23m
1 stop
C$ 407Air Canada
Sat, 30 May - Sun, 7 Jun
Air Canada Logo
12:20 p.m. - 9:02 p.m.
YXU
-
SFO
11h 42m
2 stops
Air Canada Logo
4:30 p.m. - 11:43 a.m.
SFO
-
YXU
16h 13m
1 stop
C$ 419Air Canada
Mon, 9 Mar - Thu, 12 Mar
United Airlines Logo
9:40 a.m. - 9:12 p.m.
YXU
-
LAX
14h 32m
2 stops
United Airlines Logo
5:00 a.m. - 5:05 p.m.
LAX
-
YXU
9h 05m
2 stops
C$ 527United Airlines
Fri, 27 Feb - Fri, 6 Mar
United Airlines Logo
5:10 a.m. - 1:44 p.m.
YXU
-
LAX
11h 34m
2 stops
United Airlines Logo
7:03 p.m. - 5:05 p.m.
LAX
-
YXU
19h 02m
2 stops
C$ 528United Airlines
Wed, 6 May - Wed, 13 May
Multiple Airlines Logo
5:55 p.m. - 3:45 p.m.
YXU
-
LAS
24h 50m
3 stops
Multiple Airlines Logo
7:00 a.m. - 5:25 a.m.
LAS
-
YXU
19h 25m
3 stops
C$ 573Multiple Airlines
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$ 315 (return) on average. On the other hand, the most expensive months are December and August, when the average cost of round-trip tickets is C$ 765 and C$ 621 respectively.

Good to know

Low seasonJuly
Cheapest flightC$ 236
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 15% 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 9219 reviews
6.6Food
7.3Comfort
7.1Entertainment
7.7Boarding
8.1Crew
Airline reviews

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

6.0 GoodAnonymous, Jan 2026
SLC - SFO
Read more United Airlines reviews

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Mean flight attendant. I wanted to reuse my plastic cup, but he (Matthew) said he can't for safety. I then said "I don't want water then" and he poured me a glass. I hope Matthew gets herpes and spends the rest of his life poor, lonely, and homeless.

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

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Both flights delayed. 2nd flight over 3 hours late mechanical issues

l really enjoy very much the flight was very pleasant

Flight was delayed 45 minutes because originating flight was coming from Newark. No complimentary snacks were offered on this 5+ hour flight. No screens for the flight, but movies offered if you had already downloaded the United app (which I hadn't on my ipad). No USB ports, only a flimsy plug-in port near the bottom of the seat that was hard to see and kept coming unplugged.

It was good but only meal served is very less. Meantime good to add rice and chicken in one of meal

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

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

I when to Jamaica for my dad funeral and I did not get my luggage from westjet . I add to buy clothes putting me financial debt i did no want to be in Westjet did not call me to apologize are to inquire about my luggage I am still angry about it

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