$473 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 9/29. 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to California.
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Cheap Flights from London to California

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Los Angeles
Los Angeles1 stop$586
San Francisco
San Francisco1 stop$621
San Diego
San Diego1 stop$787
San Jose
San Jose1 stop$658
Palm Springs
Palm Springs1 stop$863
Sacramento
Sacramento1 stop$866
Los Angeles
Los Angeles1 stop$586
San Francisco
San Francisco1 stop$621
San Diego
San Diego1 stop$787
San Jose
San Jose1 stop$658
Palm Springs
Palm Springs1 stop$863
Sacramento
Sacramento1 stop$866

Book Cheap London to California Plane Tickets

 
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

Fri, Jul 3 - Sun, Aug 2
Virgin Atlantic Logo
6:00 pm - 7:57 am
LHR
-
LAX
21h 57m
1 stop
Virgin Atlantic Logo
7:00 am - 10:20 am
LAX
-
LHR
19h 20m
1 stop
$586Virgin Atlantic
Thu, Jun 4 - Fri, Jul 10
Virgin Atlantic Logo
6:30 am - 2:45 pm
LHR
-
LAX
16h 15m
1 stop
Virgin Atlantic Logo
8:30 pm - 5:30 pm
LAX
-
LHR
13h 00m
1 stop
$587Virgin Atlantic
Sat, Jul 4 - Sun, Aug 2
Virgin Atlantic Logo
5:25 pm - 7:57 am
LHR
-
LAX
22h 32m
1 stop
Virgin Atlantic Logo
11:15 am - 10:20 am
LAX
-
LHR
15h 05m
1 stop
$594Virgin Atlantic
Tue, Jun 16 - Wed, Jul 15
British Airways Logo
3:05 pm - 6:20 pm
LHR
-
LAX
11h 15mnonstop
British Airways Logo
8:55 pm - 3:25 pm
LAX
-
LHR
10h 30mnonstop
$597British Airways
Fri, May 15 - Sun, May 31
United Airlines Logo
11:05 am - 9:20 pm
LHR
-
SFO
18h 15m
1 stop
United Airlines Logo
11:59 pm - 9:35 pm
SFO
-
LHR
13h 36m
1 stop
$621United Airlines
Fri, May 15 - Fri, May 29
United Airlines Logo
1:00 pm - 4:10 pm
LHR
-
SFO
11h 10mnonstop
United Airlines Logo
11:59 pm - 9:25 pm
SFO
-
LHR
13h 26m
1 stop
$623United Airlines
Wed, Jul 15 - Mon, Aug 3
American Airlines Logo
12:20 pm - 12:24 pm
LGW
-
LAX
32h 04m
2 stops
American Airlines Logo
11:40 am - 10:40 am
LAX
-
LGW
39h 00m
2 stops
$626American Airlines
Wed, Jul 15 - Tue, Aug 4
American Airlines Logo
12:20 pm - 12:24 pm
LGW
-
LAX
32h 04m
2 stops
American Airlines Logo
10:51 am - 10:40 am
LAX
-
LGW
15h 49m
1 stop
$627American Airlines
Wed, Sep 9 - Tue, Sep 29
British Airways Logo
2:25 pm - 9:08 pm
LHR
-
ONT
14h 43m
1 stop
British Airways Logo
1:31 pm - 10:30 am
ONT
-
LHR
12h 59m
1 stop
$641British Airways
Tue, May 26 - Tue, Jun 2
Delta Logo
8:40 am - 10:34 pm
LHR
-
ONT
21h 54m
2 stops
Delta Logo
11:52 am - 12:10 pm
ONT
-
LHR
16h 18m
1 stop
$652Delta
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.

How much is a round-trip flight from London to California?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from London to California departing in July.

What is the cheapest London to California flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to California from London found in the last 72 hours was to Los Angeles, at $595 round-trip. The most popular route is from London Heathrow Airport (LHR) to Los Angeles (LAX), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $595.

What is the cheapest time of day to fly to California?

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

The cheapest time of day to fly to California is generally in the afternoon, when round-trip flights cost $667 on average. Morning departures are around 2% more expensive than evening flights, on average. The most expensive time of day to fly to California is generally in the morning, which is peak travel time and where the average cost of a ticket is $710.

Can I save money by flying with a layover from London to California?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $850, prices are generally cheapest when you fly direct.

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 September, when tickets cost $553 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $793 and $786 respectively.

What’s the cheapest day of the week to fly from London to California?

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

If your flying dates are flexible, you should consider flying to California on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from London to California. For your return ticket, we recommend flying on a Wednesday and avoiding Saturdays for the best deals.

How far in advance should I book a flight from London to California?

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from London to California, you should book around 5 weeks before departure, which saves you about 26% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$473
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from London Gatwick Airport to Los Angeles

Flights from London to California: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from London to California 
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 British Airways
LHR
-
SAN
Sep 2024
Flight overall is good. Service is very good. Bring yourself some snacks, in case the food isn’t up to your taste.
MeganFlew with Iberia
LHR
-
LAX
Sep 2024
Pack light and know you can always get stuff when you land.
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.
SimonFlew with British Airways
LHR
-
LAX
Jun 2024
If flying business class I’d research which cabin your aircraft operates. BA have some old business class on the 380 and new business class on the 777. (And 350). The new cabin is so much better. But the food just isn’t as good as it used to be
Verified travelerFlew with American Airlines
LHR
-
SFO
Mar 2024
Heathrow is vast, allow plenty of time to drop bags and go through security. At San Francisco the immigration takes a bit of time and we had to wait around 1.5hrs, bare this in mind when booking car rental. The is a shuttle train from the airport to the car rental area which is very slick and efficient.
Ana-MariaFlew with Iberia
LHR
-
SFO
Mar 2024
In London triple check your flight they have multiple leaving for the same destination once - it is easy to get them confused

FAQs - booking California flights

  • What’s the cheapest way to get from San Francisco Airport (SFO) to the city centre?

    The most reasonably priced method of transport when it comes to getting to downtown San Francisco is the service provided by the BART, which is a metro/train service that only takes 30 minutes and costs around $10 (£8.20). You can get to the airport train station using the AirTrain, departing from all terminals at the airport. You can get tickets and continue your journey to the Antioch-SFO/Millbrae Line, which is a subway line and you can reach all popular central metro subway stations from here.

  • Where can I find car hire at Los Angeles Airport (LAX)?

    You may hire a car from Alamo, Avis, Budget, Dollar, Enterprise, Fox, Hertz, National, Thrifty, Zipcar, and SIXT at the airport. The offices and rental car facilities are located to the east of the airport. The automobile rental firms are accessible via the free shuttle bus service; simply follow the purple Rental Car Shuttles signs to the bus stops.

  • How do I reduce my carbon footprint when flying from London to California?

    To reduce your carbon footprint when flying to California from London, it’s best to consider flying from London Heathrow Airport (LHR) with British Airways to Los Angeles Airport (LAX) with one stopover in Philadelphia Airport. You can also fly the same route with American Airlines, and both flights would reduce your carbon emissions by 37-38%.

  • What are the best options for parking at Heathrow Airport (LHR)?

    It may depend on how long you need parking, but at Heathrow Airport, you can choose from various car parks. The long-stay parking lot usually offers the greatest prices, so park here. Depending on the length of time you require, you will typically be charged between £18 and £20 each day. This package also includes a free shuttle bus journey to the terminal, which takes approximately 10 minutes.

  • 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 travelers 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.

Top tips for finding cheap flights to California

  • When it comes to flying from London airports, you can take advantage of the Click & Collect online duty-free service and pay for your goods ahead of your arrival at the airport. Once you arrive at the airport you can pick-up your order before you head to the departure gate.
  • Make an online reservation for the Heathrow Express Train from Paddington Station to get from central London to London Heathrow Airport (LHR). Three months in advance, you may save around £20 since tickets are around £5.50, the ticket gets gradually more expensive the closer you get to the travel date and costs £25 on the day of travel, so it's worth it to reserve ahead of time if possible.
  • If you want to relax and unwind prior to taking your flight, airports such as London Heathrow Airport and London Gatwick Airport (LGW) have excellent lounge services, which you can reserve online prior to getting to the airport. Typically, prices range from £25-42 at Heathrow, and £32-38 at Gatwick.
  • To save money on flights from London to California, the best option is to fly out of London Gatwick Airport on flights that have at least one stopover. You can fly with Norse Atlantic Airways to Los Angeles Airport (LAX) via New York John F. Kennedy Airport (JFK) and self-transferring to Newark International Airport (EWR) and connecting with Alaska Airlines to Los Angeles.
  • If you simply want to fly from London to California, you can only do it through London Heathrow Airport. These flights are often more expensive than others that involve a stopover; for the cheapest and most frequent flights, we recommend checking fares with Austrian Airlines, who fly directly to Los Angeles Airport.

Reviews of the top 5 airlines serving 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.
7.9
DeltaOverall score based on 8465 reviews
7.9Comfort
7.8Entertainment
8.1Boarding
8.5Crew
7.2Food
Airline reviews

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

10.0 ExcellentDavid, Apr 2026
DTW - SFO
Read more Delta reviews

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

WiFi didn’t work most of the time. The usb chargers would work only occasionally for 5 mins and wouldn’t charge after that. Had to keep trying repeatedly at each of the seats in the row.

The crew bent over backwards to thank us for flying and make us comfortable. The food service was quick and efficient. The Captain communicated and said goodbye and thank you as we departed. They really stood out!

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

Staff at the check-in counter were friendly, happy and helpful. They tagged our bags and sent us to “bag drop off” but were not very clear about where that was. The airport was busy we headed off in what we thought was the right direction until a gentleman waved us down and actually came after us. He was the baggage handler for Delta and recognized our “deer in the headlights “ look-he brought us to the right area (which was marked as the Southwest Airlines Drop Off) and sent us on our way. Wonderful guy, low key and working with a big smile on his face. Loved it. Loved him.

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

Flew steerage class. Short on leg room unless you pay more. No window unless you pay more. Etc. United is trying to squeeze every cent from you. It doesn’t make for any loyalty.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

Outstanding service, great food, friendly & efficient crew, safe & comfortable flight

Staff were not attentive, wifi did not work, cut my head in the bathroom due to the position of the soap on the sink, had blood running down my face, told staff, they had no expression no sympathy, didn't even say "sorry", they said "oh we will have a look at that" about 10 mins later the purser brought me a bandaid, still no sorry.... Shocking

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

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.

Dinner was good, but the breakfast served in the morning was horrible.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

First time flying with UA and it was a great experience. Thank you

Seating and zone. The minor I went with didn’t even seat close to me

My seat 3G did not go down fully and the buttons were not working properly

Food has been disappointing in both legs of flight to india

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

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

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

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

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

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.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

British Airways is an excellent airline. Comfort, food and airline personnel.

Older airplane with worn out seats. No entertainment system at all. Connecting to Wi-Fi was problematic and hit and miss.

An delay of almost 3 hours while passengers were already in the plane kept us very uncomfortable. The food was also very limited. A bad experience overall.

I understand that there is a catering issue - water should be the minimum stock. During the flight, not once that the attendants came through with water. The conversations in the kitchen were very loud and they were swearing. I do not expect any white glove service, at the minimum, we should be cordial. It was almost an inconveniece that we were on the flight. And it made us feel if you even dare question us, we'll make you deplane.

The flight attendant use 1.5 hours to answer my call. My dirty food tray was unattended.

The flight was completely full. Crew was not happy. Everyone was rude and brusque. Travelling with an arm in a cast and seating in the first row of economy cabin (in front of the separation) I needed help retrieving my tray for the meal. A staff member literally threw the tray on my lap, without helping to take out the tray. Boarding was messy, with 300 people waiting in an encloses space with low ceiling. I will try to avoid AA next time I have a long flight.

The business class seats are dated and uncomfortable. The space is bare minimum and there is absolutely no privacy. For $4K, this is not what I expect.

Flight, food and crew were all good, friendly and very satisfactory.

Lost luggage after 2 days no word leaving on cruise no stuff or clothes

Staff's did their best to make everyone comfortable and I appreciate them for it

A shout-out to the flight attendent, Lauren, who was the main person assisting me. She was amazing - perfect balance of bright, cheerful, engaging, yet formal

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.

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

Cabin class types available on flights to California

Cabin classes available on flights to California. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.