£302 Find Cheap Flights from London Heathrow Airport 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 Heathrow to California departing on 23/3. 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

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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 Heathrow to California

Cheapest return prices found by our users on KAYAK in the last 72 hours
Los Angeles
Los Angeles1 stop£367
San Francisco
San Francisco1 stop£386
San Diego
San Diego1 stop£474
Palm Springs
Palm Springs2 stops£531
San Jose
San Jose1 stop£457
Fresno
Fresno2 stops£593
Redding
Redding2 stops£957
Arcata
Arcata2 stops£1,406
Los Angeles
Los Angeles1 stop£367
San Francisco
San Francisco1 stop£386
San Diego
San Diego1 stop£474
Palm Springs
Palm Springs2 stops£531
San Jose
San Jose1 stop£457
Fresno
Fresno2 stops£593
Redding
Redding2 stops£957
Arcata
Arcata2 stops£1,406

Book Cheap Heathrow to California Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow 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 return flight deals from Heathrow to California

Mon, 17 Nov - Tue, 2 Dec
TAP AIR PORTUGAL Logo
13:40 - 15:00LHR-LAX
33h 20m1 stop
TAP AIR PORTUGAL Logo
16:45 - 22:40LAX-LHR
21h 55m1 stop
£367TAP AIR PORTUGAL
Find Deal
Mon, 17 Nov - Tue, 2 Dec
TAP AIR PORTUGAL Logo
13:40 - 15:00LHR-LAX
33h 20m1 stop
TAP AIR PORTUGAL Logo
16:45 - 21:35LAX-LHR
20h 50m1 stop
£374TAP AIR PORTUGAL
Find Deal
Thu, 5 Mar - Mon, 9 Mar
Virgin Atlantic Logo
12:20 - 21:49LHR-LGB
17h 29m2 stops
Virgin Atlantic Logo
12:59 - 10:30LGB-LHR
38h 31m2 stops
£427Virgin Atlantic
Find Deal
Mon, 16 Feb - Fri, 27 Feb
Virgin Atlantic Logo
12:20 - 16:23LHR-LGB
36h 03m2 stops
Virgin Atlantic Logo
12:59 - 07:05LGB-LHR
34h 06m2 stops
£428Virgin Atlantic
Find Deal
Tue, 25 Nov - Tue, 2 Dec
Lufthansa Logo
06:35 - 15:15LHR-LAX
16h 40m1 stop
Lufthansa Logo
19:00 - 13:30LAX-LHR
10h 30mdirect
£436Lufthansa
Find Deal
Mon, 8 Dec - Mon, 15 Dec
United Airlines Logo
07:40 - 17:51LHR-SJC
42h 11m2 stops
United Airlines Logo
08:45 - 09:40SJC-LHR
16h 55m1 stop
£473United Airlines
Find Deal
Tue, 25 Nov - Tue, 2 Dec
United Airlines Logo
08:30 - 22:28LHR-SJC
21h 58m2 stops
United Airlines Logo
12:40 - 09:40SJC-LHR
13h 00m1 stop
£473United Airlines
Find Deal
Mon, 24 Nov - Mon, 8 Dec
Lufthansa Logo
08:30 - 20:53LHR-SJC
20h 23m2 stops
Lufthansa Logo
08:45 - 09:40SJC-LHR
16h 55m1 stop
£476Lufthansa
Find Deal
Tue, 25 Nov - Tue, 2 Dec
British Airways Logo
08:20 - 15:56LHR-SNA
15h 36m1 stop
British Airways Logo
12:46 - 10:00SNA-LHR
13h 14m1 stop
£482British Airways
Find Deal
Tue, 27 Jan - Tue, 17 Feb
British Airways Logo
15:00 - 22:48LHR-ONT
15h 48m1 stop
British Airways Logo
16:59 - 13:15ONT-LHR
12h 16m1 stop
£486British Airways
Find Deal
Booking Insights

KAYAK's insights & trends for Heathrow to California flights

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

What is the cheapest London Heathrow Airport 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 Heathrow Airport found in the last 72 hours was to Los Angeles, at £379 return. 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 £379.

Can I save money by flying with a stopover from London Heathrow Airport to California?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of £536, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport 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 Heathrow Airport to California is September, when tickets cost £417 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of return tickets is £635 and £611 respectively.

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

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

If you are looking for a flight deal from London Heathrow Airport to California, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from California, Monday is the cheapest day to fly and Saturday is the most expensive.

How far in advance should I book a flight from London Heathrow Airport 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 Heathrow Airport 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 a flight from London Heathrow Airport to California, you should book around 2 weeks before departure, which saves you about 29% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know - Cheap tickets from London Heathrow Airport to California

Low seasonJanuary
Cheapest flight£302
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly (27% more expensive on average)
Flight from London Heathrow Airport to Los Angeles

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

Insights shared by verified travellers who flew the route from Heathrow to California 
AlastairFlew with British AirwaysLHR-SFOFeb 2025
Make sure your free checked luggage is for outward and return flights.
Verified travelerFlew with British AirwaysLHR-SANSept 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 IberiaLHR-LAXSept 2024
Pack light and know you can always get stuff when you land.
Verified travelerFlew with United AirlinesLHR-SFOSept 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 AirwaysLHR-LAXJun 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 AirlinesLHR-SFOMar 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 IberiaLHR-SFOMar 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

  • How does KAYAK find such low prices on flights from London Heathrow Airport 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 Heathrow Airport to California.

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

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

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

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

    The cheapest time of day to fly to California is generally at night, when retur flights cost £506 on average. Morning departures are around 9% cheaper than evening flights, on average. The most expensive time of day to fly to California is generally in the evening, which is peak travel time and where the average cost of a ticket is £582.

Reviews of the top 5 airlines flying from Heathrow 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 Heathrow 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.
7.7
KLMOverall score based on 1406 reviews
7.8Boarding
7.1Entertainment
8.4Crew
7.7Comfort
7.3Food
Airline reviews

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

2.0 MediocreAbisola, Oct 2025CDG - AMS
Read more KLM reviews

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

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!

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

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

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

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

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

Great crew - old style upper class seats on the older fleet now feels dated

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

Food was excellent. Service was very good. Staff was very helpful to all passengers.

Flight from Rome to SFO was excellent compared To our flight to Europe from SFO. The food was much tastier. You can see how UNITED is skimping, though. Instead of getting something mid flight you had to ask for it. It was not automatically served. There was a cookie at the end of the arrival meal, for example that tasted like it just came out of a box. They used to serve a little container of nuts, now … a tiny container of nuts, mixed with pretzels. This was business class that you really have to pay for! But this is minor complaints compared to the overall. My major complaint is the position of the even numbered seats by the windows. You have to turn around to see your window & the positioning as some other controls are harder to get at. This is compared to the odd number seat that are perfectly aligned.

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

The internet service I paid for didn’t work at all and the flight crew was not very friendly.

Subject: Formal Complaint: Discriminatory and Unprofessional Conduct – Request for Immediate Action & Compensation Dear [Airline Customer Relations Team], I am writing to file a formal complaint regarding my recent travel experience with [Airline], which was by far the worst I have ever encountered. What occurred was not only unprofessional, but in several instances discriminatory, unsafe, and unacceptable. On the first leg of my trip, I arrived only four minutes past check-in. Instead of making any attempt to resolve the matter, your representative flatly denied me boarding and made me wait while she attended to passengers who arrived after me. By the time a manager intervened, it was too late to board, costing me time, money, and unnecessary frustration. The second leg of my trip (Chicago–San Francisco) raised even more serious concerns. From the outset, it was apparent that the staff—particularly two attendants—prioritized Caucasian passengers while dismissing African American and minority passengers. • When a Caucasian passenger in the exit row refused to comply with federal safety requirements, I, as a first responder, immediately offered to switch seats and assume the responsibility. My offer was blatantly ignored, and instead, a Caucasian passenger seated further up was chosen. This was discriminatory and deeply insulting, especially as I was actively de-escalating the situation that could have delayed the flight further. • During a lengthy tarmac delay of over 90 minutes, passengers were given conflicting and unreasonable instructions that created unnecessary distress and tension. • Throughout the flight, a visibly intoxicated passenger directly in front of me was disruptive, rude to others, failed to comply with seatbelt and electronic device rules, and yet faced no enforcement from the crew. In stark contrast, I was singled out for repeated compliance checks even though I was following every rule. This unequal treatment was so obvious that multiple passengers around me spoke up in my defense. This pattern of behavior demonstrated a clear lack of professionalism, disregard for passenger safety, and discriminatory treatment. I expect far better from an airline of your stature. As a paying customer subjected to this unacceptable treatment, I am formally requesting: 1. A full investigation into the conduct of the staff on both flights. 2. A written apology acknowledging the discriminatory and unprofessional behavior I endured. 3. Appropriate compensation for the distress, inconvenience, and mishandling of my travel. If this matter is not addressed promptly and thoroughly, I will have no choice but to escalate my complaint further, including filing with the U.S. Department of Transportation and sharing my experience through other channels. I trust [Airline] will take this complaint seriously and provide a timely resolution.

Check in was quick and easy during early hours. Flight was on time, and customer services was a plus.

I understand that the food on the airplane wouldn’t be fantastic. However, it wasn’t good at all. 😭

The flight was comfortable with the exit row and great service

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

1. when we went to check in, our 2 first class seats had been CANCELED and the flight was sold out. This was done without our prior knowledge. It was all we could do to restore one first class seat for my wife and I flew economy. 2, Our flight home was scheduled to leave at 10:30 pm. Due to tsunami warnings, the roads were closed and our flight status was uncertain as to whether it would leave as scheduled. It was announced that it would now leave at 11:20 pm and the roads were now open since the tsunami had come and gone. We made a mad dash to the airport and checked in. Delays were announced at 12:30 pm, 1:30 am, 2:30 am and at 3:30 am it was canceled. Since this was a flight due to natural (tsunami) causes, there was no compensation. We were told to return at 1:00 pm the next day and our baggage would be kept on the plane since the same plane was going to leave at 1:00 pm. We had to return to our hotel for the rest of the night. The same plane did not leave at 1:00 pm and our baggage was gone! All in all, it was a miserable performance by UA. Information was hard to obtain and no one knew what was going on and what was going to happen. Hundreds of passengers slept on the floor, chairs, etc. No food and no water was made available to the passengers. It was a situation where UA could care less what was going on. As a one million mile flyer, I had not experienced anything like this before and it was hugely disappointing!

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

They don’t give information on why a flight is delayed in a timely manner. Very frustrating.

The plane (Mitsubishi CRJ) felt old, creaking and not very new. The crew was okay. Hot water provision was broken so hot beverages could't be served.

The plane was late (as was my flight out from Birmingham the day before)

Best flight attendants ever! Very customer and service oriented, courteous, professional and helpful.

Never happened. Flight was delayed. Had to be re rojyed

Lufthansa is my favorite airline and have flown oversea with them for the past 25 years: i always found them so professional and incredibly efficient from checking in to arrival. I also love their Munich or Frankfurt airports.

We paid for business class, and my seat did not work at all. Each time I wanted to adjust the position, an attendant had to come to physically force the seat into its new position. They tried to fix it by fiddling with the electronics (military reset, for example), to no avail. Also, the food was just mediocre. We were at the end of a serving section, so they ran out of several choices. (This was on the flight from Los Angeles to Munich.)

The flight was delayed by an hour. Made the connection uncomfortably tight.

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!

There might be more food options for people who can't eat so much starch/sugar/bread/rice. Meat, cheese, walnuts/pecans for snack, maybe jerky or other kinds of meat-based snacks would be better than bread and rice and sweets. I had an extra chardonnay, which was fine. The entertainment was great.

Unfortunately, my flight was cancelled because of some sort of emergency over the Atlantic and had to return to London. While I think British Airways made every effort to mitigate the situation, I must say it was still pretty unpleasant. I do appreciate the fact, however, that British Airways put my safety first…and I think the effort to correct a bad situation was very sincere. But I think the process might be handled better in future.

Crew service was poor and very little difference between premium economy and economy. Disappointed.

My bags never made it on the flight and I now have to wait for them to arrive hopefully tomorrow. You can’t even track your bags in the app to see where they are since they didn’t arrive. You have to file a claim and then wait for them to inform you when you will receive your bag. We were already delayed for an hour due to baggage so I don’t understand how my bag didn’t make the flight.

One of the worst experience given the middle seat even asked for the change no one honored,boarded at the end and overall one of the worst experience

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.

The crew was very nice and pleasant. We were very reluctant to book our flight with British Airlines because we had bad experience with their flight attendants on the previous trips, they were rude and not helpful.

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

The seat pads are past there sell by date now and are uncomfotable. Also, with screens in the back of the seat, the seats shouldnt be able to recline as this puts rhe screen in your face.

1. The website didn’t allow me to checkin from London as I have Bangladesh passport with US permanent resident card. This pushed me to sit with my wife in the middle of two aisle seats, terrible experience! 2. BA should allow within 24 hours to checkin with other passport holders to choose better seats. A 2nd verification of travel documents can be done at the desk about immigration status. 3. Food options were poor for vegetarian passengers, try to introduce healthy options avoiding carb-dense food ingredients.

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