£287 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 20/4. 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

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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£440
San Francisco
San Francisco1 stop£470
San Diego
San Diego2 stops£554
Palm Springs
Palm Springs2 stops£498
San Jose
San Jose2 stops£471
Fresno
Fresno2 stops£551
Redding
Redding2 stops£589
Bakersfield
Bakersfield2 stops£1,547
Los Angeles
Los Angeles1 stop£440
San Francisco
San Francisco1 stop£470
San Diego
San Diego2 stops£554
Palm Springs
Palm Springs2 stops£498
San Jose
San Jose2 stops£471
Fresno
Fresno2 stops£551
Redding
Redding2 stops£589
Bakersfield
Bakersfield2 stops£1,547

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, 12 Jan - Mon, 2 Feb
United Airlines Logo
12:05 - 21:58
LHR
-
ONT
17h 53m1 stop
United Airlines Logo
13:24 - 09:40
ONT
-
LHR
12h 16m1 stop
£373United Airlines
Sun, 18 Jan - Sat, 24 Jan
United Airlines Logo
13:45 - 22:53
LHR
-
ONT
17h 08m1 stop
United Airlines Logo
06:00 - 07:30
ONT
-
LHR
17h 30m1 stop
£417United Airlines
Fri, 20 Feb - Sat, 28 Feb
Virgin Atlantic Logo
12:30 - 22:22
LHR
-
SNA
17h 52m1 stop
Virgin Atlantic Logo
13:33 - 10:00
SNA
-
LHR
12h 27m1 stop
£453Virgin Atlantic
Wed, 11 Mar - Wed, 15 Apr
Virgin Atlantic Logo
12:20 - 22:33
LHR
-
ONT
17h 13m1 stop
Virgin Atlantic Logo
12:00 - 13:30
ONT
-
LHR
17h 30m1 stop
£460Virgin Atlantic
Wed, 21 Jan - Thu, 29 Jan
British Airways Logo
11:45 - 15:00
LHR
-
SFO
11h 15mdirect
British Airways Logo
20:40 - 15:10
SFO
-
LHR
10h 30mdirect
£471British Airways
Mon, 27 Apr - Wed, 20 May
Lufthansa Logo
08:45 - 16:10
LHR
-
SFO
15h 25m1 stop
Lufthansa Logo
21:05 - 19:40
SFO
-
LHR
14h 35m1 stop
£471Lufthansa
Wed, 11 Mar - Mon, 30 Mar
British Airways Logo
15:25 - 19:45
LHR
-
SFO
11h 20mdirect
British Airways Logo
16:35 - 11:00
SFO
-
LHR
10h 25mdirect
£473British Airways
Tue, 10 Feb - Tue, 17 Feb
KLM Logo
17:50 - 16:14
LHR
-
OAK
30h 24m2 stops
KLM Logo
05:55 - 10:00
OAK
-
LHR
20h 05m1 stop
£483KLM
Wed, 14 Jan - Tue, 20 Jan
Lufthansa Logo
07:40 - 20:56
LHR
-
SJC
21h 16m2 stops
Lufthansa Logo
08:40 - 09:40
SJC
-
LHR
17h 00m1 stop
£485Lufthansa
Sun, 25 Jan - Sun, 1 Feb
KLM Logo
11:45 - 16:07
LHR
-
LGB
36h 22m2 stops
KLM Logo
07:00 - 08:45
LGB
-
LHR
41h 45m2 stops
£501KLM
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 £388 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 £388.

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 £593, 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 £410 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of return tickets is £612 and £594 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 28% 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£287
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly (25% more expensive on average)
Flight from London Heathrow Airport to San Diego

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 Airways
LHR
-
SFO
Feb 2025
Make sure your free checked luggage is for outward and return flights.
Verified travelerFlew with British Airways
LHR
-
SAN
Sept 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
Sept 2024
Pack light and know you can always get stuff when you land.
Verified travelerFlew with United Airlines
LHR
-
SFO
Sept 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

  • 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 £500 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 £568.

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 1432 reviews
7.6Comfort
7.8Boarding
7.2Food
8.3Crew
7.1Entertainment
Airline reviews

Terrible last row seats many seats available but no offer to move to better seat

2.0 MediocreAnonymous, Dec 2025
AMS - BUD
Read more KLM reviews

Terrible last row seats many seats available but no offer to move to better seat

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.

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

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.

United has come a long way, it’s been a fantastic experience traveling with them.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

The flight attendants were very rude, beyond comprehension. I took a business class from London to SFO for the first time on United. When I asked for a second piece of bread during dinner, the serving attendant threw a 3rd bread on my plate and said, “here. You can have this one too”! I couldn’t believe the rudeness of the attendant. Most all attendants were very rude, unhelpful, sing the food was absolutely disgusting. Never fly United internationally in business class. My flight back to SFO was a nightmare!!

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

7 hours delayed due to operational issues on United’s end. Basically laziness.

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.

Smooth flight with enough time for connection. Ran out of meal options. In-flight and gate staff were friendly and helpful. Good service overall.

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.

Audi visual not working for a whole group of seats in first class. How does a plane leave the main hub in such poor condition? How much that we can’t see so immediately is also compromised?

main meals are horrible but then you dont fly for the food

It was good. Couldn’t Check in online and select seats

It was great. Enough space and room for legs . Great service to.

⭐ British Airways Review — A Journey of Highs, Lows, and Lessons ⭐ I recently flew Business Class round-trip from Boston to Mumbai with British Airways, and my experience was a tale of two extremes — from disappointment to exceptional service, and then back to inconsistency. Boston → London: A Surprisingly Poor Start My journey began on a disappointing note. On a 6-hour Business Class flight, I was surprised to discover that there wasn’t a single proper vegetarian meal option available. I was offered a few bakery items only after repeatedly requesting something to eat. The flight attendant shrugged, offered no solution, and eventually — quite literally — threw some bread at me after much delay. This was not only disheartening, it was extremely surprising given my wonderful Business Class experience with BA last year. I stepped off that flight genuinely hungry and had to make a mad dash to the lounge just to get a proper meal. London → Mumbai: A Complete Turnaround The next sector restored my faith in British Airways. The entire crew was warm, welcoming, attentive, and genuinely caring. A special shoutout to Phiroze and the entire team serving the Business Class cabin — their professionalism, hospitality, and thoughtful service were extraordinary. They truly embodied what makes British Airways a global leader, and I am deeply grateful for the experience they provided. This is the BA I know and love. Mumbai → London: A Strange Meal Schedule This sector was generally fine, but the meal timing was puzzling. Lunch at 10:30 AM — for a Business cabin — felt unusual, and most passengers, including myself, barely touched it. The rest of the service was smooth, but the scheduling definitely needs a rethink. London → Boston: Mixed Experience Again The flight itself was decent, but the Business Lounge at Heathrow for this leg was a letdown. Arrived during lunch hours: no hot vegetarian options available Lounge area: dirty dishes everywhere Even after politely alerting the staff, the dishes were ignored and left uncleared For a premium cabin passenger — and at one of the world’s busiest international hubs — this was disappointing. Overall Impression My journey with British Airways felt inconsistent — two great sectors sandwiched between two that fell short of the BA standard. When BA is good, it is world-class. When it misses, the gap is noticeable. I genuinely hope the airline takes this feedback as constructive insight. I continue to believe in British Airways, and I commend the outstanding crew on the London → Mumbai sector — they were the highlight of my entire trip. With a little more focus on vegetarian meal availability, lounge service, and consistency across crews, BA can ensure every Business Class passenger experiences the premium journey they promise.

We were in business class and I had seat # 1. This was a night flight and after dinner was served, lights were dimmed and I went to sleep. The crew were loud and noisy so I didn’t get much sleep. I expect the crew to enjoy themselves but would Appreciate some decency in staying quiet while the passengers sleep

Have travelled business class with other airlines who profess to be the best in the world. They can however not beat the service and comfort that BA provide.

Great on board entertainment Tasty food Cattle class obviously crammed but not as bad as shorter hall flights

Logan gate staff was unhelpful. Arrived early, come to find out the airbus scheduled was reassigned and I did not have a seat. The desk agent spoke to his supervisor who instructed him to give me a boarding pass to get up to gate area, he was polite. At the gate the fellow was sitting to the side with two other BA staff . I asked him if he could help me, his answer was” we are on a break, we are closed” then turned his back. I am almost 70, drove 4 1/2 hours to Boston and had been looking forward to this trip for 5 months. I have worked in service many times in my life and this is not how it is done. I eventually (1/2 hr) before boarding was able to get a seat. The rest of the flight experience was unremarkable.

The boarding process was chaotic at LHR and the seat was not as comfortable as other airlines....

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

Information on your arrival and departure airports