Cheap flights from California to London from $203
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to London departing on 7/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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1 adult
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0 bags
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Cheap round-trip flights
These are some of the best round-trip flight deals from California to London that have been recently found on momondo from popular airlines, departing in the coming months.
Cheap one-way flights
Flying one-way? These are some of the best deals recently discovered on momondo for flights from California to London.
Cheap last minute flights
Planning a quick getaway from California to London? These are the last-minute flight deals available now.
Cheap direct flights
If you prefer a non-stop journey, check out our latest direct flight deals to London, so you can enjoy a seamless trip without layovers.
Aer Lingus flights from California to London Heathrow Airport
Our best Aer Lingus deals on California to London Heathrow Airport flight tickets
Aer Lingus![Aer Lingus]()
Aug 17![Aer Lingus]()
Aug 27
SFO5:45 pmSan Francisco
13h 10m
1 stop
LHR2:55 pmLondon Heathrow
LHR9:50 amLondon Heathrow
14h 05m
1 stop
SFO3:55 pmSan Francisco
Aer Lingus![Aer Lingus]()
May 12![Aer Lingus]()
May 16
SFO5:45 pmSan Francisco
14h 10m
1 stop
LHR3:55 pmLondon Heathrow
LHR7:40 amLondon Heathrow
16h 15m
1 stop
SFO3:55 pmSan Francisco
United Airlines flights from California to London Heathrow Airport
Our best United Airlines deals on California to London Heathrow Airport flight tickets
United Airlines![United Airlines]()
Oct 21![United Airlines]()
Oct 29
SFO4:05 pmSan Francisco
10h 20m
LHR10:25 amLondon Heathrow
LHR8:55 amLondon Heathrow
15h 30m
1 stop
SFO5:25 pmSan Francisco
United Airlines![United Airlines]()
Sep 9![United Airlines]()
Sep 18
SFO8:30 amSan Francisco
17h 05m
1 stop
LHR9:35 amLondon Heathrow
LHR9:30 amLondon Heathrow
14h 30m
1 stop
SFO4:00 pmSan Francisco
See travel insights to London from
How to get the cheapest flight ticket from California to London Heathrow Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
Prices
Airlines
Other information
What is the cheapest month to fly to London Heathrow Airport?
The month of October is, on average, the cheapest month to fly to London Heathrow Airport from California, with most prices found around $645. If you’re not able to fly to London Heathrow Airport in October, then September is your next best option. Flight prices from California to London Heathrow Airport during September average around $671.
What is the cheapest day to depart on your flight to London Heathrow Airport?
Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $820. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $955.
What is the cheapest time of day to depart on your flight to London Heathrow Airport?
According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from California to London Heathrow Airport in the morning for as low as $755. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $900.
What is the cheapest California to London Heathrow flight route?
Fly from Los Angeles to London Heathrow for the best California - London Heathrow flight prices
How far in advance should I book a flight to London Heathrow Airport?
You are more likely to see cheaper flights to London Heathrow Airport from California when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $792 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from California for as low as $752 on momondo.
What cabin class options are available on California to London Heathrow flights?
There are 4 cabin classes available to choose from on California to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from California to London Heathrow?
TAP AIR PORTUGAL, Iberia, and Virgin Atlantic are the most popular carriers operating from California to London Heathrow
What airlines fly to London Heathrow Airport?
British Airways, United Airlines and Iberia are the top three most popular airlines that fly to London Heathrow Airport from California according to our data. British Airways is the first choice among our users, with 37% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 21 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from California to London Heathrow Airport on average per day?
As of April 2025, 112 flights take off from California and land in London Heathrow Airport each day. The most common flight departure time for this route is 4:00PM, with 60% of daily flights taking off in the afternoon.
How many flights depart from California to London Heathrow Airport on average per week?
As of April 2025, there are 789 flights per week flying from California to London Heathrow Airport. The most common day of the week flights depart is Wed, with 15% of flights taking off on this day.
Cheap California to London Heathrow Airport flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from California to London Heathrow Airport
When did momondo last update prices for flights from California to London Heathrow Airport?
Prices for flights from California to London Heathrow Airport refresh daily.
How many operators does momondo search for flights from California to London Heathrow Airport?
There are 21 operators available for flights from California to London Heathrow Airport as of April 2025.
How old do you have to be to fly from California to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from California to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from California to London Heathrow Airport?
Based on momondo bookings for flights between California and London Heathrow Airport, the leading plane model is Airbus A380-800, making up 19.18% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 18.51%, Boeing 777 with 14.19%, and Boeing 777-300ER with 13.28%.
Best airlines flying from California to London Heathrow Airport
Compare and see reviews for airlines that fly from California to London Heathrow Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $272 | Free Cancellation | Rating 7.2 2,826 reviews | |||
| PriceFrom $326 | Free Cancellation | Rating 7.3 1,349 reviews | |||
| PriceFrom $430 | Free Cancellation | Rating 7.4 1,446 reviews | |||
| PriceFrom $452 | Free Cancellation | Rating 6.7 7,046 reviews | |||
| PriceFrom $454 | Free Cancellation | Rating 7.4 643 reviews | |||
| PriceFrom $465 | Free Cancellation | Rating 7.6 1,275 reviews | |||
| PriceFrom $474 | Free Cancellation | Rating 7.1 45 reviews | |||
| PriceFrom $486 | Free Cancellation | Rating 7.8 1,334 reviews | |||
| PriceFrom $491 | Free Cancellation | Rating 7.1 1,852 reviews | |||
| PriceFrom $533 | Free Cancellation | Rating 7.5 1,588 reviews |
Traveling to a place near London?
Book flights to London if you plan to visit one of these locationsGatwick
Hounslow
Croydon
Luton
Slough
Guildford
Dartford
Dover
Stansted
Hayes
Salisbury
Ilford
Milton Keynes
Canterbury
Colchester
Wembley
Swindon
Chelmsford
Richmond
Poole
Why use momondo?
Why should I use momondo to find a flight deal from California to London?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from California to London for you.
Can I find flights from California to London with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to London from California with this policy.
How can momondo help me find flights from California to London?
Once all potential California to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from California to London right now. Can momondo alert me if prices change?
If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from California and alert you when they change.
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