Cheap flights from California to London from £155
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 6/8. 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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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
What is the cheapest month to fly to London Heathrow Airport?
In general, October is the cheapest month to fly from California to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £475. The month of September is another great option to travel to London Heathrow Airport, with average flight prices from California averaging around £492.
What is the cheapest day to depart on your flight to London Heathrow Airport?
On average, the least expensive day to fly to London Heathrow Airport from California is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £513. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £595.
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 afternoon. momondo users have found flights departing from California to London Heathrow Airport in the afternoon for as low as £547. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £683 on average. Flights to London Heathrow Airport from California at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.
What is the cheapest California to London Heathrow flight route?
Fly from San Francisco 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 12 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £578 when searching 12 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 £523 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, SWISS, and Lufthansa are the most popular carriers operating from California to London Heathrow
Which airlines fly to London Heathrow Airport?
Virgin Atlantic, British Airways and Iberia are the top three most popular airlines that fly to London Heathrow Airport from California according to our data. Virgin Atlantic is the first choice among our users, with 42% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 12 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?
114 flights are operational daily from California to London Heathrow Airport as of June 2025. The most popular departure time for this route is 16:00, with 56% of flights per day taking off in the afternoon.
How many flights depart from California to London Heathrow Airport on average per week?
As of June 2025, there are 799 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?
As of June 2025, there are 12 operators available to choose from for flights from California to London Heathrow Airport.
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 Boeing 787-9 Dreamliner, making up 21.71% of the total bookings. Other popular models include Airbus A380-800 with 16.23%, Boeing 777 with 13.56%, and Boeing 777-300ER with 12.08%.
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 £300 | Free Cancellation | Rating 7.3 1,387 reviews | |||
| PriceFrom £378 | Free Cancellation | Rating 7.8 1,358 reviews | |||
| PriceFrom £381 | Free Cancellation | Rating 7.4 652 reviews | |||
| PriceFrom £386 | Free Cancellation | Rating 7.1 1,885 reviews | |||
| PriceFrom £388 | Free Cancellation | Rating 7.5 1,463 reviews | |||
| PriceFrom £413 | Free Cancellation | Rating 6.7 7,136 reviews | |||
| PriceFrom £422 | Free Cancellation | Rating 7.0 2,776 reviews | |||
| PriceFrom £425 | Free Cancellation | Rating 6.6 7,008 reviews | |||
| PriceFrom £429 | Free Cancellation | Rating 7.1 9,539 reviews | |||
| PriceFrom £437 | Free Cancellation | Rating 7.2 10,000 reviews |
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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?
Flights from California to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from California to London?
Once you have performed a search for California to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from California to London right now. Can momondo alert me if prices change?
If you are not ready to book a flight from California to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.