£122 Find Cheap Flights from California to the United Kingdom

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Good to know - Cheap tickets from California to the United Kingdom

Low seasonFebruary
Cheapest flight£122
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly (45% more expensive on average)
Flight from Los Angeles to London Heathrow Airport

Flights from California to the United Kingdom: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from California to the United Kingdom 
Learn how KAYAK collects reviews and tips from users.
GeraldFlew with Virgin AtlanticSFO-LHRJun 2025
Virgin Atlantic uses terminal 3. Much faster clearing customs than terminal 5
Verified travelerFlew with American AirlinesSFO-LHRJun 2025
Large number of passengers on the flight so arrive early to the airport and to the boarding gate
PallaviFlew with British AirwaysSFO-LHRApr 2025
Eat at the lounge first so you are not stuck eating overcooked cheese ravioli
Verified travelerFlew with IberiaLAX-LHRJan 2025
Make sure you arrive early. Sometimes, the traffic getting to LAX can be a total nightmare.
WeiFlew with British AirwaysLAX-LHRSept 2024
Connection takes long, Make sure you plan enough time.
TapanFlew with British AirwaysSFO-LHROct 2024
Great baggage policy in BA.. The worst part was experience at London Heathrow airport. Security was slow, too many people. Almost lost connecting flight even with 2 hours layover.
Verified travelerFlew with British AirwaysLAX-LHRMar 2024
Pack your own food if you have dietary restrictions and fly other airlines if possible
MichelleFlew with British AirwaysLAX-LHRMay 2024
Make sure you separate your luggage tags from your tickets
ShaunaFlew with British AirwaysLAX-LHRDec 2023
I would suggest calling the airline to make sure that their TV screens work on the back of the seats, and if they don’t work that the entertainment option would work on your cell phones.

FAQs for booking flights from California to the United Kingdom

  • How does KAYAK find such low prices on flights from California to the United Kingdom?

    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 California to the United Kingdom.

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

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

    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 California to the United Kingdom 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 California to the United Kingdom?

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

  • Which airlines fly most frequently to the United Kingdom?

    California and United Kingdom are connected by different airlines. The airlines that fly that route the most regularly are British Airways (68 flights per week), American Airlines (62 flights per week), and Alaska Airlines (62 flights per week).

  • How many airports are there in the United Kingdom?

    There are 39 airports in the United Kingdom. The busiest airport is London Heathrow Airport (LHR), with 45% of all flights arriving there.

  • Which is the cheapest airport to fly into in the United Kingdom?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in the United Kingdom is London Gatwick Airport (LGW), with an average flight price of £137.

  • What is the cheapest day to fly to the United Kingdom?

    Based on KAYAK data, the cheapest day to fly to the United Kingdom is Monday when return tickets can be as cheap as £513. On the other hand, the most expensive day to fly is Saturday, when return prices are £586 on average.

  • What is the cheapest time of day to fly to the United Kingdom?

    The cheapest time of day to fly to the United Kingdom is generally in the evening, when retur flights cost £706 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally in the afternoon, which is peak travel time and where the average cost of a ticket is £929.

  • What is the cheapest flight to the United Kingdom?

    The cheapest ticket to the United Kingdom from California found in the last 72 hours was to London Gatwick Airport, at £150 return. The most popular route is Los Angeles (LAX) to London Gatwick Airport (LGW) and the cheapest return airline ticket found on this route in the last 72 hours was £150.

  • What is the cheapest month to fly from California to the United Kingdom?

    The cheapest month for flights from California to the United Kingdom is October, when tickets cost £457 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is £770 and £690 respectively.

  • How far in advance should I book a flight from California to the United Kingdom?

    To get a below-average price on a flight from California to the United Kingdom, you should book around 3 weeks before departure, which saves you about 30% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

  • How many cities have direct flights to the United Kingdom?

    From California, there are direct flights to the United Kingdom from 3 cities. The city with the most direct flights is Los Angeles, with 398 direct flights each week.

  • How many direct flights to the United Kingdom are there each day?

    There are around 107 direct flights from within California to the United Kingdom every day. Most flights (57%) depart in the afternoon.

  • How many direct flights to the United Kingdom are there each week?

    Each week there are around 749 direct flights from within California to the United Kingdom. The most common day for departures is Monday, with 14% of flights taking off on this day.

  • How long is the flight to the United Kingdom?

    An average direct flight from California to the United Kingdom takes 13h 49m, covering a distance of 5296 miles. The shortest route is Las Vegas (LAS) to London Heathrow Airport (LHR) with an average flight time of 9h 55m.

  • How many long-haul flights are there to the United Kingdom each week?

    There aren’t any medium-haul (3-6 hour flight duration) or short-haul (up to 3 hour flight duration) flights to the United Kingdom. Instead, there are 761 long-haul flights (6-12 hour flight duration), with the most arriving from Los Angeles.

  • What are the most popular destinations in the United Kingdom?

    Based on KAYAK flight searches, the most popular destination is London (91% of total searches to the United Kingdom). The next most popular destinations are Edinburgh (4%) and Manchester (2%). Searches for flights to Belfast (1%), to Southampton (1%), and to Birmingham (0%) are also popular.

Everything you need to know for your flight to the United Kingdom

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.
First Class flights to the United Kingdomfrom £5,567
Business Class flights to the United Kingdomfrom £990
Prem Econ Class flights to the United Kingdomfrom £728
Economy class flights to the United Kingdomfrom £111

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