$262 Find Cheap Flights from California to the United Kingdom - Compare and Save

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.

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 travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from California to the United Kingdom with an airline and back with another airline.

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.

Alaska Airlines connects California to the United Kingdom with 70 flights per week. British Airways also offers 70 flights per week, while American Airlines follows with 70 flights per week.

There are 40 airports in the United Kingdom. The busiest airport is London Heathrow Airport (LHR), with 46% of all flights arriving there.

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 $288.

Based on KAYAK data, the cheapest day to fly to the United Kingdom is Wednesday where round-trip tickets can be as cheap as $917. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $1,030 on average.

The cheapest time of day to fly to the United Kingdom is generally in the afternoon, when round-trip flights cost $804 on average. The most expensive time of day to fly to the United Kingdom is generally in the evening, which is peak travel time and where the average cost of a ticket is $989.

The cheapest ticket to the United Kingdom from California found in the last 5 days was to London Gatwick Airport, at $289 round-trip. The most popular route is Los Angeles (LAX) to London Gatwick Airport (LGW) and the cheapest round-trip airline ticket found on this route in the last 5 days was $289.

The cheapest month for flights from California to the United Kingdom is February, when tickets cost $428 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is $691 and $598 respectively.

To get a below average price on the flight from California to the United Kingdom, you should book around 4 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

From California, there are direct flights to the United Kingdom from 3 cities. The city with the most direct flights is Los Angeles, with 471 direct flights each week.

There are around 114 direct flights from within California to the United Kingdom every day. Most flights (47%) depart in the afternoon.

Each week there are around 797 direct flights from within California to the United Kingdom. The most common day for departures is Saturday, with 15% of flights taking off on this day.

An average nonstop flight from California to the United Kingdom takes 14h 21m, covering a distance of 5318 miles. The shortest route is Las Vegas (LAS) to London Heathrow Airport (LHR) with an average flight time of 9h 55m.

There are not 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 797 long-haul flights (6-12 hour flight duration), with the most arriving from Los Angeles.

Based on KAYAK flight searches, the most popular destination is London (94% of total searches to the United Kingdom). The next most popular destinations are Edinburgh (3%) and Manchester (2%). Searches for flights to Birmingham (1%), to Southampton (0%) and to Belfast (0%) are also popular.