Cheap flights from the United Kingdom to California from £252

If you are unable to visit California during the month of February, then departing from United Kingdom during the month January is also very affordable. Most momondo users find prices during this month for around £513.

The cheapest day to depart on your flight to California is on a Thursday when prices can be found for as low as £527. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from United Kingdom because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £592.

The cheapest time of day to fly to California is in the morning when flights can be purchased for as low as £533. In contrast, the most expensive time of day to depart to California is in the afternoon when prices are around £568.

Fly from London Heathrow to San Francisco for the best United Kingdom - California flight prices

You are more likely to see cheaper flights to California from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to California for around £517 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to California from United Kingdom for as low as £475 on momondo.

There are 4 cabin classes available to choose from on United Kingdom to California flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Austrian Airlines, TAP AIR PORTUGAL, and United Airlines are the most popular carriers operating from United Kingdom to California

British Airways, Virgin Atlantic and Aer Lingus are the top three most popular airlines that fly to California from United Kingdom according to our data. British Airways is the first choice among our users, with 44% of people opting to fly with this airline when travelling to California. Keep in mind that there are 21 different airlines that fly to California on a routine basis, so you have a few additional options to choose from.

As of October 2026, 47 flights take off from United Kingdom and land in California each day. The most common flight departure time for this route is 10:00, with 56% of daily flights taking off in the afternoon.

As of October 2026, 333 flights take off from United Kingdom and land in California each week. The most common flight departure day for this route is Wed, with 27% of weekly flights taking off on this day.