Cheap flights from London to North America from £275

In general, February is the cheapest month to fly from London to North America. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £479. The month of January is another great option to travel to North America, with average flight prices from London averaging around £489.

The cheapest day to depart from London to North America is on a Thursday when prices can be found for as low as £535. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around £596. These prices are subject to change though, so be sure to set up a Price Alert for flights to North America.

Our data shows that the cheapest London to North America flights are usually those with departure times in the morning. Our users have found flights to North America in the morning for as low as £556. Flights in the evening are often more expensive, with an average ticket price of £590.

Fly from London Heathrow to Atlanta Hartsfield-Jackson for the best London - North America flight prices

You are more likely to see cheaper flights to North America from London when booking weeks ahead of your departure date. In general, you can expect to find flights to North America for around £504 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to North America from London for as low as £449 on momondo.

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

Lufthansa, United Airlines, and SWISS are the most popular carriers operating from London to North America

Virgin Atlantic, British Airways and Air Canada are the top three most popular airlines that fly to North America from London according to our data. Virgin Atlantic is the first choice among our users, with 41% of people opting to fly with this airline when travelling to North America. Keep in mind that there are 30 different airlines that fly to North America on a routine basis, so you have a few additional options to choose from.

The number of flights available between London and North America is 215 per day as of July 2026. The most frequent departure time is 16:00, with 50% of daily flights leaving in the afternoon.

As of July 2026, 1,505 flights take off from London and land in North America each week. The most common flight departure day for this route is Thu, with 16% of weekly flights taking off on this day.