Cheap flights from London Heathrow Airport to North America from £257

In general, February is the cheapest month to fly from London Heathrow Airport to North America. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £484. The month of September is another great option to travel to North America, with average flight prices from London Heathrow Airport averaging around £513.

The cheapest day to depart from London Heathrow Airport to North America is on a Thursday when prices can be found for as low as £517. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around £580. 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 Heathrow Airport 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 £535. Flights in the evening are often more expensive, with an average ticket price of £588.

Fly from London Heathrow to Boston Logan Intl for the best London Heathrow - North America flight prices

You are more likely to see cheaper flights to North America from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to North America for around £484 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 Heathrow Airport for as low as £425 on momondo.

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

SWISS, Icelandair, and Delta are the most popular carriers operating from London Heathrow to North America

Virgin Atlantic, British Airways and Lufthansa are the top three most popular airlines that fly to North America from London Heathrow Airport according to our data. Virgin Atlantic is the first choice among our users, with 49% of people opting to fly with this airline when travelling to North America. Keep in mind that there are 25 different airlines that fly to North America on a routine basis, so you have a few additional options to choose from.

As of June 2026, 312 flights take off from London Heathrow Airport and land in North America each day. The most common flight departure time for this route is 16:00, with 48% of daily flights taking off in the afternoon.

As of June 2026, 2,185 flights take off from London Heathrow Airport and land in North America each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.