Cheap flights from London Heathrow Airport to North America from £251

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 £506. The month of January is another great option to travel to North America, with average flight prices from London Heathrow Airport averaging around £530.

The cheapest day to depart from London Heathrow Airport to North America is on a Wednesday when prices can be found for as low as £559. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around £625. 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 at midday. Our users have found flights to North America at midday for as low as £541. Flights in the evening are often more expensive, with an average ticket price of £616.

Fly from London Heathrow to Toronto Pearson 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 £539 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 £486 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.

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

Virgin Atlantic, British Airways and Air Canada 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 39% of people opting to fly with this airline when travelling to North America. Keep in mind that there are 27 different airlines that fly to North America on a routine basis, so you have a few additional options to choose from.

Historically, on average around 12% of flights between London and North America have experienced a delay on any given week. The average delay length over the past 12 months has been 158 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Delta have had the fewest delays on this route over the last 12 months, with about 8% of their flights experiencing any sort of delay.

As of November 2026, 282 flights take off from London Heathrow Airport and land in North America each day. The most common flight departure time for this route is 11:00, with 47% of daily flights taking off in the afternoon.

As of November 2026, 1,977 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 17% of weekly flights taking off on this day.