Cheap flights from London Heathrow Airport to Boston from €338

The month of September is, on average, the cheapest month to fly to Boston from London Heathrow Airport, with most prices found around €462. The month of October is another great option to travel to Boston, with average flight prices from London Heathrow Airport averaging around €479.

The cheapest day to depart from London Heathrow Airport to Boston is on a Saturday when prices can be found for as low as €705. Flights from London Heathrow Airport to Boston on a Monday will generally be more expensive and average around €1,156. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Flying to Boston from London Heathrow Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as €590 when looking at flights departing in the morning. Flights in the evening are often more expensive, with an average ticket price of €1,054.

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

You are more likely to see cheaper flights to Boston from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around €541 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from London Heathrow Airport for as low as €484 on momondo.

There are 2 cabin classes available to choose from on London Heathrow to Boston Logan Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 19% on your flight if you consider stops on a London Heathrow Airport to Boston flight.

As of March 2026, prices for London Heathrow Airport to Boston flights are approximately 8% more expensive when compared to flights at the same time last year.

Historically, on average around 8% of flights between London and Boston have experienced a delay on any given week. The average delay length over the past 12 months has been 159 minutes.

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

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

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 4% of their flights experiencing any sort of delay.

As of March 2026, 30 flights take off from London Heathrow Airport and land in Boston each day. The most common flight departure time for this route is 13:00, with 51% of daily flights taking off in the afternoon.

As of March 2026, 210 flights take off from London Heathrow Airport and land in Boston each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.