Cheap flights from London Heathrow Airport to Boston from €423

The month of February is, on average, the cheapest month to fly to Boston from London Heathrow Airport, with most prices found around €506. The month of March is another great option to travel to Boston, with average flight prices from London Heathrow Airport averaging around €575.

The cheapest day to depart from London Heathrow Airport to Boston is on a Thursday when prices can be found for as low as €500. Flights from London Heathrow Airport to Boston on a Saturday will generally be more expensive and average around €946. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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 €629 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 €601 on momondo.

There is only 1 cabin class available to choose from on London Heathrow Airport to Boston flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between London Heathrow Airport to Boston.

Historically, on average around 10% 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 160 minutes.

Generally, flights departing in the morning 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. Thursday 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 6% of their flights experiencing any sort of delay.

As of October 2026, 26 flights take off from London Heathrow Airport and land in Boston each day. The most common flight departure time for this route is 09:00, with 41% of daily flights taking off at midday.

As of October 2026, 188 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 18% of weekly flights taking off on this day.