Cheap flights from London to Boston from €398

The month of September is, on average, the cheapest month to fly to Boston from London, with most prices found around €449. The month of February is another great option to travel to Boston, with average flight prices from London averaging around €463.

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

You are more likely to see cheaper flights to Boston from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around €548 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 for as low as €480 on momondo.

There are 2 cabin classes available to choose from on London to Boston 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 to Boston flight.

As of April 2026, prices for London to Boston flights are approximately 35% more expensive when compared to flights at the same time last year.

Historically, on average around 9% 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 144 minutes.

Generally, flights departing at night 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 5% of their flights experiencing any sort of delay.

The number of flights available between London and Boston is 27 per day as of April 2026. The most frequent departure time is 09:00, with 44% of daily flights leaving at midday.

The number of flights available between London and Boston is 191 per week as of April 2026. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.