Cheap flights from London to Boston from €395

The month of February is, on average, the cheapest month to fly to Boston from London, with most prices found around €480. The month of September is another great option to travel to Boston, with average flight prices from London averaging around €516.

The cheapest day to depart from London to Boston is on a Thursday when prices can be found for as low as €486. Flights from London to Boston on a Saturday will generally be more expensive and average around €903. 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 - 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 €588 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 €553 on momondo.

There is only 1 cabin class 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.

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

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 154 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. Tuesday 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 39 per day as of August 2026. The most frequent departure time is 09:00, with 36% of daily flights leaving at midday.

The number of flights available between London and Boston is 274 per week as of August 2026. The most frequent departure day is Fri, with 17% of weekly flights leaving on this day.