Cheap flights from Boston to London from $423

If you aren’t able to travel during the month of January, then book flights to London from Boston during September instead. Flights to London in September, while not as cheap as those in January, still average around $759.

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

You are more likely to see cheaper flights to London from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $890 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Boston for as low as $832 on momondo.

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

As of May 2026, prices for Boston to London flights are approximately 13% cheaper when compared to flights at the same time last year.

Historically, on average around 10% of flights between Boston and London have experienced a delay on any given week. The average delay length over the past 12 months has been 142 minutes.

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

Wednesday 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 7% of their flights experiencing any sort of delay.

As of May 2026, there are 32 flights per day flying from Boston to London. The most common time of day flights depart is 19:00, with 100% of flights taking off in the evening.

229 flights are operational weekly from Boston to London as of May 2026. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.