Cheap flights from Boston to London from $316

If you aren’t able to travel during the month of October, then book flights to London from Boston during January instead. Flights to London in January, while not as cheap as those in October, still average around $737.

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as $779. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Boston to London for around $817.

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 $880 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 $849 on momondo.

There are 3 cabin classes available to choose from on Boston Logan Intl to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

As of February 2026, prices for Boston to London flights are approximately 15% more expensive when compared to flights at the same time last year.

Historically, on average around 11% 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 February 2026, there are 29 flights per day flying from Boston to London. The most common time of day flights depart is 19:00, with 79% of flights taking off in the evening.

209 flights are operational weekly from Boston to London as of February 2026. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.