Cheap flights from London to Boston from C$ 669

The cheapest month to fly to Boston from London is in February. Flight prices, which tend to average around C$ 789, are often lower during this time because this is during the off-season. If you are unable to visit Boston during the month of February, then departing from London during the month November is also very affordable. Most momondo users find prices during this month for around C$ 905.

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 C$ 990 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from London for as low as C$ 950 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.

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 159 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 has had the least delays on this route over the last 12 months, with about 6% of their flights experiencing any sort of delay.

27 flights are operational daily from London to Boston as of October 2026. The most popular departure time for this route is 9:00a.m., with 44% of flights per day taking off in the afternoon.

As of October 2026, 192 flights take off from London and land in Boston each week. The most common flight departure day for this route is Sun, with 18% of weekly flights taking off on this day.