Cheap flights from Massachusetts to London from $224

The cheapest month to fly to London from Massachusetts is in October. Flight prices, which tend to average around $517, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Massachusetts averaging around $522.

The cheapest day to depart from Massachusetts to London is on a Tuesday. Travelers who choose to depart for London on a Tuesday will often find tickets for as low as $657. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $709. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Flying to London from Massachusetts in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $613 when looking at flights departing in the afternoon. Flights to London are more costly in the evening, with an average ticket price of $691. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to London from Massachusetts when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $623 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Massachusetts for as low as $602 on momondo.

There are 4 cabin classes available to choose from on Massachusetts to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Delta, KLM, and United Airlines are the most popular carriers operating from Massachusetts to London

British Airways, Delta and American Airlines are the top three most popular airlines that fly to London from Massachusetts according to our data. British Airways is the first choice among our users, with 53% of people opting to fly with this airline when traveling to London. Keep in mind that there are 18 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

The number of flights available between Massachusetts and London is 26 per day as of February 2026. The most frequent departure time is 7:00PM, with 82% of daily flights leaving in the evening.

The number of flights available between Massachusetts and London is 185 per week as of February 2026. The most frequent departure day is Wed, with 17% of weekly flights leaving on this day.