£189 Find Cheap Flights from Boston to London Heathrow Airport – Compare and Save

If you are looking for a flight deal from Boston to London Heathrow Airport, look for departures on Mondays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from London Heathrow Airport, Wednesday is the cheapest day to fly and Sunday is the most expensive.

The cheapest month for flights from Boston to London Heathrow Airport is January, where tickets cost £390 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £771 and £660 respectively.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at £563 on average.

To get a below average price on the flight from Boston to London Heathrow Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

In the past 5 days, the cheapest return tickets from Boston to London Heathrow Airport were found on Scandinavian Airlines (£459) and Icelandair (£463).

Boston and London Heathrow Airport are connected by different airlines. The airlines that fly that route the most regularly are British Airways (21 flights per week), Virgin Atlantic (14 flights per week), and Delta (7 flights per week).

Weekly flights between Boston and London historically see delays in approximately 11% of cases, with the average delay over the past year being 146 minutes.

Typically, flights leaving in the morning tend to face fewer delays, whereas flights at night have historically encountered delays more often.

Statistically, Monday is the day of the week with the fewest delays on this flight route, while Sunday has typically experienced more delays than other days.

Based on our data, American Airlines have experienced the fewest delays on this route in the past 12 months, with only about 9% of their flights encountering any delays.

Shannon (SNN) is the top choice – 50% of KAYAK users who clicked on one-stop flights from Boston to London Heathrow Airport picked an itinerary connecting there.

Flights via Shannon (SNN) offer the most affordable fares, with an average price of £363 for a return.

Consider flying via Shannon (SNN) for the shortest journey. The average one-way travel time for flights connecting there is 9h 35m.

If you prefer a quick connection, Frankfurt am Main (FRA) often has the shortest stopovers from Boston to London Heathrow Airport, with an average time of 1h 40m.

There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Each day, there are 8 direct flights that take off from Boston and land in London Heathrow Airport, with an average flight time of 6h 43m. The most common departure time is 19:00 and most flights take off in the evening. Each week, there are 56 flights and there are the same number of flights each day (8).