Cheap Flights Boston to London from £155

Flight FAQs

• Which airlines offer the cheapest flights from Boston (BOS) to London (LON)?

  Based on Trip.com data, United Airlines offers one-way fares as low as £155 on Cheapest nonstop routes (e.g. BOS to LHR on Wed, Aug 26), while Icelandair offers Cheapest nonstop round-trips from £384 departing on Fri, Oct 16 and returning on Wed, Oct 21.

• Which airlines offer direct flights from Boston to London?

  At the moment, you can catch a direct flight from Boston to London with the following airlines, including: Virgin Atlantic British Airways Jetblue Airways Delta Air Lines American Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is the flight from Boston (BOS) to London (LON)?

  It takes about 6 hours 42 minutes to fly from Boston (BOS) to London (LON).

• When is the best time to book flights from Boston to London?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Boston to London is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Boston to London?

  Based on Trip.com data in the past 4 weeks, there is 55 flight per week flying from Boston to London. You can check the weekly schedule for popular airlines on this route below: British Airways: S/M/T/W/T/F/S -- BA238 (08:10) American Airlines: S/M/T/W/T/F/S -- AA6981 (08:10)

• How can I find the best deals on flights from Boston to London?

  To find best deals on flights from Boston to London, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Aug 26, with one-way flights priced at just £155.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Virgin Atlantic.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for London travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When is the best time to book a flight from Boston to London to get the best price?

  The cheapest months to fly from Boston to London is October, when demand for travel is lower.

• Which upcoming date is the cheapest for flights from Boston to London?

  After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Boston to London on August 22, 2026 with Icelandair, with prices starting at £175.

• Which airports can I fly through when travelling to London from Boston?

  You can land at any one of the following hubs in London, with Boston Logan International Airport to Heathrow Airport (BOS-LHR) is by far the most common option on this route: London City Airport (LCY) London Gatwick Airport (LGW) Heathrow Airport (LHR) London Luton Airport (LTN) London Southend Airport (SEN) London Stansted Airport (STN).

• What is the time difference between Boston and London?

  The time difference between London and Boston is 5h.

• How can I change or cancel my flight ticket from Boston to London?

  Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from Boston to London?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Boston to London is £290. Fares vary by travel date, airline and availability.

• What is the average cost of a return flight from Boston to London?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Boston to London is £675. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from Boston to London on Trip.com?

  Enter Boston and London, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveller details and complete payment to receive your confirmation.

• Are there budget airlines on the Boston to London route?

  Jetblue Airwaysare the most popular budget airlines flying from Boston to London. Check baggage, seat and payment fees before comparing the final price.