Cheap Flights London to Boston from £299

Flight FAQs

• Which airlines offer the cheapest flights from London to Boston?

  Based on Trip.com data, Icelandair offers Cheapest nonstop one-way flights from £299 (for example, LGW–BOS on Wed, Nov 25). For a Cheapest nonstop return flight, Scandinavian Airlines offers fares from £335, departing on Wed, Nov 11 and returning on Tue, Nov 17.

• Which airlines offer direct flights from London to Boston?

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

• How long is a flight from London to Boston?

  A flight from London (LON) to Boston (BOS) takes an average of 7 hours 36 minutes.

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

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from London to Boston 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 from London to Boston each week?

  On average, 48 direct flights operate each week between London and Boston. See below the schedules of the main airlines serving this route:
  British Airways: S/M/T/W/T/F/S – BA1545 (departure at 10:30) TAP Air Portugal: S/M/T/W/T/F/S – TP4289 (departure at 08:56) Iberia: S/M/T/W/T/F/S – IB4261 (departure at 10:30)

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

  Here are some tips for finding the best flight deals from London to Boston on Trip.com:
  · Be flexible with your travel dates. The cheapest flight is currently on Wed, Nov 25, with one-way fares from just £299.
  · Compare airlines. American Airlines currently offers the lowest fares on this route.
  · Set up a price alert to track fare changes without searching every day.
  · Check Trip.com regularly for flight deals and available promo codes.
  · Avoid peak season or book early. July is generally the busiest month for travel to Boston.
  · Get exclusive promo codes on the Trip.com app.

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

  The cheapest month to book a flight from London to Boston is usually October, when demand is lower.

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

  After crunching the numbers on our October flight calendar, it's currently cheapest to fly from London to Boston on October 9, 2026 with Icelandair, with prices starting at £352.

• Which airports should you choose for flights from London to Boston?

  Flights to Boston can arrive at: Hartford Barnes Airport (BNH), Boston Logan International Airport (BOS) and Portsmouth International Airport (PSM). The most common route connects Heathrow Airport and Boston Logan International Airport (LHR–BOS).

• What is the time difference between London and Boston?

  The time difference between Boston and London is 5h.

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

  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 price of a one-way flight from London to Boston?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from London to Boston is £691. Fares vary by travel date, airline and availability.

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

  Based on Trip.com data for flights departing in the next 30 days, the average return fare from London to Boston is £735. Fares vary by travel date, airline and availability.

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

  Enter London and Boston, 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 London to Boston route?

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