flight_takeoff BOS → LHR

Cheap Flights from Boston to London

Compare fares on the long-haul international flight from Boston to London — a northeastbound route of about 3,256 miles, typically flown nonstop in around 7h.

straighten

Distance

3,256 mi

5,240 km

schedule

Est. flight time

7h

nonstop

flight

Nonstop service

Available

9 carriers

language

Time difference

5 hours ahead

London

Flying from Boston to London

Flights from General Edward Lawrence Logan International Airport (BOS) to London Heathrow Airport (LHR) cover roughly 3,256 miles (5,240 km) on a northeastbound heading, a nonstop flight of about 7h. The route crosses 5 time zones — London is 5 hours ahead of Boston. It's a competitive route served by 9 airlines. As an international route, make sure your passport is valid and allow extra time for customs and immigration on arrival.

Lets Fly Travel compares live fares across hundreds of airlines to find the best deal on this route — and every booking is reviewed by a real travel agent before ticketing.

Airlines on this route

Carriers that have operated nonstop service between BOS and LHR include:

flightAir France flightAmerican Airlines flightBritish Airways flightDelta Air Lines flightFinnair flightIberia Airlines flightKLM Royal Dutch Airlines flightTransaero Airlines

Airline availability and fares change over time — search your dates for current options.

Best time to fly Boston to London

Fare patterns and travel conditions vary by season. Here's what to expect on the BOS–LHR route throughout the year.

Jan–Feb

Winter is often off-peak for London — expect fewer crowds and lower fares on the BOS–LHR route. Book early for spring breaks.

Mar–May

Spring brings pleasant weather to many destinations. Fares on the Boston–London route can spike around school holidays — compare a few nearby dates.

Jun–Aug

Peak summer travel season. Boston to London fares are typically at their highest. Book at least 6–8 weeks ahead and consider mid-week departures.

Sep–Oct

Shoulder season is often the sweet spot: good weather, thinner crowds, and more competitive fares on the BOS–LHR route.

Nov–Dec

Thanksgiving and Christmas drive fare spikes. If you're flying Boston to London for the holidays, book as early as possible.

flight_land Arriving at

London Heathrow Airport

London is served by London Heathrow Airport (IATA: LHR , ICAO: EGLL). The airport is located in United Kingdom. As an international arrival, allow additional time for customs and immigration.

IATA Code

LHR

Flight Time

~7h

Distance

3,256 mi

tips_and_updates Arrival tips

  • ›Check in online to save time at the airport.
  • ›Arrive 3 hours before departure.
  • ›Carry a valid passport and check visa requirements.
  • ›Compare fares across several nearby dates for best value.

Boston to London — FAQs

How long is the flight from Boston to London? expand_more
A nonstop flight from Boston (BOS) to London (LHR) takes approximately 7h, covering a distance of about 3256 miles (5240 km). Actual flight time varies with aircraft, routing and winds.
Which airlines fly from Boston to London? expand_more
Airlines that have operated nonstop service on the BOS–LHR route include Air France, American Airlines, British Airways, Delta Air Lines, Finnair, Iberia Airlines, KLM Royal Dutch Airlines, Transaero Airlines. Use our search to compare current carriers, schedules and fares.
Is there a nonstop flight from Boston to London? expand_more
Yes. The BOS–LHR route has nonstop service. Nonstop availability can vary by season and day of week, so check live results for your dates.
How far is London from Boston? expand_more
The distance from Boston (BOS) to London (LHR) is about 3256 miles (5240 km) as the crow flies.
What is the time difference between Boston and London? expand_more
London is 5 hours ahead of Boston. Factor the time change into your arrival and connection planning.
When is the best time to book flights from Boston to London? expand_more
For international trips like Boston to London, booking roughly 2–6 months ahead and flying mid-week (Tuesday/Wednesday) tends to surface the lowest fares. Set up a search early and compare a few date options.
Do I need a passport to fly from Boston to London? expand_more
Yes. Flights from Boston to London are international, so you'll need a valid passport — and possibly a visa, depending on your nationality and London's entry requirements. Check the destination's current entry rules before you travel.

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