Our cheapest offers for flights from London to Boston

Here you can compare cheap flights from London (LON) to Boston (BOS) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Boston. Prices and availability may change at any time.

	Outbound	Return	Airlines	Price
London Boston	Outbound 08/12/25 direct AY3779 07h 25min	Return 24/12/25 1 Stopover (JFK) AY4256, AY3774 09h 41min	Finnair	£405
London Boston	Outbound 17/10/25 direct AY4186 07h 30min	Return 25/10/25 direct AY4185 06h 40min	Finnair	£436 found 3 days ago
London Boston	Outbound 05/11/25 direct AY5503 07h 40min	Return 23/11/25 direct AY5438 06h 30min	Finnair	£492

Important flight information

Flight information: London - Boston

Outbound and return from	300,99 £
Flight duration	min. 07:30 / max. 07:58
Return flight duration	min. 06:20/ max. 06:42
Distance	5264 km
Flights per week	50
Departure airport	Airport London (LCY, LGW, LHR, LTN, STN, SEN) (LON)
Arrival airport	Airport Boston Logan (BOS)
Destination country	Flights to United States

Alternative routes to United States

Flight London - New York from 213 £
Flight London - Los Angeles from 231 £
Flight London - San Francisco from 355 £
Flight London - Miami from 303 £
Flight London - Orlando from 251 £
Flight London - Chicago from 298 £
Flight London - Las Vegas from 404 £
Flight London - Seattle-Tacoma from 411 £
Flight London - Santa Ana, CA from 413 £
Flight London - Austin from 594 £

Alternative flights to Boston

Flight London Heathrow - Boston from 301 £
Flight London Gatwick - Boston from 330 £
Flight London City - Boston from 406 £

Flights from London to Boston with Finnair

Our cheapest offers for flights from London to Boston

London (LCY, LGW, LHR, LTN, STN, SEN)

Boston Logan

Finnair

Important flight information

Flight information: London - Boston

Alternative routes to United States

Alternative flights to Boston

Flight destinations with a similar price