Flights from Boston to London

Our cheapest offers for flights from Boston to London

Here you can compare cheap flights from Boston (BOS) to London (LON) 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 London. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Boston
London
Outbound
12/01/25
1 Stopover (KEF)
FI0630, FI0450
10h 00min
Return
-
Icelandair
$1,094
Boston
London
Outbound
02/13/26
1 Stopover (DUB)
EI0132, EI0152
09h 55min
Return
02/26/26
1 Stopover (SNN)
EI0381, EI0135
11h 50min
Aer Lingus Irish Airlines ?
$477
Best option
Boston
London
Outbound
04/03/26
direct
BA0212
06h 35min
Return
04/16/26
direct
BA0203
07h 30min
British Airways ?
$504
Boston
London
Outbound
02/13/26
1 Stopover (DUB)
EI0132, EI0156
12h 00min
Return
02/26/26
1 Stopover (SNN)
EI0381, EI0135
11h 50min
Aer Lingus Irish Airlines
$480
Boston
London
Outbound
02/13/26
1 Stopover (DUB)
EI0132, EI0154
10h 55min
Return
02/26/26
1 Stopover (SNN)
EI0381, EI0135
11h 50min
Aer Lingus Irish Airlines
$484
Boston
London
Outbound
02/13/26
1 Stopover (DUB)
EI0132, EI0156
12h 00min
Return
02/26/26
1 Stopover (SNN)
EI0381, EI0135
11h 50min
Aer Lingus Irish Airlines ?
$497
Boston
London
Outbound
04/03/26
1 Stopover (YYZ)
UA8529, UA8412
24h 35min
Return
04/16/26
1 Stopover (YUL)
UA8035, UA8416
29h 22min
United Airlines ?
$500
Boston
London
Outbound
02/13/26
1 Stopover (DUB)
EI0132, EI0156
12h 00min
Return
02/26/26
1 Stopover (SNN)
EI0381, EI0135
11h 50min
Aer Lingus Irish Airlines ?
$501
Boston
London
Outbound
02/13/26
direct
BA0238
06h 30min
Return
02/26/26
direct
BA0239
07h 45min
British Airways ?
$518
Boston
London
Outbound
02/10/26
1 Stopover (ZRH)
LX0053, LX0332
10h 10min
Return
02/26/26
1 Stopover (ZRH)
LX0333, LX0052
11h 35min
Swiss International Air Lines ?
$520
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Boston to London

Favorite airline: Icelandair
61 % of travelers choose to book flights on this route with Icelandair, United Airlines and Air Canada.
Icelandair
28 %
United Airlines
17 %
Air Canada
16 %
Direct flights are more expensive
Flights with a stopover are on average $131.00 cheaper than direct flights.
non stop flight
1 stop
2 stops
06h 50min
18h 20min
21h 30min
564 USD
433 USD
583 USD
Favourite connection: via Reykjavik-Keflavik
The most popular route is via Reykjavik-Keflavik and is booked by 35 % of all travelers.
Route
bookings
1 stopover Reykjavik-Keflavik International
18h 20min, from 433 USD
35 %
1 stopover Montréal-Pierre Elliott Trudeau International Airport
30h 25min, from 537 USD
26 %
Direct flights
06h 50min, from 564 USD
20 %

Important flight information

Flight information: Boston - London

Cheapest outbound flight from 1 093,52 USD
Roundtrip from 476,57 USD
Flight duration min. 06:20 / max. 06:42
Return flight duration min. 07:30/ max. 07:58
Distance 5264 km
Flights per week 50
Departure airport Airport Boston Logan International Airport, MA (BOS)
Arrival airport Airport London, all Airports (LON)
Destination country Flights to United Kingdom
Alternative routes to United Kingdom
Alternative flights to London
Flight destinations with a similar price
Flight destinations with a similar price