Flights from London Heathrow to Boston

Our cheapest offers for flights from London Heathrow to Boston

Here you can compare cheap flights from London Heathrow (LHR) 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 Shop Baggage Price
London Heathrow
Boston
Outbound
19/02/26
1 Stopover (MUC)
LH2473, LH0424
12h 25min
Return
22/02/26
1 Stopover (IAD)
LH7451, LH9259
11h 24min
Lufthansa ?
£327
Best option
London Heathrow
Boston
Outbound
20/03/26
direct
BA0239
07h 45min
Return
17/04/26
direct
BA1540
06h 30min
British Airways ?
£507
London Heathrow
Boston
Outbound
22/12/25
2 Stopovers (FRA, JFK)
LH0921, DE2016, B60918
19h 03min
Return
10/01/26
2 Stopovers (JFK, FRA)
B60217, DE2017, LH0900
19h 15min
Lufthansa, Condor, JetBlue Airways
£890
London Heathrow
Boston
Outbound
19/02/26
1 Stopover (FRA)
LH0923, LH0422
11h 05min
Return
22/02/26
1 Stopover (YYZ)
AC0767, AC0854
19h 15min
Lufthansa ?
£328
London Heathrow
Boston
Outbound
19/02/26
1 Stopover (MUC)
LH2473, LH0424
12h 25min
Return
22/02/26
1 Stopover (MUC)
LH0425, LH2476
14h 10min
Lufthansa
£336
London Heathrow
Boston
Outbound
25/12/25
1 Stopover (ZRH)
LX0333, LX0052
11h 15min
Return
13/01/26
1 Stopover (ZRH)
LX0053, LX0332
09h 50min
Swiss International Air Lines ?
£351
London Heathrow
Boston
Outbound
25/12/25
1 Stopover (EWR)
OS7795, OS7737
11h 35min
Return
13/01/26
1 Stopover (ZRH)
LX0053, LX0332
09h 50min
Austrian Airlines ?
£363
London Heathrow
Boston
Outbound
31/01/26
1 Stopover (KEF)
FI0451, FI0631
10h 35min
Return
03/02/26
1 Stopover (KEF)
FI0630, FI0454
18h 40min
Icelandair
£383
London Heathrow
Boston
Outbound
31/01/26
1 Stopover (KEF)
FI0451, FI0631
10h 35min
Return
03/02/26
1 Stopover (KEF)
FI0630, FI0454
18h 40min
Icelandair
£387
London Heathrow
Boston
Outbound
31/01/26
1 Stopover (KEF)
FI0451, FI0631
10h 35min
Return
03/02/26
1 Stopover (KEF)
FI0630, FI0454
18h 40min
Icelandair
£388
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from London Heathrow to Boston

Favourite airline: Icelandair
Flight tickets on the route London Heathrow – Boston are most frequently booked with Icelandair.
Icelandair
35 %
British Airways
15 %
SAS
15 %
Stopover flights are the cheapest connection
Compared to direct flights, flights with a stopover on this route are on average 11 % cheaper.
non stop flight
1 stop
2 stops
07h 20min
29h 25min
16h 00min
734 £
660 £
1.055 £
Favourite connection: via Reykjavik-Keflavik
The most popular flights on this route are via Reykjavik-Keflavik and are booked by 43 % of all travellers.
Route
bookings
1 stopover Reykjavik-Keflavik International
29h 25min, from 660 £
43 %
Direct flights
07h 20min, from 734 £
33 %
1 stopover Copenhagen
13h 45min, from 709 £
19 %

Important flight information

Flight information: London Heathrow - Boston

Outbound and return from 326,22 £
Flight duration min. 07:40 / max. 07:58
Return flight duration min. 06:20/ max. 06:42
Distance 5245 km
Flights per week 42
Departure airport Airport London Heathrow (LHR)
Arrival airport Airport Boston Logan (BOS)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Boston
Flight destinations with a similar price