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
01/11/25
1 Stopover (KEF)
FI0455, FI0635
19h 00min
Return
09/11/25
1 Stopover (KEF)
FI0634, FI0450
18h 15min
Icelandair
£292
Best option
London Heathrow
Boston
Outbound
22/10/25
direct
AF9645
07h 45min
Return
30/10/25
direct
AF9648
06h 50min
Air France ?
£334
London Heathrow
Boston
Pay attention to transfer at connecting flight
Outbound
14/10/25
1 Stopover (BCN)
VY6651, IB2625
16h 20min
Return
01/11/25
direct
BA0238
06h 30min
Vueling Airlines, Iberia
£337
London Heathrow
Boston
Outbound
19/10/25
1 Stopover (FRA)
LH0923, DE2038
11h 30min
Return
27/10/25
2 Stopovers (JFK, FRA)
B60517, DE2017, LH0902
16h 05min
Lufthansa, Condor
£680
London Heathrow
Boston
Outbound
10/11/25
1 Stopover (ZRH)
LX0325, LX0052
32h 10min
Return
28/11/25
1 Stopover (ZRH)
LX0053, LX0318
32h 25min
Swiss International Air Lines
£301
London Heathrow
Boston
Outbound
02/11/25
1 Stopover (VIE)
OS0340, OS0031
13h 05min
Return
10/11/25
1 Stopover (EWR)
UA1783, OS7792
10h 11min
Austrian Airlines
£307
found 3 days ago
London Heathrow
Boston
Outbound
28/10/25
1 Stopover (SNN)
EI0381, EI0135
11h 50min
Return
05/11/25
1 Stopover (SNN)
EI0134, EI0380
08h 50min
Aer Lingus Irish Airlines
£317
London Heathrow
Boston
Outbound
31/10/25
1 Stopover (MUC)
LH2485, LH0424
17h 00min
Return
08/11/25
1 Stopover (YYZ)
AC0767, AC0854
19h 15min
Lufthansa ?
£319
London Heathrow
Boston
Outbound
17/10/25
1 Stopover (ZRH)
UA9761, UA9804
11h 45min
Return
25/10/25
1 Stopover (EWR)
UA3432, UA0904
11h 51min
United Airlines ?
£326
London Heathrow
Boston
Outbound
06/11/25
1 Stopover (LIS)
TP1367, TP0215
12h 45min
Return
24/11/25
1 Stopover (LIS)
TP0218, TP1352
13h 35min
TAP Air Portugal ?
£328
Prices based on recent searches, subject to last-minute changes
Page 1 / 5

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 GBP
660 GBP
1 055 GBP
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 GBP
43 %
Direct flights
07h 20min, from 734 GBP
33 %
1 stopover Copenhagen
13h 45min, from 709 GBP
19 %

Important flight information

Flight information: London Heathrow - Boston

Outbound and return from 291,99 GBP
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