Flights from London to Boston

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 Shop Baggage Price
London
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
Boston
Outbound
22/10/25
direct
AF9645
07h 45min
Return
30/10/25
direct
AF9648
06h 50min
Air France ?
£334
London
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
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
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
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
London
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
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
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
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
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Tips and tricks to help you find cheap flights from London to Boston

Favourite airline: Icelandair
25 % of flights on the route London – Boston are booked with Icelandair.
Icelandair
25 %
British Airways
11 %
SAS
11 %
Stopover flights are the cheapest connection
Compared to flights with a stopover, direct flights are £79.00 more expensive on this route.
non stop flight
1 stop
2 stops
07h 20min
13h 50min
16h 00min
734 £GB
655 £GB
1 055 £GB
Favourite connection: via Reykjavik-Keflavik
39 % of tickets booked on this route are for flights via Reykjavik-Keflavik.
Route
bookings
1 stopover Reykjavik-Keflavik International
13h 50min, from 655 £GB
39 %
Direct flights
07h 20min, from 734 £GB
30 %
1 stopover Copenhagen
13h 45min, from 709 £GB
17 %

Important flight information

Flight information: London - Boston

Outbound and return from 291,99 £GB
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
Alternative flights to Boston
Flight destinations with a similar price