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
20/10/25
1 Stopover (CPH)
SK0500, SK0927
13h 55min
Return
11/11/25
1 Stopover (CPH)
SK0928, SK1501
23h 05min
SAS Scandinavian Airlines
£365
Best option
London
Boston
Outbound
17/06/25
direct
B61926
07h 53min
Return
01/07/25
direct
B62104
06h 40min
JetBlue Airways ?
£413
London
Boston
Pay attention to transfer at connecting flight
Outbound
22/06/25
3 Stopovers (DUB, YHZ, YYZ)
FR0123, WS0051, WS0277, AC8698
42h 41min
Return
05/07/25
1 Stopover (MCO)
NK2093, Z00784
35h 34min
Ryanair, Westjet, Air Canada
£563
London
Boston
Outbound
03/09/25
1 Stopover (FRA)
LH0923, DE2038
11h 25min
Return
15/09/25
1 Stopover (FRA)
DE2039, LH0904
13h 25min
Lufthansa, Condor
£738
London
Boston
Outbound
20/10/25
1 Stopover (CPH)
SK0500, SK0927
13h 55min
Return
11/11/25
2 Stopovers (CPH, OSL)
SK0928, SK1462, SK0805
16h 00min
SAS Scandinavian Airlines
£367
London
Boston
Outbound
11/09/25
1 Stopover (KEF)
FI0473, FI0633
11h 20min
Return
15/09/25
1 Stopover (KEF)
FI0630, FI0472
12h 45min
Icelandair
£376
London
Boston
Outbound
03/09/25
1 Stopover (ZRH)
LX0319, LX0052
12h 45min
Return
15/09/25
1 Stopover (YUL)
AC8611, AC0866
30h 50min
Swiss International Air Lines
£408
London
Boston
Outbound
20/10/25
1 Stopover (LIS)
TP1363, TP0215
19h 05min
Return
11/11/25
1 Stopover (LIS)
TP0218, TP1366
23h 35min
TAP Air Portugal
£425
London
Boston
Outbound
09/10/25
1 Stopover (FRA)
LH0903, LH0420
14h 40min
Return
14/10/25
1 Stopover (YUL)
AC0751, AC0866
15h 10min
Lufthansa ?
£425
London
Boston
Outbound
03/09/25
1 Stopover (ZRH)
UA9759, UA9722
11h 10min
Return
15/09/25
1 Stopover (YUL)
UA8363, UA8296
30h 50min
United Airlines ?
£433
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 £
655 £
1 055 £
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 £
39 %
Direct flights
07h 20min, from 734 £
30 %
1 stopover Copenhagen
13h 45min, from 709 £
17 %

Important flight information

Flight information: London - Boston

Outbound and return from 364,24 £
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