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
11/10/25
1 Stopover (OPO)
TP1329, TP0227
13h 15min
Return
29/10/25
1 Stopover (LIS)
TP0218, TP1334
10h 45min
TAP Air Portugal
£330
found 3 days ago
Best option
London
Boston
Outbound
11/10/25
direct
BA0203
07h 35min
Return
29/10/25
direct
BA0202
06h 40min
British Airways ?
£422
found 3 days ago
London
Boston
Pay attention to transfer at connecting flight
Outbound
20/10/25
2 Stopovers (CDG, KEF)
U28411, OG0401, OG0111
15h 30min
Return
11/11/25
2 Stopovers (KEF, CDG)
OG0112, OG0400, U28406
20h 20min
easyJet, Play ?
£573
London
Boston
Outbound
09/10/25
1 Stopover (FRA)
LH0923, DE2038
11h 30min
Return
14/10/25
1 Stopover (FRA)
DE2039, LH0924
10h 40min
Lufthansa, Condor
£750
London
Boston
Outbound
09/10/25
1 Stopover (ZRH)
LX0345, LX0052
18h 55min
Return
27/10/25
1 Stopover (ZRH)
LX0053, LX0332
10h 05min
Swiss International Air Lines
£350
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
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
09/10/25
1 Stopover (BCN)
VY6653, VY9795
29h 25min
Return
27/10/25
direct
BA1540
06h 35min
Vueling Airlines ?
£376
London
Boston
Outbound
11/10/25
1 Stopover (MUC)
LH2485, LH0424
15h 15min
Return
29/10/25
1 Stopover (MUC)
LH0425, LH2480
16h 55min
Lufthansa
£376
found 3 days ago
London
Boston
Outbound
20/10/25
1 Stopover (KEF)
FI0473, FI0633
11h 20min
Return
11/11/25
1 Stopover (KEF)
FI0630, FI0470
09h 55min
Icelandair
£391
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 329,97 £
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