Earn point on your loyalty program!arrow arc left

Cheap flights from London (LCY) to Boston (BOS)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from London (LCY) to Boston (BOS)

How to find the cheapest flight from London (LCY) to Boston (BOS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from London (LCY) to Boston (BOS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from London (LCY) to Boston (BOS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from London to Boston in September , October 2026

30 Sep - 06 Oct $ 1,032.00
LCY
London
Swiss International Air Lines
1 STOPS
BOS
Boston
BOS
Boston
Swiss International Air Lines
1 STOPS
LCY
London
Pick dates
28 Sep - 13 Oct $ 1,221.00
LCY
London
Swiss International Air Lines
1 STOPS
BOS
Boston
BOS
Boston
Swiss International Air Lines
1 STOPS
LCY
London
Pick dates
29 Sep - 03 Oct $ 2,495.00
LCY
London
KLM Royal Dutch Airlines
1 STOPS
BOS
Boston
BOS
Boston
KLM Royal Dutch Airlines
1 STOPS
LCY
London
Pick dates

Last minute flights from London to Boston

29 Sep - 01 Oct $ 1,390.00
LCY
London
Lufthansa
2 STOPS
BOS
Boston
BOS
Boston
Lufthansa
1 STOPS
LCY
London
Pick dates
29 Sep - 01 Oct $ 1,938.00
LCY
London
Aer Lingus
1 STOPS
BOS
Boston
BOS
Boston
Aer Lingus
1 STOPS
LCY
London
Pick dates
29 Sep - 01 Oct $ 2,622.00
LCY
London
KLM Royal Dutch Airlines
1 STOPS
BOS
Boston
BOS
Boston
KLM Royal Dutch Airlines
1 STOPS
LCY
London
Pick dates

One-way flights to Boston from London

5:10 PM - 10:40 AM
JetBlue Airways
2 Stops
24h 41m
LCY - BOS
$ 860
Kiwi
Pick dates
8:25 AM - 11:25 AM
KLM Royal Dutch Airlines
1 Stops
9h 54m
LCY - BOS
$ 1,536
Kiwi
Pick dates
10:00 AM - 2:40 PM
KLM Royal Dutch Airlines
1 Stops
11h 35m
LCY - BOS
$ 1,536
Kiwi
Pick dates

How to find the cheapest flight from London (LCY) to Boston (BOS)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from London (LCY) to Boston (BOS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from London (LCY) to Boston (BOS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.