Cheapest return flights from London to Boston in April from $456

Best time to book flights for London (LHR) to Boston (BOS) flights at AirHint

AirHint found the following cheapest return flights from London (LHR) to Boston (BOS) in April 2025 (see full year).

Return flights

22 Apr - 14 May Austrian Airlines
30 Apr - 06 May Austrian Airlines
29 Apr - 06 May Lufthansa
30 Apr - 05 May Austrian Airlines
30 Apr - 07 May Austrian Airlines
23 Apr - 30 Apr SWISS
22 Apr - 30 Apr Icelandair
28 Apr - 05 May Lufthansa
28 Apr - 07 May Lufthansa
20 Apr - 18 May SWISS
02 Apr - 08 Apr Vueling Airlines
28 Apr - 03 May Icelandair
29 Apr - 18 May Austrian Airlines
01 Apr - 07 Apr Lufthansa
01 Apr - 08 Apr Lufthansa
01 Apr - 09 Apr Lufthansa
23 Apr - 30 Apr British Airways direct
24 Apr - 29 Apr SWISS
22 Apr - 30 Apr British Airways direct
15 Apr - 29 Apr Lufthansa

Also check the deals for one-way flights from London to Boston in April.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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