Cheapest return flights from London to Boston in June from $517

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

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

Return flights

05 Jun - 09 Jun SWISS
05 Jun - 10 Jun SWISS
04 Jun - 11 Jun SWISS
16 Jun - 29 Jun SWISS
05 Jun - 11 Jun SWISS
03 Jun - 10 Jun SWISS
05 Jun - 08 Jun SWISS
04 Jun - 09 Jun SWISS
19 Jun - 29 Jun SWISS
05 Jun - 12 Jun SWISS
11 Jun - 07 Jul SWISS
19 Jun - 14 Jul SWISS
03 Jun - 22 Jul SWISS
17 Jun - 14 Jul SWISS
23 Jun - 16 Jul SWISS
26 Jun - 07 Jul SWISS
25 Jun - 08 Jul SWISS
24 Jun - 08 Jul SWISS
25 Jun - 20 Jul Lufthansa
02 Jun - 07 Jul Lufthansa

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

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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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