Cheapest return flights from Boston to London in October from $620

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

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

Return flights

07 Oct - 14 Oct SWISS
08 Oct - 15 Oct SWISS
09 Oct - 16 Oct SWISS
14 Oct - 21 Oct SWISS
15 Oct - 22 Oct SWISS
16 Oct - 23 Oct SWISS
21 Oct - 28 Oct SWISS
22 Oct - 29 Oct SWISS
13 Oct - 22 Oct SWISS
19 Oct - 29 Oct SWISS
29 Oct - 05 Nov SWISS
28 Oct - 04 Nov SWISS
30 Oct - 06 Nov SWISS
27 Oct - 03 Nov SWISS
25 Oct - 01 Nov SWISS
29 Oct - 01 Nov SWISS
31 Oct - 03 Nov KLM
31 Oct - 07 Nov KLM
30 Oct - 02 Nov SWISS
26 Oct - 02 Nov SWISS

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

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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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