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

Return flights

11 Nov - 15 Nov	SWISS
21 Nov - 27 Nov	SWISS
05 Nov - 10 Nov	SWISS
25 Nov - 01 Dec	SWISS
26 Nov - 01 Dec	SWISS
20 Nov - 24 Nov	SWISS
26 Nov - 02 Dec	SWISS
26 Nov - 30 Nov	SWISS
26 Nov - 03 Dec	SWISS
13 Nov - 24 Nov	SWISS
14 Nov - 18 Nov	SWISS
25 Nov - 30 Nov	SWISS
24 Nov - 29 Nov	SWISS
12 Nov - 26 Nov	Delta
04 Nov - 15 Dec	Delta
27 Nov - 01 Dec	SWISS
21 Nov - 08 Dec	SWISS
20 Nov - 04 Dec	SWISS
22 Nov - 06 Dec	SWISS
28 Nov - 07 Dec	Virgin Atlantic

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

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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Cheapest return flights from London to Boston in November from $519

Return flights