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

Return flights

28 Oct - 04 Nov	Iberia
22 Oct - 02 Nov	Scandinavian Airlines
27 Oct - 03 Nov	Scandinavian Airlines
08 Oct - 01 Nov	Lufthansa
29 Oct - 05 Nov	SWISS
01 Oct - 25 Oct	Icelandair
07 Oct - 14 Oct	Icelandair
13 Oct - 20 Oct	Icelandair
13 Oct - 08 Nov	Scandinavian Airlines	direct
23 Oct - 03 Nov	SWISS
12 Oct - 01 Nov	SWISS
23 Oct - 04 Nov	Lufthansa
15 Oct - 08 Nov	Scandinavian Airlines
13 Oct - 17 Oct	Lufthansa
17 Oct - 24 Oct	Icelandair
23 Oct - 30 Oct	Icelandair
10 Oct - 13 Oct	Lufthansa
11 Oct - 18 Oct	Icelandair
16 Oct - 22 Oct	Delta
10 Oct - 19 Oct	Air Canada

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

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 Boston to Copenhagen in October from 341€

Return flights