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

Return flights

19 Aug - 26 Aug	British Airways
18 Aug - 29 Aug	Fly Play
30 Aug - 05 Sep	Air Canada
30 Aug - 20 Sep	Icelandair
20 Aug - 13 Sep	Icelandair
26 Aug - 02 Sep	SWISS
27 Aug - 03 Sep	Lufthansa
20 Aug - 27 Aug	SWISS
24 Aug - 13 Sep	Icelandair
17 Aug - 06 Sep	Icelandair
21 Aug - 28 Aug	Lufthansa
22 Aug - 29 Aug	Lufthansa
21 Aug - 13 Sep	Lufthansa
17 Aug - 24 Aug	SWISS
26 Aug - 28 Aug	SWISS
30 Aug - 06 Sep	Lufthansa
20 Aug - 13 Sep	Scandinavian Airlines	direct
18 Aug - 29 Aug	Scandinavian Airlines	direct
19 Aug - 26 Aug	Scandinavian Airlines	direct
16 Aug - 17 Aug	Scandinavian Airlines	direct

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

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.

Book a cheap hotel in Copenhagen

Cheap car rent in Copenhagen

Cheapest return flights from Boston to Copenhagen in August from 357€

Return flights