Cheapest return flights from Boston to Copenhagen in September from $361

Best time to book flights for Boston (BOS) to Copenhagen (CPH) flights at AirHint

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

Return flights

05 Sep - 15 Sep Fly Play
10 Sep - 22 Sep Fly Play
05 Sep - 18 Sep Fly Play
04 Sep - 17 Sep Fly Play
18 Sep - 22 Sep Fly Play
17 Sep - 22 Sep Fly Play
17 Sep - 21 Sep Fly Play
18 Sep - 23 Sep Fly Play
25 Sep - 30 Sep Fly Play
05 Sep - 15 Sep Scandinavian Airlines direct
28 Sep - 05 Oct Icelandair
28 Sep - 05 Oct Scandinavian Airlines direct

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

Skyscanner

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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