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

Return flights

23 Sep - 26 Sep	Air Arabia
17 Sep - 23 Sep	Etihad Airways
29 Sep - 20 Oct	Thai VietJet Air
27 Sep - 02 Oct	Thai Lion Air
20 Sep - 18 Oct	Air India
29 Sep - 06 Oct	Thai VietJet Air
19 Sep - 26 Sep	Etihad Airways
16 Sep - 18 Sep	Air China
20 Sep - 27 Sep	Etihad Airways
21 Sep - 28 Sep	Etihad Airways
24 Sep - 03 Oct	Etihad Airways
28 Sep - 26 Oct	Air India
18 Sep - 28 Sep	Emirates
17 Sep - 28 Sep	Emirates
26 Sep - 03 Oct	Emirates
17 Sep - 23 Sep	Thai Airways	direct
17 Sep - 24 Sep	Thai Airways	direct
25 Sep - 02 Oct	Scandinavian Airlines

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

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 Bangkok to Copenhagen in September from 550€

Return flights