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

Return flights

05 Sep - 13 Sep	China Eastern
01 Sep - 06 Oct	Indonesia AirAsia
15 Sep - 28 Sep	Hainan Airlines
02 Sep - 15 Sep	Air China
01 Sep - 14 Sep	Air China
08 Sep - 21 Sep	Air China
09 Sep - 16 Sep	Air China
01 Sep - 07 Sep	Air China
22 Sep - 27 Sep	IndiGo
04 Sep - 17 Sep	Air China
18 Sep - 29 Sep	IndiGo
27 Sep - 15 Oct	Air India
27 Sep - 18 Oct	Air India
27 Sep - 04 Oct	Air India
27 Sep - 14 Oct	Etihad Airways
06 Sep - 25 Oct	Emirates
27 Sep - 18 Oct	Thai Airways	direct
29 Sep - 04 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 567€

Return flights