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

Return flights

15 Sep - 28 Oct	Pegasus Airlines
02 Sep - 30 Oct	AJet
03 Sep - 30 Oct	AJet
18 Sep - 31 Oct	Pegasus Airlines
09 Sep - 16 Sep	Air China
10 Sep - 17 Sep	Air China
16 Sep - 23 Sep	Air China
02 Sep - 09 Sep	Air China
06 Sep - 13 Sep	Air China
29 Sep - 27 Oct	Pegasus Airlines
29 Sep - 06 Oct	Scandinavian Airlines
08 Sep - 15 Sep	Norwegian Air Sweden AOC
03 Sep - 31 Oct	AJet
01 Sep - 08 Sep	Air China
04 Sep - 11 Sep	Air China
11 Sep - 18 Sep	Air China
12 Sep - 19 Sep	Air China
22 Sep - 22 Oct	Air China
09 Sep - 21 Oct	Air China
24 Sep - 01 Oct	AJet

Also check the deals for one-way flights from Copenhagen to Bangkok 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 Copenhagen to Bangkok in September from $523

Return flights