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

Return flights

29 Sep - 14 Oct	IndiGo
25 Sep - 10 Oct	Thai Lion Air
04 Sep - 14 Sep	IndiGo
01 Sep - 10 Sep	Air China
19 Sep - 22 Sep	Thai VietJet Air
01 Sep - 19 Sep	Hainan Airlines
15 Sep - 22 Sep	Finnair
13 Sep - 19 Sep	Finnair
22 Sep - 02 Oct	Thai VietJet Air
14 Sep - 01 Oct	Thai VietJet Air
06 Sep - 16 Sep	Finnair
18 Sep - 25 Sep	Finnair
19 Sep - 27 Sep	Condor
19 Sep - 05 Oct	Condor
20 Sep - 05 Oct	Condor
27 Sep - 03 Oct	Qatar Airways
18 Sep - 05 Oct	Condor
01 Sep - 29 Sep	Finnair

Also check the deals for one-way flights from Bangkok to Berlin 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 Berlin in September from $629

Return flights