AirHint found the following cheapest return flights from Frankfurt (FRA) to Bangkok (BKK) in September 2026 (see full year).

Return flights

07 Sep - 17 Sep	KLM
07 Sep - 28 Sep	KLM
16 Sep - 20 Sep	Air France
08 Sep - 29 Sep	KLM
16 Sep - 23 Sep	Air France
14 Sep - 30 Sep	KLM
09 Sep - 24 Sep	KLM
07 Sep - 21 Sep	KLM
15 Sep - 01 Oct	KLM
09 Sep - 12 Oct	KLM
16 Sep - 07 Oct	Air France
09 Sep - 07 Oct	KLM
07 Sep - 24 Sep	KLM
05 Sep - 20 Sep	Air France
01 Sep - 05 Oct	Finnair
14 Sep - 06 Oct	Saudia
11 Sep - 10 Oct	Saudia
12 Sep - 02 Oct	Finnair
17 Sep - 01 Oct	SWISS
19 Sep - 03 Oct	Finnair

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Bangkok in September from 556€

Return flights