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

Return flights

12 Sep - 20 Sep	Oman Air
08 Sep - 13 Sep	Oman Air
10 Sep - 20 Sep	Oman Air
19 Sep - 27 Sep	Oman Air
16 Sep - 30 Sep	Oman Air
05 Sep - 13 Sep	Oman Air
08 Sep - 20 Sep	Oman Air
04 Sep - 13 Sep	Oman Air
16 Sep - 18 Oct	Etihad Airways
26 Sep - 30 Sep	Oman Air
12 Sep - 21 Sep	Oman Air
14 Sep - 04 Oct	Etihad Airways
19 Sep - 05 Oct	Kuwait Airways
25 Sep - 02 Oct	SWISS
10 Sep - 06 Oct	SWISS
16 Sep - 15 Oct	Qatar Airways
26 Sep - 06 Oct	Oman Air
18 Sep - 09 Oct	Austrian Airlines
16 Sep - 31 Oct	SriLankan Airlines
27 Sep - 10 Oct	SriLankan Airlines

Also check the deals for one-way flights from Bangkok to Frankfurt 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 Frankfurt in September from $679

Return flights