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

Return flights

19 Sep - 05 Oct	Turkmenistan Airlines
06 Sep - 18 Sep	Pegasus Airlines
26 Sep - 03 Oct	Oman Air
08 Sep - 14 Sep	Oman Air
20 Sep - 25 Sep	Oman Air
20 Sep - 27 Sep	Oman Air
10 Sep - 17 Sep	Oman Air
08 Sep - 17 Sep	Oman Air
02 Sep - 17 Sep	Oman Air
29 Sep - 13 Oct	Oman Air
19 Sep - 29 Sep	Oman Air
02 Sep - 15 Sep	Oman Air
09 Sep - 14 Sep	Oman Air
29 Sep - 06 Oct	Oman Air
29 Sep - 08 Oct	Oman Air
10 Sep - 05 Oct	Oman Air
30 Sep - 09 Oct	Oman Air
01 Sep - 28 Oct	Oman Air
25 Sep - 04 Oct	Oman Air
27 Sep - 04 Oct	Pegasus Airlines

Also check the deals for one-way flights from Istanbul 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 Istanbul to Bangkok in September from 132€

Return flights