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

Return flights

21 Sep - 28 Sep	Thai Lion Air
30 Sep - 13 Oct	Thai Lion Air
14 Sep - 12 Oct	Thai Lion Air
28 Sep - 05 Oct	Thai Lion Air
21 Sep - 26 Sep	Thai Lion Air
15 Sep - 21 Sep	Thai Lion Air
11 Sep - 28 Sep	Thai AirAsia
30 Sep - 21 Oct	Thai Lion Air
28 Sep - 10 Oct	Thai Lion Air
15 Sep - 25 Sep	Thai Lion Air
11 Sep - 19 Sep	Thai Lion Air
27 Sep - 18 Oct	Thai AirAsia
14 Sep - 14 Oct	Thai Lion Air
16 Sep - 25 Sep	Thai Lion Air
22 Sep - 25 Sep	Thai Lion Air
02 Sep - 16 Sep	Thai AirAsia
15 Sep - 19 Sep	Thai Lion Air
17 Sep - 02 Oct	Thai AirAsia
22 Sep - 04 Oct	Thai Lion Air

Also check the deals for one-way flights from Bangkok to Istanbul 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 Istanbul in September from 378€

Return flights