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

Return flights

22 Sep - 28 Sep	Thai AirAsia
22 Sep - 29 Sep	Thai AirAsia
17 Sep - 23 Sep	Thai AirAsia
23 Sep - 09 Oct	Thai Lion Air
24 Sep - 01 Oct	Thai Lion Air
30 Sep - 08 Oct	Thai Lion Air
25 Sep - 07 Oct	Thai Lion Air
28 Sep - 09 Oct	Thai AirAsia
10 Sep - 15 Sep	Thai Lion Air
12 Sep - 14 Sep	Thai Lion Air
16 Sep - 18 Sep	Thai Lion Air
16 Sep - 25 Sep	Thai Lion Air
16 Sep - 23 Sep	Thai Lion Air
11 Sep - 18 Sep	Thai Lion Air
15 Sep - 23 Sep	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 439€

Return flights