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

Return flights

19 Sep - 28 Sep	Etihad Airways
22 Sep - 05 Oct	Air Arabia
16 Sep - 25 Sep	Etihad Airways
16 Sep - 22 Sep	Etihad Airways
19 Sep - 26 Sep	Etihad Airways
18 Sep - 24 Sep	Air Arabia
18 Sep - 22 Sep	Air Arabia
17 Sep - 19 Sep	Etihad Airways
28 Sep - 01 Oct	Air Arabia
21 Sep - 14 Oct	Etihad Airways
29 Sep - 01 Oct	SalamAir
25 Sep - 30 Sep	Etihad Airways
24 Sep - 15 Oct	Etihad Airways
17 Sep - 23 Sep	Etihad Airways
28 Sep - 30 Sep	Air Arabia
25 Sep - 02 Oct	Air Arabia
21 Sep - 11 Oct	Etihad Airways
20 Sep - 06 Oct	Etihad Airways
26 Sep - 04 Oct	SalamAir
22 Sep - 04 Oct	Air Arabia

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 402€

Return flights