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

Return flights

09 Dec - 09 Jan	IndiGo
15 Dec - 08 Jan	IndiGo
02 Dec - 05 Dec	IndiGo
22 Dec - 06 Jan	IndiGo
04 Dec - 09 Dec	IndiGo
04 Dec - 10 Dec	IndiGo
21 Dec - 10 Jan	IndiGo
01 Dec - 05 Dec	Gulf Air
04 Dec - 11 Dec	IndiGo
29 Dec - 11 Jan	SalamAir
19 Dec - 30 Jan	Centrum Air
19 Dec - 14 Jan	Centrum Air
17 Dec - 31 Dec	Thai AirAsia
02 Dec - 06 Dec	Thai Lion Air
01 Dec - 31 Dec	Thai AirAsia
25 Dec - 10 Jan	Etihad Airways
03 Dec - 14 Dec	Nok Air
09 Dec - 17 Dec	Sichuan Airlines
30 Dec - 11 Jan	Sichuan Airlines
20 Dec - 11 Jan	Sichuan Airlines

Also check the deals for one-way flights from Bangkok to Istanbul in December.

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 December from $433

Return flights