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

Return flights

08 Dec - 12 Dec	Norse Atlantic Airways (UK)
13 Dec - 16 Dec	AirAsia
30 Dec - 04 Jan	Sichuan Airlines
30 Dec - 05 Jan	Sichuan Airlines
09 Dec - 13 Dec	AirAsia
05 Dec - 13 Dec	Thai AirAsia X
28 Dec - 01 Jan	Air Arabia
01 Dec - 07 Dec	Air Arabia
25 Dec - 05 Jan	Air Arabia
24 Dec - 02 Jan	Air Arabia
26 Dec - 05 Jan	Air Arabia
27 Dec - 05 Jan	Air Arabia
28 Dec - 05 Jan	Air Arabia
14 Dec - 13 Jan	Air Arabia
25 Dec - 30 Dec	Norse Atlantic Airways (UK)
26 Dec - 03 Jan	Air Arabia
05 Dec - 10 Dec	IndiGo
24 Dec - 31 Dec	Air Arabia
25 Dec - 31 Dec	Air Arabia
27 Dec - 31 Dec	Air Arabia

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 $511

Return flights