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

Return flights

22 Dec - 09 Jan	IndiGo
23 Dec - 13 Jan	IndiGo
23 Dec - 06 Jan	IndiGo
17 Dec - 31 Dec	IndiGo
22 Dec - 29 Dec	IndiGo
11 Dec - 14 Dec	IndiGo
05 Dec - 31 Dec	IndiGo
11 Dec - 17 Dec	IndiGo
20 Dec - 10 Jan	IndiGo
19 Dec - 06 Jan	IndiGo
19 Dec - 09 Jan	IndiGo
01 Dec - 31 Dec	IndiGo
18 Dec - 06 Jan	IndiGo
20 Dec - 09 Jan	IndiGo
03 Dec - 14 Dec	Thai VietJet Air
10 Dec - 15 Dec	Thai AirAsia
24 Dec - 04 Jan	IndiGo
29 Dec - 11 Jan	SalamAir
02 Dec - 13 Dec	Norse Atlantic Airways
12 Dec - 16 Dec	Thai AirAsia

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 344€

Return flights