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

Return flights

29 Dec - 07 Jan	Pegasus Airlines
24 Dec - 11 Jan	Pegasus Airlines
25 Dec - 30 Dec	AJet
23 Dec - 30 Dec	AJet
28 Dec - 10 Jan	Pegasus Airlines
28 Dec - 06 Jan	AJet
28 Dec - 31 Dec	Turkish Airlines	direct
24 Dec - 11 Jan	Turkish Airlines	direct
29 Dec - 11 Jan	Pegasus Airlines
30 Dec - 09 Jan	AJet
29 Dec - 30 Dec	AJet
27 Dec - 06 Jan	Pegasus Airlines
25 Dec - 29 Dec	Pegasus Airlines
27 Dec - 29 Dec	Pegasus Airlines
31 Dec - 07 Jan	Pegasus Airlines
30 Dec - 07 Jan	AJet
25 Dec - 31 Dec	AJet
29 Dec - 31 Dec	Pegasus Airlines
27 Dec - 30 Dec	Pegasus Airlines
23 Dec - 25 Dec	AJet

Also check the deals for one-way flights from Istanbul to Belgrade 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 Istanbul to Belgrade in December from $226

Return flights