AirHint found the following cheapest return flights from Belgrade (BEG) to Istanbul (IST) in January 2026 (see full year).

Return flights

28 Jan - 30 Jan	Wizz Air UK
15 Jan - 23 Jan	Air Serbia
18 Jan - 21 Jan	Wizz Air
15 Jan - 30 Jan	Air Serbia
20 Jan - 24 Jan	Wizz Air
15 Jan - 18 Jan	Air Serbia	direct
09 Jan - 12 Jan	Air Serbia	direct
17 Jan - 18 Jan	Air Serbia	direct
16 Jan - 21 Jan	Pegasus Airlines
22 Jan - 26 Jan	Air Serbia	direct
29 Jan - 02 Feb	Wizz Air
09 Jan - 06 Feb	Air Serbia
30 Jan - 06 Feb	AJet
29 Jan - 01 Feb	Air Serbia	direct
29 Jan - 02 Feb	Air Serbia	direct
30 Jan - 01 Feb	Air Serbia	direct
31 Jan - 07 Feb	LOT
31 Jan - 07 Feb	Air Serbia	direct
30 Jan - 03 Feb	Air Serbia	direct
30 Jan - 06 Feb	AJet	direct

Also check the deals for one-way flights from Belgrade to Istanbul in January.

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 Belgrade to Istanbul in January from 128€

Return flights