Cheapest return flights from Belgrade to Istanbul in September from $197

Best time to book flights for Belgrade (BEG) to Istanbul (IST) flights at AirHint

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

Return flights

03 Sep - 10 Sep Air Serbia
24 Sep - 28 Sep AJet direct
26 Sep - 28 Sep AJet direct
10 Sep - 13 Sep Air Serbia direct
15 Sep - 19 Sep Air Serbia direct
23 Sep - 26 Sep Air Serbia direct
01 Sep - 17 Sep Air Serbia direct
04 Sep - 15 Sep Air Serbia direct
05 Sep - 07 Sep Air Serbia direct
05 Sep - 09 Sep Air Serbia direct
26 Sep - 02 Oct Air Serbia direct

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

Skyscanner

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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul