Cheapest return flights from Chicago to Belgrade in September from $593

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

Return flights

25 Sep - 30 Oct Spirit Airlines
27 Sep - 14 Oct Spirit Airlines
27 Sep - 28 Oct Spirit Airlines
28 Sep - 29 Oct TAP
26 Sep - 27 Oct TAP
08 Sep - 22 Oct Frontier Airlines
24 Sep - 25 Oct Spirit Airlines
20 Sep - 25 Oct Spirit Airlines
17 Sep - 24 Sep Turkish Airlines
10 Sep - 17 Sep Turkish Airlines
02 Sep - 09 Sep Icelandair
15 Sep - 24 Sep Turkish Airlines
16 Sep - 23 Sep Turkish Airlines
22 Sep - 02 Oct Turkish Airlines
10 Sep - 24 Oct Turkish Airlines
11 Sep - 19 Sep Frontier Airlines
03 Sep - 10 Sep Spirit Airlines
01 Sep - 20 Sep Aer Lingus
03 Sep - 06 Sep Spirit Airlines
03 Sep - 10 Sep Air Serbia direct

Also check the deals for one-way flights from Chicago to Belgrade 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.

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