AirHint found the following cheapest return flights from Chicago (ORD) to Belgrade (BEG) in May 2026 (see full year).

Return flights

06 May - 24 Jun	Turkish Airlines
19 May - 04 Jun	Icelandair
18 May - 04 Jun	Lufthansa
02 May - 09 May	Icelandair
18 May - 03 Jun	Spirit Airlines
19 May - 02 Jun	Spirit Airlines
16 May - 30 May	Spirit Airlines
20 May - 13 Jun	LOT
21 May - 13 Jun	LOT
25 May - 17 Jun	Spirit Airlines
25 May - 08 Jun	Spirit Airlines
23 May - 17 Jun	Spirit Airlines
02 May - 09 May	Air Serbia	direct
16 May - 30 May	Air Serbia	direct

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

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 Chicago to Belgrade in May from 568€

Return flights