AirHint found the following cheapest return flights from Chicago (ORD) to Zagreb (ZAG) in May 2026 (see full year).
Return flights
| 06 May - 13 May | Icelandair | ||
| 13 May - 27 May | KLM | ||
| 07 May - 13 May | Icelandair | ||
| 13 May - 10 Jun | LOT | ||
| 17 May - 31 May | Icelandair | ||
| 27 May - 15 Jun | Icelandair | ||
| 16 May - 30 May | Spirit Airlines |
Also check the deals for one-way flights from Chicago to Zagreb in May.
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