AirHint found the following cheapest return flights from Denver (DEN) to Zagreb (ZAG) in May 2026 (see full year).
Return flights
| 16 May - 26 May | Air Canada | ||
| 14 May - 24 May | Turkish Airlines | ||
| 22 May - 31 May | British Airways | ||
| 22 May - 06 Jun | British Airways | ||
| 16 May - 31 May | United |
Also check the deals for one-way flights from Denver to Zagreb in May.
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