AirHint found the following cheapest return flights from Atlanta (ATL) to Zagreb (ZAG) in December 2025 (see full year).
Return flights
| 29 Dec - 13 Jan | Lufthansa | ||
| 08 Dec - 24 Dec | KLM | ||
| 17 Dec - 21 Dec | Spirit Airlines | ||
| 11 Dec - 03 Jan | Spirit Airlines | ||
| 28 Dec - 03 Jan | Spirit Airlines |
Also check the deals for one-way flights from Atlanta to Zagreb in December.
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