AirHint found the following cheapest return flights from Boston (BOS) to Zagreb (ZAG) in June 2026 (see full year).
Return flights
| 22 Jun - 26 Jun | Lufthansa | ||
| 10 Jun - 24 Jun | Lufthansa | ||
| 13 Jun - 27 Jun | Air Canada | ||
| 18 Jun - 06 Jul | British Airways | ||
| 18 Jun - 05 Jul | Condor |
Also check the deals for one-way flights from Boston to Zagreb in June.
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