AirHint found the following cheapest return flights from Boston (BOS) to Zagreb (ZAG) in April 2026 (see full year).
Return flights
| 14 Apr - 28 Apr | Austrian Airlines | ||
| 09 Apr - 23 Apr | Austrian Airlines | ||
| 22 Apr - 02 May | Lufthansa | ||
| 12 Apr - 26 Apr | Lufthansa |
Also check the deals for one-way flights from Boston to Zagreb in April.
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