AirHint found the following cheapest return flights from Boston (BOS) to Cap Haitien (CAP) in May 2026 (see full year).
Return flights
| 25 May - 03 Jun | Frontier Airlines | ||
| 13 May - 31 May | Frontier Airlines | ||
| 14 May - 28 May | Frontier Airlines | ||
| 03 May - 10 May | Frontier Airlines |
Also check the deals for one-way flights from Boston to Cap Haitien in May.
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