AirHint found the following cheapest return flights from Jacksonville (JAX) to Dublin (DUB) in January 2026 (see full year).
Return flights
| 17 Jan - 24 Jan | Lufthansa | ||
| 09 Jan - 11 Jan | United | ||
| 01 Jan - 06 Jan | Delta | ||
| 14 Jan - 17 Jan | TAP |
Also check the deals for one-way flights from Jacksonville to Dublin in January.
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