AirHint found the following cheapest return flights from Frankfurt (FRA) to San Juan (SJU) in December 2026 (see full year).
Return flights
| 23 Dec - 03 Jan | easyJet | ||
| 27 Dec - 10 Jan | Air France | ||
| 27 Dec - 02 Jan | Ryanair | ||
| 23 Dec - 09 Jan | KLM | ||
| 23 Dec - 06 Jan | KLM | ||
| 20 Dec - 02 Jan | Iberia |
Also check the deals for one-way flights from Frankfurt to San Juan in December.
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