AirHint found the following cheapest return flights from Rockford (RFD) to San Juan (SJU) in December 2025 (see full year).
Return flights
| 08 Dec - 14 Dec | Allegiant Air | ||
| 20 Dec - 27 Dec | Allegiant Air | ||
| 30 Dec - 04 Jan | Allegiant Air | ||
| 20 Dec - 28 Dec | Allegiant Air | ||
| 26 Dec - 08 Jan | Allegiant Air |
Also check the deals for one-way flights from Rockford to San Juan in December.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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