AirHint found the following cheapest return flights from Madison (MSN) to San Juan (SJU) in October 2025 (see full year).
Return flights
| 25 Oct - 03 Nov | Delta | ||
| 29 Oct - 05 Nov | United | ||
| 30 Oct - 03 Nov | Delta |
Also check the deals for one-way flights from Madison to San Juan in October.
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