AirHint found the following cheapest return flights from Indianapolis (IND) to San Juan (SJU) in October 2025 (see full year).
Return flights
| 28 Oct - 31 Oct | Delta | ||
| 27 Oct - 29 Oct | Frontier Airlines | ||
| 28 Oct - 09 Nov | Spirit Airlines | ||
| 27 Oct - 09 Nov | Spirit Airlines | ||
| 28 Oct - 29 Oct | Spirit Airlines | ||
| 27 Oct - 31 Oct | Spirit Airlines |
Also check the deals for one-way flights from Indianapolis to San Juan in October.
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