AirHint found the following cheapest return flights from St. Louis (STL) to Cancun (CUN) in November 2025 (see full year).
Return flights
| 10 Nov - 17 Nov | Volaris | direct | |
| 07 Nov - 14 Nov | Air Canada | ||
| 20 Nov - 23 Nov | Spirit Airlines | ||
| 20 Nov - 23 Nov | Frontier Airlines | direct | |
| 21 Nov - 27 Nov | Frontier Airlines | direct |
Also check the deals for one-way flights from St. Louis to Cancun in November.
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