AirHint found the following cheapest one-way flights from St. Louis (STL) to Cancun (CUN) in November 2025 (see full year).

One-Way flights

16 Nov	Frontier Airlines	direct
10 Nov	Frontier Airlines	direct
17 Nov	Frontier Airlines	direct
02 Nov	Frontier Airlines	direct
19 Nov	Frontier Airlines	direct
04 Nov	Frontier Airlines	direct
13 Nov	Frontier Airlines	direct
28 Nov	Frontier Airlines	direct
14 Nov	Frontier Airlines	direct
07 Nov	Frontier Airlines	direct

Also check the deals for return flights from St. Louis to Cancun in November.

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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Cheapest one-way flights from St. Louis to Cancun in November from 97€

One-Way flights