Cheapest one-way flights from St. Louis to Cancun in April from $156

AirHint found the following cheapest one-way flights from St. Louis (STL) to Cancun (CUN) in April 2026 (see full year).

One-Way flights

09 Apr Frontier Airlines
10 Apr Frontier Airlines
15 Apr Aeromexico
13 Apr Frontier Airlines direct
09 Apr Frontier Airlines direct
10 Apr Frontier Airlines direct
06 Apr Frontier Airlines direct
01 Apr Frontier Airlines direct
11 Apr Frontier Airlines direct
02 Apr Frontier Airlines direct

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

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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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