Cheapest return flights from St. Louis to Cancun in August from $269

AirHint found the following cheapest return flights from St. Louis (STL) to Cancun (CUN) in August 2025 (see full year).

Return flights

31 Aug - 04 Sep Volaris direct
03 Aug - 09 Aug Spirit Airlines
14 Aug - 17 Aug Spirit Airlines
07 Aug - 10 Aug Spirit Airlines
14 Aug - 17 Aug Frontier Airlines direct
28 Aug - 01 Sep Frontier Airlines direct

Also check the deals for one-way flights from St. Louis to Cancun in August.

Skyscanner

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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