Cheapest return flights from St. Louis to Cancun in April from $255

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

Return flights

22 Apr - 29 Apr Frontier Airlines direct
25 Apr - 29 Apr Frontier Airlines
23 Apr - 30 Apr Frontier Airlines
25 Apr - 29 Apr Frontier Airlines direct
23 Apr - 30 Apr Frontier Airlines direct
25 Apr - 01 May Frontier Airlines
01 Apr - 07 Apr Aeromexico
17 Apr - 20 Apr Frontier Airlines
24 Apr - 26 Apr Frontier Airlines
03 Apr - 06 Apr Frontier Airlines
24 Apr - 26 Apr Frontier Airlines direct
25 Apr - 01 May Frontier Airlines direct

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

Powered by

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.

Book a cheap hotel in Cancun

Cheap car rent in Cancun

Feel free to contact us with any feedback or request another flight research.