Cheapest return flights from St. Louis (STL) to Cancun (CUN), August

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
08 Aug 12 Aug Frontier Airlines
03 Aug 07 Aug Frontier Airlines
12 Aug 16 Aug Frontier Airlines
25 Aug 31 Aug Frontier Airlines
07 Aug 10 Aug Frontier Airlines
05 Aug 15 Aug Frontier Airlines
08 Aug 12 Aug Frontier Airlines
Direct Flight
28 Aug 28 Aug Southwest Airlines
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deals for one-way flights from St. Louis to Cancun in August.

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Updated Jul 4, 2026.

About these fares

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