Cheapest return flights from St. Louis to Cancun in December from 268€

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

Return flights

07 Dec - 12 Dec Delta
07 Dec - 11 Dec Delta
04 Dec - 11 Dec Spirit Airlines
05 Dec - 10 Dec Frontier Airlines direct
07 Dec - 11 Dec Southwest Airlines direct
10 Dec - 15 Dec United
04 Dec - 11 Dec Southwest Airlines direct
18 Dec - 23 Dec Southwest Airlines direct
27 Dec - 31 Dec Southwest Airlines
20 Dec - 27 Dec Frontier Airlines direct
24 Dec - 01 Jan Aeromexico
28 Dec - 03 Jan Delta

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

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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