Flights from St. Louis, MO to Cancun, MX

Promo Code

Best Deals on Flights From St. Louis, MO (STL) to Cancun, MX (CUN)

Jun 2026
from$210*
Last seen: 20 hours ago
One-way/Economy
Jul 2026
from$190*
Last seen: 1 hour ago
One-way/Economy
Aug 2026
from$190*
Last seen: 23 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $210
cmp-daily-histogram-bars-legend-max-price-aria-label $332
Displaying fares for June-2026
  • 01

    Mon

    JUN

  • 02

    Tue

  • 03

    Wed

  • 04

    Thu

  • 05

    Fri

  • 06

    Sat

  • 07

    Sun

  • 08

    Mon

  • 09

    Tue

  • 10

    Wed

  • 11

    Thu

  • 12

    Fri

  • 13

    Sat

  • 14

    Sun

  • 15

    Mon

  • 16

    Tue

  • 17

    Wed

  • 18

    Thu

  • 19

    Fri

  • 20

    Sat

  • 21

    Sun

  • 22

    Mon

  • 23

    Tue

  • 24

    Wed

  • 25

    Thu

  • 26

    Fri

  • 27

    Sat

  • 28

    Sun

  • 29

    Mon

  • 30

    Tue

    • Range$210-$332

    *Prices found by others in the previous 48 hours for round-trip flights. Prices shown may also require membership in our travel club, Discount Den.

    Flights Deals from St. Louis, MO to Cancun, MX on Frontier

    $
    Flights Deals from St. Louis, MO to Cancun, MX on Frontier
    From
    To
    St. Louis, MO (STL)Cancun, MX (CUN)One-way
    /
    Discount Den Basic Fare    		Departing Oct 26, 2026

    From

    $206

    Last seen: 20 hours ago

    *Prices found by others in the previous 48 hours for one-way flights. Prices shown may also require membership in our travel club, Discount Den®.

    St. Louis, MO Cancun, MX

    Barclays Badge

    Earn 50,000 Miles after qualifying activity. Plus $0 Intro Annual Fee, then $99.
    Terms Apply.