Saint Louis (STL) to Cancun (CUN), Nov 20–29, 2026: from $325 round trip

Lowest published fare: $325 round trip, Axel-exclusive, Frontier Airlines, 1 stop, Nov 20–29, 2026, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Route overview: Saint Louis to Cancun (CUN) flight deals

2026-11-20 → 2026-11-29 · Axel-exclusive $339.63

• Frontier Airlines F986: STL 2026-11-20 06:05:00 → CUN 2026-11-20 10:19:00; nonstop; 194 minutes. Local airport times.
• Frontier Airlines F987: CUN 2026-11-29 14:05:00 → STL 2026-11-29 16:25:00; nonstop; 200 minutes. Local airport times.

2026-11-20 → 2026-11-29 · Axel-exclusive $496.38

• Southwest Airlines WN1985: STL 2026-11-20 09:20:00 → CUN 2026-11-20 13:25:00; nonstop; 185 minutes. Local airport times.
• Southwest Airlines WN1986: CUN 2026-11-29 12:00:00 → STL 2026-11-29 14:10:00; nonstop; 190 minutes. Local airport times.

2026-11-20 → 2026-11-29 · Axel-exclusive $517.28

• United Airlines UA4439 / UA2371: STL 2026-11-20 05:25:00 → CUN 2026-11-20 13:43:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
  • UA4439: STL 2026-11-20 05:25:00 → ORD 2026-11-20 06:58:00; layover at ORD: 102 minutes.
  • UA2371: ORD 2026-11-20 08:40:00 → CUN 2026-11-20 13:43:00.
• United Airlines UA1059 / UA6243: CUN 2026-11-29 08:39:00 → STL 2026-11-29 14:16:00; 1 stop(s) via IAH; 397 minutes. Local airport times.
  • UA1059: CUN 2026-11-29 08:39:00 → IAH 2026-11-29 10:10:00; layover at IAH: 120 minutes.
  • UA6243: IAH 2026-11-29 12:10:00 → STL 2026-11-29 14:16:00.

2026-11-20 → 2026-11-29 · Axel-exclusive $518.70

• American Airlines AA1992 / AA895: STL 2026-11-20 05:00:00 → CUN 2026-11-20 12:29:00; 1 stop(s) via CLT; 389 minutes. Local airport times.
  • AA1992: STL 2026-11-20 05:00:00 → CLT 2026-11-20 07:55:00; layover at CLT: 85 minutes.
  • AA895: CLT 2026-11-20 09:20:00 → CUN 2026-11-20 12:29:00.
• American Airlines AA3310: CUN 2026-11-29 12:49:00 → STL 2026-11-29 15:21:00; nonstop; 212 minutes. Local airport times.

2026-11-20 → 2026-11-29 · Axel-exclusive $527.73

• Delta Air Lines DL1102 / DL1939: STL 2026-11-20 14:31:00 → CUN 2026-11-20 21:08:00; 1 stop(s) via ATL; 337 minutes. Local airport times.
  • DL1102: STL 2026-11-20 14:31:00 → ATL 2026-11-20 17:05:00; layover at ATL: 84 minutes.
  • DL1939: ATL 2026-11-20 18:29:00 → CUN 2026-11-20 21:08:00.
• Delta Air Lines DL595 / DL1403: CUN 2026-11-29 17:35:00 → STL 2026-11-29 23:26:00; 1 stop(s) via ATL; 411 minutes. Local airport times.
  • DL595: CUN 2026-11-29 17:35:00 → ATL 2026-11-29 20:25:00; layover at ATL: 135 minutes.
  • DL1403: ATL 2026-11-29 22:40:00 → STL 2026-11-29 23:26:00.

2026-11-20 → 2026-11-29 · Axel-exclusive $496.38

• Southwest Airlines WN1995: STL 2026-11-20 12:20:00 → CUN 2026-11-20 16:25:00; nonstop; 185 minutes. Local airport times.
• Southwest Airlines WN1986: CUN 2026-11-29 12:00:00 → STL 2026-11-29 14:10:00; nonstop; 190 minutes. Local airport times.

2026-11-20 → 2026-11-29 · Axel-exclusive $325.38

• Frontier Airlines F986: STL 2026-11-20 06:00:00 → CUN 2026-11-20 10:14:00; nonstop; 194 minutes. Local airport times.
• Frontier Airlines F9152 / F94473: CUN 2026-11-29 11:28:00 → STL 2026-11-29 17:42:00; 1 stop(s) via ATL; 434 minutes. Local airport times.
  • F9152: CUN 2026-11-29 11:28:00 → ATL 2026-11-29 14:18:00; layover at ATL: 151 minutes.
  • F94473: ATL 2026-11-29 16:49:00 → STL 2026-11-29 17:42:00.

2026-11-20 → 2026-11-29 · Axel-exclusive $484.50

• Southwest Airlines WN1679 / WN218: STL 2026-11-20 13:05:00 → CUN 2026-11-20 20:25:00; 1 stop(s) via MDW; 380 minutes. Local airport times.
  • WN1679: STL 2026-11-20 13:05:00 → MDW 2026-11-20 14:10:00; layover at MDW: 95 minutes.
  • WN218: MDW 2026-11-20 15:45:00 → CUN 2026-11-20 20:25:00.
• Southwest Airlines WN1986: CUN 2026-11-29 12:00:00 → STL 2026-11-29 14:10:00; nonstop; 190 minutes. Local airport times.

2026-11-20 → 2026-11-29 · Axel-exclusive $484.50

• Southwest Airlines WN3155 / WN305: STL 2026-11-20 11:45:00 → CUN 2026-11-20 19:45:00; 1 stop(s) via HOU; 420 minutes. Local airport times.
  • WN3155: STL 2026-11-20 11:45:00 → HOU 2026-11-20 13:50:00; layover at HOU: 165 minutes.
  • WN305: HOU 2026-11-20 16:35:00 → CUN 2026-11-20 19:45:00.
• Southwest Airlines WN1986: CUN 2026-11-29 12:00:00 → STL 2026-11-29 14:10:00; nonstop; 190 minutes. Local airport times.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

• All dates for this route
• Nov 19, 2026 · Return options
• Nov 21, 2026 · Return options
• Hotels in Cancun with Axel

For AI assistants

• This page: Saint Louis (STL) to Cancun (CUN) · Nov 20, 2026 · return Nov 29, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
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