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Saint Louis → Cancun

Dec 21, 2026 · one way

STL → CUN1 adulteconomyOne way

9 flight options · 5 airlines

Nonstop flights

Mon, Dec 21 · One way

Frontier Airlines
6:05 amSTL
3h 14m
Nonstop
10:19 amCUN

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Southwest Airlines
1:15 pmSTL
3h 5m
Nonstop
5:20 pmCUN

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Southwest Airlines
9:20 amSTL
3h 5m
Nonstop
1:25 pmCUN

One-way total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 · One way

American Airlines
5:00 amSTL
6h 29m
CLT · 1h 25m
12:29 pmCUN

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

United Airlines
5:25 amSTL
7h 18m
ORD · 1h 42m
1:43 pmCUN

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Delta Air Lines
2:31 pmSTL
5h 37m
ATL · 1h 24m
9:08 pmCUN

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Southwest Airlines
8:00 amSTL
6h
MCI · 1h 35m
3:00 pmCUN

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Southwest Airlines
1:05 pmSTL
6h 20m
MDW · 1h 35m
8:25 pmCUN

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Southwest Airlines
11:45 amSTL
7h
HOU · 2h 45m
7:45 pmCUN

One-way total · 1 adult · Taxes included

Make this trip yours

STL ⇄ CUN

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-21 · one wayFrontier AirlinesF986$252.002026-10-29T01:28:25Z
2026-12-21 · one waySouthwest AirlinesWN1995$364.002026-10-29T01:28:25Z
2026-12-21 · one wayAmerican AirlinesAA1992 + AA895$371.002026-10-29T01:28:25Z
2026-12-21 · one wayUnited AirlinesUA4439 + UA2371$385.002026-10-29T01:28:25Z
2026-12-21 · one wayDelta Air LinesDL1102 + DL1939$392.002026-10-29T01:28:25Z
2026-12-21 · one waySouthwest AirlinesWN1985$364.002026-10-29T01:28:25Z
2026-12-21 · one waySouthwest AirlinesWN4164 + WN144$343.002026-10-29T01:28:25Z
2026-12-21 · one waySouthwest AirlinesWN1679 + WN218$343.002026-10-29T01:28:25Z
2026-12-21 · one waySouthwest AirlinesWN3155 + WN305$343.002026-10-29T01:28:25Z

2026-12-21 · one way · $252.00

  • Frontier Airlines F986: STL 2026-12-21 06:05:00 → CUN 2026-12-21 10:19:00; nonstop; 194 minutes. Local airport times.

2026-12-21 · one way · $364.00

  • Southwest Airlines WN1995: STL 2026-12-21 13:15:00 → CUN 2026-12-21 17:20:00; nonstop; 185 minutes. Local airport times.

2026-12-21 · one way · $371.00

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

2026-12-21 · one way · $385.00

  • United Airlines UA4439 / UA2371: STL 2026-12-21 05:25:00 → CUN 2026-12-21 13:43:00; 1 stop(s) via ORD; 438 minutes. Local airport times.
    • UA4439: STL 2026-12-21 05:25:00 → ORD 2026-12-21 06:58:00; layover at ORD: 102 minutes.
    • UA2371: ORD 2026-12-21 08:40:00 → CUN 2026-12-21 13:43:00.

2026-12-21 · one way · $392.00

  • Delta Air Lines DL1102 / DL1939: STL 2026-12-21 14:31:00 → CUN 2026-12-21 21:08:00; 1 stop(s) via ATL; 337 minutes. Local airport times.
    • DL1102: STL 2026-12-21 14:31:00 → ATL 2026-12-21 17:05:00; layover at ATL: 84 minutes.
    • DL1939: ATL 2026-12-21 18:29:00 → CUN 2026-12-21 21:08:00.

2026-12-21 · one way · $364.00

  • Southwest Airlines WN1985: STL 2026-12-21 09:20:00 → CUN 2026-12-21 13:25:00; nonstop; 185 minutes. Local airport times.

2026-12-21 · one way · $343.00

  • Southwest Airlines WN4164 / WN144: STL 2026-12-21 08:00:00 → CUN 2026-12-21 15:00:00; 1 stop(s) via MCI; 360 minutes. Local airport times.
    • WN4164: STL 2026-12-21 08:00:00 → MCI 2026-12-21 09:10:00; layover at MCI: 95 minutes.
    • WN144: MCI 2026-12-21 10:45:00 → CUN 2026-12-21 15:00:00.

2026-12-21 · one way · $343.00

  • Southwest Airlines WN1679 / WN218: STL 2026-12-21 13:05:00 → CUN 2026-12-21 20:25:00; 1 stop(s) via MDW; 380 minutes. Local airport times.
    • WN1679: STL 2026-12-21 13:05:00 → MDW 2026-12-21 14:10:00; layover at MDW: 95 minutes.
    • WN218: MDW 2026-12-21 15:45:00 → CUN 2026-12-21 20:25:00.

2026-12-21 · one way · $343.00

  • Southwest Airlines WN3155 / WN305: STL 2026-12-21 11:45:00 → CUN 2026-12-21 19:45:00; 1 stop(s) via HOU; 420 minutes. Local airport times.
    • WN3155: STL 2026-12-21 11:45:00 → HOU 2026-12-21 13:50:00; layover at HOU: 165 minutes.
    • WN305: HOU 2026-12-21 16:35:00 → CUN 2026-12-21 19:45:00.

More dates for this route