Travel with Axel,
get the best price.

Saint Louis → Cancun

Nov 21, 2026 · return Dec 1, 2026

STL → CUN1 adulteconomyRound trip

9 flight options · 4 airlines

Nonstop flights

Sat, Nov 21 – Tue, Dec 1

Frontier Airlines
6:00 amSTL
3h 14m
Nonstop
10:14 amCUN
Frontier Airlines
2:05 pmCUN
3h 20m
Nonstop
4:25 pmSTL

Round-trip total · 1 adult · Taxes included

Sat, Nov 21 – Tue, Dec 1

Southwest Airlines
10:20 amSTL
3h 5m
Nonstop
2:25 pmCUN
Southwest Airlines
2:25 pmCUN
3h 15m
Nonstop
4:40 pmSTL

Round-trip total · 1 adult · Taxes included

Sat, Nov 21 – Tue, Dec 1

Southwest Airlines
1:15 pmSTL
3h 5m
Nonstop
5:20 pmCUN
Southwest Airlines
12:00 pmCUN
3h 10m
Nonstop
2:10 pmSTL

Round-trip total · 1 adult · Taxes included

One-stop flights

Sat, Nov 21 – Tue, Dec 1

American Airlines
5:00 amSTL
6h 29m
CLT · 1h 25m
12:29 pmCUN
American Airlines
12:49 pmCUN
3h 32m
Nonstop
3:21 pmSTL

Round-trip total · 1 adult · Taxes included

Sat, Nov 21 – Tue, Dec 1

Delta Air Lines
2:31 pmSTL
5h 37m
ATL · 1h 24m
9:08 pmCUN
Delta Air Lines
5:35 pmCUN
6h 51m
ATL · 2h 15m
11:26 pmSTL

Round-trip total · 1 adult · Taxes included

Sat, Nov 21 – Tue, Dec 1

Frontier Airlines
6:00 amSTL
3h 28m
Nonstop
10:28 amCUN
Frontier Airlines
11:28 amCUN
7h 14m
ATL · 2h 31m
5:42 pmSTL

Round-trip total · 1 adult · Taxes included

Sat, Nov 21 – Tue, Dec 1

Southwest Airlines
1:05 pmSTL
6h 20m
MDW · 1h 35m
8:25 pmCUN
Southwest Airlines
2:25 pmCUN
3h 15m
Nonstop
4:40 pmSTL

Round-trip total · 1 adult · Taxes included

Sat, Nov 21 – Tue, Dec 1

Southwest Airlines
8:00 amSTL
6h
MCI · 1h 35m
3:00 pmCUN
Southwest Airlines
2:25 pmCUN
3h 15m
Nonstop
4:40 pmSTL

Round-trip total · 1 adult · Taxes included

Sat, Nov 21 – Tue, Dec 1

Southwest Airlines
12:20 pmSTL
3h 5m
Nonstop
4:25 pmCUN
Southwest Airlines
2:45 pmCUN
7h
BNA · 2h 55m
8:45 pmSTL

Round-trip 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.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Frontier Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

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)
2026-11-21 → 2026-12-01Frontier AirlinesF986 / F987$347.752026-10-29T01:28:25Z
2026-11-21 → 2026-12-01Southwest AirlinesWN1995 / WN1996$508.252026-10-29T01:28:25Z
2026-11-21 → 2026-12-01American AirlinesAA1992 + AA895 / AA3310$528.602026-10-29T01:28:25Z
2026-11-21 → 2026-12-01Delta Air LinesDL1102 + DL1939 / DL595 + DL1403$540.352026-10-29T01:28:25Z
2026-11-21 → 2026-12-01Southwest AirlinesWN1995 / WN1986$508.252026-10-29T01:28:25Z
2026-11-21 → 2026-12-01Frontier AirlinesF986 / F9152 + F94473$335.252026-10-29T01:28:25Z
2026-11-21 → 2026-12-01Southwest AirlinesWN1679 + WN218 / WN1996$494.002026-10-29T01:28:25Z
2026-11-21 → 2026-12-01Southwest AirlinesWN4164 + WN144 / WN1996$494.002026-10-29T01:28:25Z
2026-11-21 → 2026-12-01Southwest AirlinesWN1995 / WN390 + WN742$495.752026-10-29T01:28:25Z

2026-11-21 → 2026-12-01 · $347.75

  • Frontier Airlines F986: STL 2026-11-21 06:00:00 → CUN 2026-11-21 10:14:00; nonstop; 194 minutes. Local airport times.
  • Frontier Airlines F987: CUN 2026-12-01 14:05:00 → STL 2026-12-01 16:25:00; nonstop; 200 minutes. Local airport times.

2026-11-21 → 2026-12-01 · $508.25

  • Southwest Airlines WN1995: STL 2026-11-21 10:20:00 → CUN 2026-11-21 14:25:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN1996: CUN 2026-12-01 14:25:00 → STL 2026-12-01 16:40:00; nonstop; 195 minutes. Local airport times.

2026-11-21 → 2026-12-01 · $528.60

  • American Airlines AA1992 / AA895: STL 2026-11-21 05:00:00 → CUN 2026-11-21 12:29:00; 1 stop(s) via CLT; 389 minutes. Local airport times.
    • AA1992: STL 2026-11-21 05:00:00 → CLT 2026-11-21 07:55:00; layover at CLT: 85 minutes.
    • AA895: CLT 2026-11-21 09:20:00 → CUN 2026-11-21 12:29:00.
  • American Airlines AA3310: CUN 2026-12-01 12:49:00 → STL 2026-12-01 15:21:00; nonstop; 212 minutes. Local airport times.

2026-11-21 → 2026-12-01 · $540.35

  • Delta Air Lines DL1102 / DL1939: STL 2026-11-21 14:31:00 → CUN 2026-11-21 21:08:00; 1 stop(s) via ATL; 337 minutes. Local airport times.
    • DL1102: STL 2026-11-21 14:31:00 → ATL 2026-11-21 17:05:00; layover at ATL: 84 minutes.
    • DL1939: ATL 2026-11-21 18:29:00 → CUN 2026-11-21 21:08:00.
  • Delta Air Lines DL595 / DL1403: CUN 2026-12-01 17:35:00 → STL 2026-12-01 23:26:00; 1 stop(s) via ATL; 411 minutes. Local airport times.
    • DL595: CUN 2026-12-01 17:35:00 → ATL 2026-12-01 20:25:00; layover at ATL: 135 minutes.
    • DL1403: ATL 2026-12-01 22:40:00 → STL 2026-12-01 23:26:00.

2026-11-21 → 2026-12-01 · $508.25

  • Southwest Airlines WN1995: STL 2026-11-21 13:15:00 → CUN 2026-11-21 17:20:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN1986: CUN 2026-12-01 12:00:00 → STL 2026-12-01 14:10:00; nonstop; 190 minutes. Local airport times.

2026-11-21 → 2026-12-01 · $335.25

  • Frontier Airlines F986: STL 2026-11-21 06:00:00 → CUN 2026-11-21 10:28:00; nonstop; 208 minutes. Local airport times.
  • Frontier Airlines F9152 / F94473: CUN 2026-12-01 11:28:00 → STL 2026-12-01 17:42:00; 1 stop(s) via ATL; 434 minutes. Local airport times.
    • F9152: CUN 2026-12-01 11:28:00 → ATL 2026-12-01 14:18:00; layover at ATL: 151 minutes.
    • F94473: ATL 2026-12-01 16:49:00 → STL 2026-12-01 17:42:00.

2026-11-21 → 2026-12-01 · $494.00

  • Southwest Airlines WN1679 / WN218: STL 2026-11-21 13:05:00 → CUN 2026-11-21 20:25:00; 1 stop(s) via MDW; 380 minutes. Local airport times.
    • WN1679: STL 2026-11-21 13:05:00 → MDW 2026-11-21 14:10:00; layover at MDW: 95 minutes.
    • WN218: MDW 2026-11-21 15:45:00 → CUN 2026-11-21 20:25:00.
  • Southwest Airlines WN1996: CUN 2026-12-01 14:25:00 → STL 2026-12-01 16:40:00; nonstop; 195 minutes. Local airport times.

2026-11-21 → 2026-12-01 · $494.00

  • Southwest Airlines WN4164 / WN144: STL 2026-11-21 08:00:00 → CUN 2026-11-21 15:00:00; 1 stop(s) via MCI; 360 minutes. Local airport times.
    • WN4164: STL 2026-11-21 08:00:00 → MCI 2026-11-21 09:10:00; layover at MCI: 95 minutes.
    • WN144: MCI 2026-11-21 10:45:00 → CUN 2026-11-21 15:00:00.
  • Southwest Airlines WN1996: CUN 2026-12-01 14:25:00 → STL 2026-12-01 16:40:00; nonstop; 195 minutes. Local airport times.

2026-11-21 → 2026-12-01 · $495.75

  • Southwest Airlines WN1995: STL 2026-11-21 12:20:00 → CUN 2026-11-21 16:25:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN390 / WN742: CUN 2026-12-01 14:45:00 → STL 2026-12-01 20:45:00; 1 stop(s) via BNA; 420 minutes. Local airport times.
    • WN390: CUN 2026-12-01 14:45:00 → BNA 2026-12-01 16:35:00; layover at BNA: 175 minutes.
    • WN742: BNA 2026-12-01 19:30:00 → STL 2026-12-01 20:45:00.

More dates for this route