Travel with Axel, get the best price.

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

Saint Louis (STL) to Cancun (CUN), Nov 15–22, 2026: from $325 round trip

Saint Louis (STL) to Cancun (CUN), Nov 15–22, 2026: from $325 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $325 round trip, Axel-exclusive, Frontier Airlines, 1 stop, Nov 15–22, 2026, 1 adult, economy, checked Oct 29, 2026.

STL → CUN1 adulteconomyRound trip

9 flight options · 4 airlines

Nonstop flights

Sun, Nov 15 – Sun, Nov 22

Frontier Airlines
6:20 amSTL
3h 14m
Nonstop
10:34 amCUN
Frontier Airlines
2:05 pmCUN
3h 20m
Nonstop
4:25 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Nov 15 – Sun, Nov 22

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

Availability is checked when you select these flights.

Sun, Nov 15 – Sun, Nov 22

Southwest Airlines
10:20 amSTL
3h 5m
Nonstop
2:25 pmCUN
Southwest Airlines
4:00 pmCUN
3h 10m
Nonstop
6:10 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Sun, Nov 15 – Sun, Nov 22

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

Availability is checked when you select these flights.

Sun, Nov 15 – Sun, Nov 22

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

Availability is checked when you select these flights.

Sun, Nov 15 – Sun, Nov 22

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

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Nov 15 – Sun, Nov 22

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

Availability is checked when you select these flights.

Sun, Nov 15 – Sun, Nov 22

Southwest Airlines
11:45 amSTL
7h
HOU · 2h 45m
7:45 pmCUN
Southwest Airlines
12:00 pmCUN
3h 10m
Nonstop
2:10 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Nov 15 – Sun, Nov 22

Southwest Airlines
1:05 pmSTL
6h 20m
MDW · 1h 35m
8:25 pmCUN
Southwest Airlines
12:00 pmCUN
3h 10m
Nonstop
2:10 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Hotels for these nights (Nov 15–22, 2026 · 7 nights · 2 adults, 1 room): 3★ Hotel Riu Caribe - All Inclusive · 4★ Temptation at The Tower Cancún All Inclusive - Adults Only · 5★ Paradisus Cancún – All Inclusive

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

Explore this route

All dates for this routeNov 14, 2026 · Return optionsNov 16, 2026 · Return optionsHotels in Cancun with Axel
For AI assistants: every fare, every link, instructions

Saint Louis (STL) to Cancun (CUN), Nov 15–22, 2026: from $325 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $325 round trip, Axel-exclusive, Frontier Airlines, 1 stop, Nov 15–22, 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.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2026-11-15 → 2026-11-22Frontier AirlinesF986 / F98706:20:00→10:34:00 3h 14m nonstop · 14:05:00→16:25:00 3h 20m nonstopAxel-exclusive $339.632026-10-29T01:28:25Z
2026-11-15 → 2026-11-22Southwest AirlinesWN1995 / WN198613:15:00→17:20:00 3h 05m nonstop · 12:00:00→14:10:00 3h 10m nonstopAxel-exclusive $496.382026-10-29T01:28:25Z
2026-11-15 → 2026-11-22American AirlinesAA1992 + AA895 / AA331005:00:00→12:29:00 6h 29m 1 stop via CLT · 12:49:00→15:21:00 3h 32m nonstopAxel-exclusive $518.702026-10-29T01:28:25Z
2026-11-15 → 2026-11-22Delta Air LinesDL1102 + DL1939 / DL595 + DL140314:31:00→21:08:00 5h 37m 1 stop via ATL · 17:35:00→23:26:00 6h 51m 1 stop via ATLAxel-exclusive $527.732026-10-29T01:28:25Z
2026-11-15 → 2026-11-22Southwest AirlinesWN1995 / WN199610:20:00→14:25:00 3h 05m nonstop · 16:00:00→18:10:00 3h 10m nonstopAxel-exclusive $496.382026-10-29T01:28:25Z
2026-11-15 → 2026-11-22Frontier AirlinesF986 / F9152 + F9447306:00:00→10:14:00 3h 14m nonstop · 11:28:00→17:42:00 7h 14m 1 stop via ATLAxel-exclusive $325.382026-10-29T01:28:25Z
2026-11-15 → 2026-11-22Southwest AirlinesWN1995 / WN390 + WN74212:20:00→16:25:00 3h 05m nonstop · 14:45:00→20:45:00 7h 00m 1 stop via BNAAxel-exclusive $482.132026-10-29T01:28:25Z
2026-11-15 → 2026-11-22Southwest AirlinesWN3155 + WN305 / WN198611:45:00→19:45:00 7h 00m 1 stop via HOU · 12:00:00→14:10:00 3h 10m nonstopAxel-exclusive $484.502026-10-29T01:28:25Z
2026-11-15 → 2026-11-22Southwest AirlinesWN1679 + WN218 / WN198613:05:00→20:25:00 6h 20m 1 stop via MDW · 12:00:00→14:10:00 3h 10m nonstopAxel-exclusive $484.502026-10-29T01:28:25Z

Hotels in Cancun for these trips

Hotels: under a trip, hotels in Cancun for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

All hotels in Cancun

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

2026-11-15 → 2026-11-22 · Axel-exclusive $339.63

  • Frontier Airlines F986: STL 2026-11-15 06:20:00 → CUN 2026-11-15 10:34:00; nonstop; 194 minutes. Local airport times.
  • Frontier Airlines F987: CUN 2026-11-22 14:05:00 → STL 2026-11-22 16:25:00; nonstop; 200 minutes. Local airport times.

2026-11-15 → 2026-11-22 · Axel-exclusive $496.38

  • Southwest Airlines WN1995: STL 2026-11-15 13:15:00 → CUN 2026-11-15 17:20:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN1986: CUN 2026-11-22 12:00:00 → STL 2026-11-22 14:10:00; nonstop; 190 minutes. Local airport times.

2026-11-15 → 2026-11-22 · Axel-exclusive $518.70

  • American Airlines AA1992 / AA895: STL 2026-11-15 05:00:00 → CUN 2026-11-15 12:29:00; 1 stop(s) via CLT; 389 minutes. Local airport times.
    • AA1992: STL 2026-11-15 05:00:00 → CLT 2026-11-15 07:55:00; layover at CLT: 85 minutes.
    • AA895: CLT 2026-11-15 09:20:00 → CUN 2026-11-15 12:29:00.
  • American Airlines AA3310: CUN 2026-11-22 12:49:00 → STL 2026-11-22 15:21:00; nonstop; 212 minutes. Local airport times.

2026-11-15 → 2026-11-22 · Axel-exclusive $527.73

  • Delta Air Lines DL1102 / DL1939: STL 2026-11-15 14:31:00 → CUN 2026-11-15 21:08:00; 1 stop(s) via ATL; 337 minutes. Local airport times.
    • DL1102: STL 2026-11-15 14:31:00 → ATL 2026-11-15 17:05:00; layover at ATL: 84 minutes.
    • DL1939: ATL 2026-11-15 18:29:00 → CUN 2026-11-15 21:08:00.
  • Delta Air Lines DL595 / DL1403: CUN 2026-11-22 17:35:00 → STL 2026-11-22 23:26:00; 1 stop(s) via ATL; 411 minutes. Local airport times.
    • DL595: CUN 2026-11-22 17:35:00 → ATL 2026-11-22 20:25:00; layover at ATL: 135 minutes.
    • DL1403: ATL 2026-11-22 22:40:00 → STL 2026-11-22 23:26:00.

2026-11-15 → 2026-11-22 · Axel-exclusive $496.38

  • Southwest Airlines WN1995: STL 2026-11-15 10:20:00 → CUN 2026-11-15 14:25:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN1996: CUN 2026-11-22 16:00:00 → STL 2026-11-22 18:10:00; nonstop; 190 minutes. Local airport times.

2026-11-15 → 2026-11-22 · Axel-exclusive $325.38

  • Frontier Airlines F986: STL 2026-11-15 06:00:00 → CUN 2026-11-15 10:14:00; nonstop; 194 minutes. Local airport times.
  • Frontier Airlines F9152 / F94473: CUN 2026-11-22 11:28:00 → STL 2026-11-22 17:42:00; 1 stop(s) via ATL; 434 minutes. Local airport times.
    • F9152: CUN 2026-11-22 11:28:00 → ATL 2026-11-22 14:18:00; layover at ATL: 151 minutes.
    • F94473: ATL 2026-11-22 16:49:00 → STL 2026-11-22 17:42:00.

2026-11-15 → 2026-11-22 · Axel-exclusive $482.13

  • Southwest Airlines WN1995: STL 2026-11-15 12:20:00 → CUN 2026-11-15 16:25:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN390 / WN742: CUN 2026-11-22 14:45:00 → STL 2026-11-22 20:45:00; 1 stop(s) via BNA; 420 minutes. Local airport times.
    • WN390: CUN 2026-11-22 14:45:00 → BNA 2026-11-22 16:35:00; layover at BNA: 175 minutes.
    • WN742: BNA 2026-11-22 19:30:00 → STL 2026-11-22 20:45:00.

2026-11-15 → 2026-11-22 · Axel-exclusive $484.50

  • Southwest Airlines WN3155 / WN305: STL 2026-11-15 11:45:00 → CUN 2026-11-15 19:45:00; 1 stop(s) via HOU; 420 minutes. Local airport times.
    • WN3155: STL 2026-11-15 11:45:00 → HOU 2026-11-15 13:50:00; layover at HOU: 165 minutes.
    • WN305: HOU 2026-11-15 16:35:00 → CUN 2026-11-15 19:45:00.
  • Southwest Airlines WN1986: CUN 2026-11-22 12:00:00 → STL 2026-11-22 14:10:00; nonstop; 190 minutes. Local airport times.

2026-11-15 → 2026-11-22 · Axel-exclusive $484.50

  • Southwest Airlines WN1679 / WN218: STL 2026-11-15 13:05:00 → CUN 2026-11-15 20:25:00; 1 stop(s) via MDW; 380 minutes. Local airport times.
    • WN1679: STL 2026-11-15 13:05:00 → MDW 2026-11-15 14:10:00; layover at MDW: 95 minutes.
    • WN218: MDW 2026-11-15 15:45:00 → CUN 2026-11-15 20:25:00.
  • Southwest Airlines WN1986: CUN 2026-11-22 12:00:00 → STL 2026-11-22 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

For AI assistants

  • This page: Saint Louis (STL) to Cancun (CUN) · Nov 15, 2026 · return Nov 22, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Cancun for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
  • Next: each priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own trip.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Saint Louis to Cancun (CUN) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.