STL → CUNSt Louis to Cancún

live

Direct flights from St Louis (STL) to Cancún (CUN): 14 nonstop departures observed each week across 2 airlines. 80% of the last 5 operated flights arrived within 15 minutes of schedule. The median arrival is 4 minutes early. No cancellations were recorded across the 5 tracked flights. The nonstop covers 1,998 km, an estimated 3 hours 4 minutes in the air. Measured by Pro Flight Search from live flight boards at St Louis and Cancún. Updated 15 October 2026 at 09:38 UTC.

Today, STL → CUN

Thu 15 Oct · local times
  1. · F986Frontier On schedule CUN 09:39scheduled
  2. · WN1995Southwest Airlines On schedule CUN 13:15scheduled

Checked STL board 22:18 · CUN board 04:38

STL St Louis smooth · +7
CUN Cancún smooth · +0
1,998 km · ~3h 04m est.
dep bank 06:30–10:0514x weekly
Runs reliable · 2 airlines · 14x weekly · nonstop
80% on time

of the last 5 operated STL → CUN flights arrived within 15 minutes

Median arrival delay is −4 min. 0 of 5 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−4 minacross the last 5 operated legs
Flight time~3h 04mestimated from route distance
Weekly departures14x2 direct airlines on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Frontier AirlinesSouthwest Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Frontier AirlinesF9

Flights F986 06:30 daily

Southwest AirlinesWN

Flights WN1985 09:20 Sa · WN1995 varies daily

History

operated legs · board outcomes
10-14F986dep +23 → arr+0
10-14WN1995dep +23 → arr−8
10-13F986dep −1 → arr−29
10-13WN1995dep +0 → arr+18
10-12F986arrived−4

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
STLSt Louis +7 min smooth 🌤 mostly cloudy · N 0 kt Full STL delay board →
CUNCancún +0 min smooth 🌤 mostly cloudy · N 0 kt Full CUN delay board →

Weather lens

Current conditions put the pressure at STL: 36% odds of a 15+ minute delay and around +9 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the St Louis to Cancún route actually runs

Pro Flight Search records official board updates for nonstop STL to CUN flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — St Louis (STL) to Cancún (CUN) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/STL-CUN
How we measure this →

STL to CUN questions

Is STL–CUN running on time right now?

Smooth skies ahead. The departure side at STL is the weaker end, route health score 94/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on STL–CUN?

Operators schedule morning departures around 06:30 from STL. Earlier flights typically land before destination-airport delays accumulate later in the day; check the CUN delay card to confirm conditions when you'd arrive.

How long is the flight from STL to CUN?

Great-circle distance is 1,998 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 171–201 min gate-to-gate on this route.

How often does STL–CUN fly?

2 carriers operate this route, around 15 flights a week between them. Compare carrier days and times in the airline list above.