CUN → STLCancún to St Louis

live

Direct flights from Cancún (CUN) to St Louis (STL): 14 nonstop departures observed each week across 2 airlines. The median arrival is 25 minutes early. No cancellations were recorded across the 4 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 Cancún and St Louis. Updated 16 October 2026 at 03:18 UTC.

Today, CUN → STL

Thu 15 Oct · local times
  1. 11:08 F987Frontier Left 11:18 +10 Landed 13:50 −35
  2. 14:40 WN1996Southwest Airlines Left 14:40 Landed 17:25 −25

Checked CUN board 21:39 · STL board 22:18

CUN Cancún busy · +25
STL St Louis smooth · +4
1,998 km · ~3h 04m est.
dep bank 11:08–14:4014x weekly
Running clean · 2 airlines · 14x weekly · nonstop
79 / 100

route health from live CUN and STL delay boards

Median arrival delay is −25 min. 0 of 4 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−25 minacross the last 4 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 F987 11:08 daily

Southwest AirlinesWN

Flights WN1986 12:45 Sa · WN1996 varies daily

History

operated legs · board outcomes
10-15F987dep +10 → arr−35
10-15WN1996dep +0 → arr−25
10-14F987dep +20 → arr−10
10-14WN1996dep +10 → arr−26

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
CUNCancún +25 min busy 🌤 overcast · ESE 8 kt Full CUN delay board →
STLSt Louis +4 min smooth ⛅ overcast · NW 18 kt Full STL delay board →

Weather lens

Current conditions put the pressure at STL: 35% 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 Cancún to St Louis route actually runs

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

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

CUN to STL questions

Is CUN–STL running on time right now?

Mostly on schedule. The departure side at CUN is the weaker end, route health score 79/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on CUN–STL?

Operators schedule morning departures around 11:08 from CUN. Earlier flights typically land before destination-airport delays accumulate later in the day; check the STL delay card to confirm conditions when you'd arrive.

How long is the flight from CUN to STL?

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 CUN–STL fly?

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