STL → DENSt Louis to Denver

live

Direct flights from St Louis (STL) to Denver (DEN): 24 nonstop departures observed each week across 4 airlines. 50% of the last 10 operated flights arrived within 15 minutes of schedule. The median arrival is 25 minutes late. No cancellations were recorded across the 10 tracked flights. The nonstop covers 1,236 km, an estimated 2 hours 5 minutes in the air. Measured by Pro Flight Search from live flight boards at St Louis and Denver. Updated 28 October 2026 at 13:41 UTC.

Today, STL → DEN

Wed 28 Oct · local times
  1. 06:30 WN3356Southwest Airlines Left 06:30 Landed 07:50
  2. 08:35 WN4062Southwest Airlines On scheduleT2 DEN est. 09:46sched 09:55
  3. 08:50 UA1352United Airlines On scheduleT1 DEN 10:21scheduled
  4. · F94567Frontier Airlines On schedule DEN 17:48scheduled
  5. · UA1380United Airlines On schedule DEN 15:09scheduled
  6. · UA663United Airlines On schedule DEN 18:10scheduled
  7. · WN1374Southwest Airlines On schedule DEN 15:55scheduled
  8. · WN1405Southwest Airlines On schedule DEN 14:00scheduled
  9. · WN3854Southwest Airlines On schedule DEN est. 19:35 +5sched 19:30
  10. · WN4067Southwest Airlines On schedule DEN 22:15scheduled

Checked STL board 06:18 · DEN board 07:41

STL St Louis smooth · +0
DEN Denver smooth · +0
1,236 km · ~2h 05m est.
dep bank 05:10–21:5024x weekly
Runs rough · 4 airlines · 24x weekly · nonstop
50% on time

of the last 10 operated STL → DEN flights arrived within 15 minutes

Median arrival delay is +25 min. 0 of 10 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+25 minacross the last 10 operated legs
Flight time~2h 05mestimated from route distance
Weekly departures24x4 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 10

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
American AirlinesFrontier AirlinesSouthwest AirlinesUnited 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
American AirlinesAA

Flights AA5089 06:00 Mo Tu Th Fr Sa Su

Frontier AirlinesF9

Flights F94567 varies Mo We Fr Sa

Southwest AirlinesWN57% on time

Flights WN3356 varies daily · WN1230 08:30 Su · WN4062 08:35 Mo Tu We Th Fr Sa · WN4063 12:15 Mo Th Fr

United AirlinesUA

Flights UA5548 05:10 daily · UA1352 08:50 Mo Tu We Su · UA2459 09:00 daily · UA1380 13:36 daily

History

operated legs · board outcomes
10-28WN3356dep +0 → arr+0
10-27UA1352arrived+61
10-27UA1380arrived+25
10-27UA663arrived+12
10-27WN1374arrived−12
10-27WN1405arrived+25
10-27WN3356arrived−6
10-27WN3854arrived−8
10-27WN4062arrived+98
10-27WN4067arrived+51

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 +0 min smooth 🌤 few clouds · S 4 kt Full STL delay board →
DENDenver +0 min smooth 🌤 mostly cloudy · S 4 kt Full DEN delay board →

Weather lens

Current conditions put the pressure at STL and DEN: 42% 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 Denver route actually runs

Pro Flight Search records official board updates for nonstop STL to DEN 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 Denver (DEN) route reliability, measured from operated flights on official airport boards.

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

STL to DEN questions

Is STL–DEN running on time right now?

Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on STL–DEN?

Operators schedule morning departures around 05:10 and evening departures around 17:30 from STL. Earlier flights typically land before destination-airport delays accumulate later in the day; check the DEN delay card to confirm conditions when you'd arrive.

How long is the flight from STL to DEN?

Great-circle distance is 1,236 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 117–136 min gate-to-gate on this route.

How often does STL–DEN fly?

4 carriers operate this route, around 89 flights a week between them. Compare carrier days and times in the airline list above.