DEN → STLDenver to St Louis

live

Direct flights from Denver (DEN) to St Louis (STL): 20 nonstop departures observed each week across 3 airlines. 86% of the last 14 operated flights arrived within 15 minutes of schedule. The median arrival is on schedule. No cancellations were recorded across the 14 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 Denver and St Louis. Updated 13 September 2026 at 17:39 UTC.

DEN Denver smooth · +0
STL St Louis smooth · +0
1,236 km · ~2h 05m est.
dep bank 06:35–22:0520x weekly
Runs reliable · 3 airlines · 20x weekly · nonstop
86% on time

of the last 14 operated DEN → STL flights arrived within 15 minutes

Median arrival delay is +0 min. 0 of 14 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+0 minacross the last 14 operated legs
Flight time~2h 05mestimated from route distance
Weekly departures20x3 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 14

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Frontier 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
Frontier AirlinesF9

Flights F93302 16:00 Mo We Th Fr Sa Su

Southwest AirlinesWN86% on time

Flights WN1694 06:35 Tu We Su · WN1260 07:00 Mo Th Fr · WN4334 07:25 Su · WN1965 08:05 Mo Th Fr

United AirlinesUA80% on time

Flights UA652 09:35 daily · UA1639 13:27 daily · UA1422 17:35 daily · UA1297 20:25 Th Su

History

operated legs · board outcomes
09-13F93302dep −8 → arr−22
09-13UA652dep +0 → arr−29
09-13WN1694dep −1 → arr−17
09-13WN1695dep +21 → arr−24
09-13WN4334dep +16 → arr−5
09-12F93302departed+0
09-12UA1422departed+5
09-12UA1639departed−7
09-12UA4778departed+50
09-12UA652departed−10
09-12WN1695departed+13
09-12WN237departed+3
09-12WN241departed+58
09-12WN4696departed+5

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
DENDenver +0 min smooth 🌤 few clouds · SW 6 kt Full DEN delay board →
STLSt Louis +0 min smooth 🌤 mostly cloudy · NNW 7 kt Full STL delay board →

Weather lens

Current conditions put the pressure at DEN and STL: 44% 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 Denver to St Louis route actually runs

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

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

DEN to STL questions

Is DEN–STL 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 DEN–STL?

Operators schedule morning departures around 06:35 and evening departures around 17:35 from DEN. 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 DEN to STL?

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 DEN–STL fly?

3 carriers operate this route, around 75 flights a week between them. Compare carrier days and times in the airline list above.