SDF → DENLouisville to Denver

live

Direct flights from Louisville (SDF) to Denver (DEN): 14 nonstop departures observed each week across 2 airlines. The median arrival is 6 minutes early. No cancellations were recorded across the 4 tracked flights. The nonstop covers 1,644 km, an estimated 2 hours 36 minutes in the air. Measured by Pro Flight Search from live flight boards at Louisville and Denver. Updated 11 September 2026 at 15:38 UTC.

SDF Louisville smooth · +10
DEN Denver smooth · +0
1,644 km · ~2h 36m est.
dep bank 08:00–15:2514x weekly
Under pressure · 2 airlines · 14x weekly · nonstop
67 / 100

route health from live SDF and DEN delay boards

Median arrival delay is −6 min. 0 of 4 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−6 minacross the last 4 operated legs
Flight time~2h 36mestimated 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
Southwest 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
Southwest AirlinesWN

Flights WN550 10:40 Mo Th Fr · WN314 12:10 Tu We · WN4499 varies Su · WN2901 14:55 Sa

United AirlinesUA

Flights UA1547 08:00 daily · UA1641 08:00 Tu We Th Fr · UA1510 15:25 daily

History

operated legs · board outcomes
09-11UA1641dep +20 → arr−6
09-10UA1510arrived−9
09-10UA1641arrived−20
09-10WN550arrived+35

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
SDFLouisville +10 min smooth 🌫 overcast · SE 4 kt Full SDF delay board →
DENDenver +0 min smooth 🌤 mostly cloudy · WSW 6 kt Full DEN delay board →

Weather lens

Current conditions put the pressure at SDF: 50% odds of a 15+ minute delay and around +45 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Louisville to Denver route actually runs

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

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

SDF to DEN questions

Is SDF–DEN running on time right now?

Some delays possible. The departure side at SDF is the weaker end, route health score 67/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on SDF–DEN?

Operators schedule morning departures around 08:00 from SDF. 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 SDF to DEN?

Great-circle distance is 1,644 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 146–171 min gate-to-gate on this route.

How often does SDF–DEN fly?

2 carriers operate this route, around 25 flights a week between them. Compare carrier days and times in the airline list above.