SDF → DENLouisville to Denver

live

Direct flights from Louisville (SDF) to Denver (DEN): 20 nonstop departures observed each week across 2 airlines. 100% of the last 21 tracked flights arrived within 15 minutes of schedule. The median arrival is 23 minutes early. No cancellations were recorded across the 21 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 12 November 2026 at 16:08 UTC.

Today, SDF → DEN

Thu 12 Nov · local times
  1. 08:00 UA405United Airlines Left 08:11 +11 Landed 08:48 −16
  2. 13:05 WN2859Southwest Airlines On schedule DEN 14:00scheduled
  3. · UA1510United Airlines On schedule DEN 16:29scheduled

Checked SDF board 10:03 · DEN board 09:08

SDF Louisville smooth · +0
DEN Denver smooth · +0
1,644 km · ~2h 36m est.
dep bank 06:50–15:2420x weekly
Runs reliable · 2 airlines · 20x weekly · nonstop
100% on time

of the last 21 tracked SDF → DEN flights arrived within 15 minutes

Median arrival delay is −23 min. 0 of 21 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−23 minacross the last 21 arrivals
Flight time~2h 36mestimated from route distance
Weekly departures20x2 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 21

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 AirlinesWN100% on time

Flights WN3403 06:50 Tu We · WN2859 13:05 Mo Th Fr Su

United AirlinesUA100% on time

Flights UA405 08:00 daily · UA1510 15:24 daily

History

operated legs · board outcomes
11-12UA405dep +11 → arr−16
11-11UA1510dep +4 → arr−12
11-11UA405dep +7 → arr−19
11-11WN3403dep +8 → arr−22
11-10UA1510dep +1 → arr−31
11-10UA405arrived−31
11-10WN3403dep +3 → arr−39
11-09UA1510dep +8 → arr−33
11-09UA405dep +11 → arr−20
11-09WN2859dep +27 → arr+2
11-08UA1510dep +5 → arr−30
11-08UA405dep +8 → arr−35
11-08WN2859dep +12 → arr−16
11-07UA1510dep +0 → arr−32
11-07UA405dep +4 → arr−30
11-06UA1510dep +8 → arr−23
11-06UA405dep +7 → arr−27
11-06WN2859dep +10 → arr−17
11-05UA1510dep +10 → arr−24
11-05UA405dep +2 → arr−23
11-05WN2859dep +30 → arr+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
SDFLouisville +0 min smooth 🌤 mostly cloudy · W 9 kt Full SDF delay board →
DENDenver +0 min smooth 🌤 few clouds · SSW 10 kt Full DEN delay board →

Weather lens

Conditions are tightest at SDF and DEN: a 37% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +6 min. Both figures come from the two airports' delay records in similar weather. 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?

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 SDF–DEN?

Operators schedule morning departures around 06:50 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 20 flights a week between them. Compare carrier days and times in the airline list above.