LAS to SDF flight delays & on-time performance
Nonstop flights from Harry Reid International Airport to Louisville Muhammad Ali International Airport · 1,624 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at LAS or SDF right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Las Vegas (LAS) to Louisville (SDF) arrived on time 70% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1% were cancelled, and 10% arrived an hour or more late.
- Spirit Airlines was the most punctual airline here (91% on time); Southwest Airlines was the least (68%).
- Departures scheduled around 7am did best (96% on time); around 6pm did worst (48%).
- Wednesday was the most reliable day to fly (83% on time) and Tuesday the least (61%).
- The largest source of delay minutes was late-arriving aircraft (53%).
Which airline is most on time from LAS to SDF?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| American Airlines | 100% | 0.0% | 0 min | 0.0% | 1 |
| Spirit Airlines | 91% | 0.0% | 6 min | 3.0% | 33 |
| Southwest Airlines | 68% | 1.1% | 19 min | 11.1% | 365 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am96%28 flights
- 8am85%26 flights
- 10am80%45 flights
- 11am74%40 flights
- 12pm72%18 flights
- 2pm62%13 flights
- 4pm66%50 flights
- 5pm65%147 flights
- 6pm48%25 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday73%0.0% cancelled
- Tuesday61%1.9% cancelled
- Wednesday83%0.0% cancelled
- Thursday75%0.0% cancelled
- Friday64%0.0% cancelled
- Saturday73%1.9% cancelled
- Sunday63%3.3% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft53%
- Airline (crew, maintenance, cleaning, fueling)38%
- Air traffic control & airport congestion8%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather75%
- Airline (crew, maintenance, cleaning, fueling)25%
- Air traffic control & airport congestion0%
- Security0%
LAS to SDF: common questions
- How often are LAS to SDF flights on time?
- 70% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Las Vegas to Louisville cancelled?
- 1.0% of scheduled flights were cancelled (4 of 399).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 56 min behind schedule on average, and 10.4% of flights were an hour or more late.
- How long is taxi time at LAS?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SDF to LAS — 85% on time
More flights from Las Vegas
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: LAS → SDF, nonstop flights by US airlines that report to the DOT. How we calculate this.