SDF to LAS flight delays & on-time performance
Nonstop flights from Louisville Muhammad Ali International Airport to Harry Reid International Airport · 1,624 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SDF or LAS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Louisville (SDF) to Las Vegas (LAS) arrived on time 85% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.8% were cancelled, and 8% arrived an hour or more late.
- Southwest Airlines was the most punctual airline here (86% on time); Spirit Airlines was the least (73%).
- Departures scheduled around 6am did best (92% on time); around 10am did worst (69%).
- Wednesday was the most reliable day to fly (92% on time) and Sunday the least (77%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (47%).
Which airline is most on time from SDF to LAS?
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 |
|---|---|---|---|---|---|
| Southwest Airlines | 86% | 0.8% | 10 min | 6.1% | 365 |
| Spirit Airlines | 73% | 0.0% | 41 min | 21.2% | 33 |
| American Airlines | 0% | 0.0% | 187 min | 100.0% | 1 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am92%99 flights
- 7am89%47 flights
- 8am92%62 flights
- 10am69%16 flights
- 11am90%21 flights
- 1pm75%32 flights
- 2pm83%23 flights
- 3pm80%42 flights
- 4pm79%28 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday88%1.7% cancelled
- Tuesday85%0.0% cancelled
- Wednesday92%0.0% cancelled
- Thursday87%0.0% cancelled
- Friday82%0.0% cancelled
- Saturday86%1.9% cancelled
- Sunday77%1.6% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)47%
- Late-arriving aircraft33%
- Air traffic control & airport congestion18%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Air traffic control & airport congestion0%
- Security0%
SDF to LAS: common questions
- How often are SDF to LAS flights on time?
- 85% 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 Louisville to Las Vegas cancelled?
- 0.8% of scheduled flights were cancelled (3 of 399).
- How long are typical delays?
- Across all flights the average arrival delay was 14 min (early arrivals count as zero). Flights that were late arrived 82 min behind schedule on average, and 7.6% of flights were an hour or more late.
- How long is taxi time at SDF?
- Flights on this route spent 13 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LAS to SDF — 70% on time
More flights from Louisville
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SDF → LAS, nonstop flights by US airlines that report to the DOT. How we calculate this.