AUS to LAS flight delays & on-time performance
Nonstop flights from Austin Bergstrom International Airport to Harry Reid International Airport · 1,090 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at AUS or LAS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Austin (AUS) to Las Vegas (LAS) arrived on time 73% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.5% were cancelled, and 8% arrived an hour or more late.
- Southwest Airlines was the most punctual airline here (74% on time); Frontier Airlines was the least (68%).
- Departures scheduled around 6am did best (98% on time); around 8pm did worst (52%).
- Wednesday was the most reliable day to fly (81% on time) and Monday the least (67%).
- The largest source of delay minutes was late-arriving aircraft (52%).
Which airline is most on time from AUS 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 |
|---|---|---|---|---|---|
| Allegiant Air | 84% | 0.0% | 16 min | 5.3% | 19 |
| Southwest Airlines | 74% | 0.3% | 14 min | 6.3% | 2,195 |
| Delta Air Lines | 70% | 0.8% | 27 min | 10.5% | 365 |
| Frontier Airlines | 68% | 1.0% | 25 min | 13.0% | 295 |
| Spirit Airlines | 25% | 0.0% | 36 min | 25.0% | 4 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am96%216 flights
- 6am98%112 flights
- 7am100%63 flights
- 8am96%136 flights
- 9am94%80 flights
- 10am91%118 flights
- 11am79%149 flights
- 12pm75%142 flights
- 1pm75%170 flights
- 2pm66%145 flights
- 3pm70%499 flights
- 4pm59%229 flights
- 5pm58%171 flights
- 6pm59%80 flights
- 7pm65%149 flights
- 8pm52%213 flights
- 9pm60%88 flights
- 10pm60%118 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday67%0.4% cancelled
- Tuesday80%0.6% cancelled
- Wednesday81%0.3% cancelled
- Thursday71%0.0% cancelled
- Friday69%0.9% cancelled
- Saturday80%0.7% cancelled
- Sunday71%0.4% 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 aircraft52%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion15%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather46%
- Airline (crew, maintenance, cleaning, fueling)38%
- Air traffic control & airport congestion15%
- Security0%
AUS to LAS: common questions
- How often are AUS to LAS flights on time?
- 73% 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 Austin to Las Vegas cancelled?
- 0.5% of scheduled flights were cancelled (13 of 2,878).
- How long are typical delays?
- Across all flights the average arrival delay was 16 min (early arrivals count as zero). Flights that were late arrived 57 min behind schedule on average, and 7.5% of flights were an hour or more late.
- How long is taxi time at AUS?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LAS to AUS — 74% on time
More flights from Austin
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: AUS → LAS, nonstop flights by US airlines that report to the DOT. How we calculate this.