Austin (AUS) to Las Vegas (LAS): On-Time Performance
Data through May 2026
The calendar drives reliability on AUS–LAS. October 2024 flights landed on schedule 89% of the time, but July 2024 dropped to 63% — a gap of 25 points. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (93% vs 68%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 0.4%
- Flights/day
- 7.9
- last 12 months
- Duration
- 2h 58m
- scheduled
- Distance
- 1,090 mi
Best airline from AUS to LAS
5 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 83% | 11 min | 0.4% | 231 |
| Southwest Airlines | 79% | 12 min | 0.3% | 4,308 |
| American Airlines | 73% | 34 min | 0.0% | 128 |
| Delta Air Lines | 72% | 26 min | 0.8% | 730 |
| Frontier Airlines | 69% | 29 min | 1.4% | 562 |
Monthly on-time trend
Best time to fly from AUS to LAS
Aim for departures around 6 a.m. (97% on-time); avoid 4 p.m. departures (64%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 73% | 19 min |
| Tuesday | 83% | 12 min |
| Wednesday | 83% | 12 min |
| Thursday | 74% | 17 min |
| Friday | 75% | 16 min |
| Saturdaybest | 85% | 12 min |
| Sunday | 75% | 18 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft51%
- Airline operations28%
- National airspace system17%
- Weather4%
Frequently asked questions
- How often are flights from AUS to LAS delayed?
- 23% of AUS–LAS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 15 minutes.
- Which airline is most reliable from AUS to LAS?
- Spirit Airlines has the best on-time record on this route at 83%, based on 231 flights. 5 airlines flew AUS–LAS frequently enough to compare in this period.
- What is the best time of day to fly from AUS to LAS?
- Departures around 6 a.m. have the best record (97% on-time), while departures around 4 p.m. have the worst (64%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from AUS to LAS?
- The scheduled AUS–LAS flight time averages 2h 58m over 1,090 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are AUS to LAS flights cancelled?
- 0.4% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from AUS to LAS?
- July 2024 was the roughest month in this dataset, with only 63% of arrivals on time. The best was October 2024 at 89%. If your dates are flexible, that 25-point gap is worth planning around.
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Based on 6,026 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.