Pittsburgh (PIT) to Las Vegas (LAS): On-Time Performance
Data through May 2026
When you fly PIT to LAS matters as much as anything else about the booking: the route swung from 89% on-time in October 2024 to just 61% in January 2025. Across the full period the route averages 81% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 71%), which matters most in the rough months.
- On-time
- 81%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 0.5%
- Flights/day
- 2.2
- last 12 months
- Duration
- 4h 46m
- scheduled
- Distance
- 1,910 mi
Best airline from PIT to LAS
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 81% | 14 min | 0.8% | 369 |
| Southwest Airlines | 80% | 11 min | 0.4% | 1,357 |
Monthly on-time trend
Best time to fly from PIT to LAS
Aim for departures around 6 a.m. (94% on-time); avoid 8 p.m. departures (59%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 14 min |
| Tuesdaybest | 86% | 9 min |
| Wednesday | 84% | 13 min |
| Thursday | 74% | 12 min |
| Friday | 76% | 13 min |
| Saturday | 86% | 8 min |
| Sunday | 81% | 11 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft43%
- Airline operations26%
- National airspace system27%
- Weather4%
Frequently asked questions
- How often are flights from PIT to LAS delayed?
- 20% of PIT–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 12 minutes.
- Which airline is most reliable from PIT to LAS?
- Spirit Airlines has the best on-time record on this route at 81%, based on 369 flights. 2 airlines flew PIT–LAS frequently enough to compare in this period.
- What is the best time of day to fly from PIT to LAS?
- Departures around 6 a.m. have the best record (94% on-time), while departures around 8 p.m. have the worst (59%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PIT to LAS?
- The scheduled PIT–LAS flight time averages 4h 46m over 1,910 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are PIT to LAS flights cancelled?
- 0.5% 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 PIT to LAS?
- January 2025 was the roughest month in this dataset, with only 61% of arrivals on time. The best was October 2024 at 89%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 1,726 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.