Las Vegas (LAS) to Pittsburgh (PIT): On-Time Performance
Data through July 2026
Las Vegas (LAS) to Pittsburgh (PIT) effectively runs on two schedules. In November 2024, 96% of arrivals were on time; in June 2026 that fell to 46% — a 50-point seasonal swing. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 70%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 0.3%
- Flights/day
- 2.0
- last 12 months
- Duration
- 4h 11m
- scheduled
- Distance
- 1,910 mi
Best airline from LAS to PIT
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 82% | 10 min | 0.9% | 339 |
| Southwest Airlines | 76% | 13 min | 0.2% | 1,386 |
Monthly on-time trend
Best time to fly from LAS to PIT
Aim for departures around 11 a.m. (88% on-time); avoid 1 p.m. departures (50%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 16 min |
| Tuesday | 81% | 9 min |
| Wednesdaybest | 85% | 7 min |
| Thursday | 75% | 14 min |
| Friday | 72% | 16 min |
| Saturday | 85% | 8 min |
| Sunday | 73% | 14 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft40%
- Airline operations45%
- National airspace system14%
- Weather1%
Frequently asked questions
- How often are flights from LAS to PIT delayed?
- 23% of LAS–PIT flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 12 minutes.
- Which airline is most reliable from LAS to PIT?
- Spirit Airlines has the best on-time record on this route at 82%, based on 339 flights. 2 airlines flew LAS–PIT frequently enough to compare in this period.
- What is the best time of day to fly from LAS to PIT?
- Departures around 11 a.m. have the best record (88% on-time), while departures around 1 p.m. have the worst (50%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from LAS to PIT?
- The scheduled LAS–PIT flight time averages 4h 11m over 1,910 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are LAS to PIT flights cancelled?
- 0.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from LAS to PIT?
- June 2026 was the roughest month in this dataset, with only 46% of arrivals on time. The best was November 2024 at 96%. If your dates are flexible, that 50-point gap is worth planning around.
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Based on 1,725 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.