Best Time to Fly LAS to PIT: On-Time Stats by Hour & Airline
Harry Reid International → Pittsburgh International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 75.6% of Las Vegas (LAS) to Pittsburgh (PIT) flights arrived on time (717 scheduled flights). That is 2.0 points below the national average of 77.6%.
Among 2 airlines, Spirit Airlines led with 91.9% on time and Southwest Airlines was last with 73.4%.
Over 24 months, Saturday was the most reliable day (86% on time) and June the worst month (62%).
The cancellation rate was 0.4% (US average 1.8%).
LAS to PIT on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlines | 91.9% | 61 min | 0.0% | 86 |
| Southwest Airlines | 73.4% | 48 min | 0.5% | 631 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LAS to PIT
On-time arrival % by scheduled departure hour (local time), 1,634 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 88.4% | 0.0% | 112 |
| 8am–9am | 85.8% | 0.0% | 275 |
| 9am–10am | 88.1% | 0.5% | 220 |
| 10am–11am | 83.3% | 0.0% | 74 |
| 11am–12pm | 88.4% | 0.8% | 122 |
| 12pm–1pm | Limited data | 15 | |
| 1pm–2pm | 50.0% | 0.0% | 56 |
| 2pm–3pm | Limited data | 15 | |
| 3pm–4pm | 75.3% | 1.3% | 78 |
| 4pm–5pm | 69.2% | 0.7% | 144 |
| 5pm–6pm | 74.2% | 0.0% | 306 |
| 6pm–7pm | 55.9% | 0.0% | 136 |
| 9pm–10pm | 76.2% | 0.0% | 42 |
| 10pm–11pm | Limited data | 28 | |
| 11pm–12am | Limited data | 11 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LAS to PIT
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 27 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 78.0% | -2.0 pts | 0.0% | 51 |
| Summer peak (Jun 15 - Aug 15) | 67.0% | -13.0 pts | 0.0% | 261 |
| All other days | 80.0% | — | 0.3% | 1,295 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).