Best Time to Fly PHX to LAS: On-Time Stats by Hour & Airline
Phoenix Sky Harbor International → Harry Reid International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 78.2% of Phoenix (PHX) to Las Vegas (LAS) flights arrived on time (6,015 scheduled flights). That is 0.6 points above the national average of 77.6%.
Among 3 airlines, Frontier Airlines led with 81.0% on time and Southwest Airlines was last with 77.3%.
Over 24 months, Saturday was the most reliable day (87% on time) and June the worst month (72%).
The cancellation rate was 1.1% (US average 1.8%).
PHX to LAS 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 |
|---|---|---|---|---|
| Frontier Airlines | 81.0% | 116 min | 1.2% | 855 |
| American Airlines | 78.4% | 70 min | 0.9% | 1,688 |
| Southwest Airlines | 77.3% | 51 min | 1.1% | 3,451 |
| Envoy Air | Limited data | 2 | ||
| SkyWest Airlines | Limited data | 19 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PHX to LAS
On-time arrival % by scheduled departure hour (local time), 12,926 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | Limited data | 1 | |
| 5am–6am | 96.1% | 1.4% | 284 |
| 6am–7am | 96.3% | 0.7% | 463 |
| 7am–8am | 93.0% | 0.3% | 1,163 |
| 8am–9am | 90.4% | 0.8% | 901 |
| 9am–10am | 89.3% | 0.5% | 623 |
| 10am–11am | 83.7% | 0.0% | 962 |
| 11am–12pm | 83.0% | 0.9% | 1,012 |
| 12pm–1pm | 81.1% | 1.9% | 529 |
| 1pm–2pm | 78.3% | 0.7% | 759 |
| 2pm–3pm | 72.9% | 1.0% | 774 |
| 3pm–4pm | 71.5% | 0.2% | 605 |
| 4pm–5pm | 66.5% | 1.4% | 594 |
| 5pm–6pm | 66.4% | 1.2% | 590 |
| 6pm–7pm | 65.6% | 0.7% | 726 |
| 7pm–8pm | 71.2% | 1.7% | 588 |
| 8pm–9pm | 72.6% | 0.8% | 997 |
| 9pm–10pm | 70.1% | 0.3% | 592 |
| 10pm–11pm | 73.5% | 0.7% | 731 |
| 11pm–12am | 81.2% | 0.0% | 32 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PHX to LAS
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) | 78.5% | -2.0 pts | 0.0% | 232 |
| Christmas & New Year (Dec 20 - Jan 3) | 73.9% | -6.5 pts | 0.2% | 462 |
| Summer peak (Jun 15 - Aug 15) | 73.5% | -7.0 pts | 0.8% | 2,030 |
| All other days | 80.5% | — | 0.8% | 10,202 |
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).