Best Time to Fly LAS to PHX: On-Time Stats by Hour & Airline
Harry Reid International → Phoenix Sky Harbor International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 78.0% of Las Vegas (LAS) to Phoenix (PHX) flights arrived on time (6,018 scheduled flights). That is in line with the national average of 77.6%.
American Airlines was the most punctual of the 3 airlines on the route at 79.8%, while Southwest Airlines trailed at 76.6%.
December has been the best month (85% on time) and Thursday the weakest day of the week (75%).
1.0% of flights were cancelled, versus 1.8% nationally.
LAS to PHX 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 |
|---|---|---|---|---|
| American Airlines | 79.8% | 78 min | 0.9% | 1,689 |
| Frontier Airlines | 79.6% | 100 min | 1.2% | 859 |
| Southwest Airlines | 76.6% | 51 min | 1.0% | 3,449 |
| Envoy Air | Limited data | 2 | ||
| SkyWest Airlines | Limited data | 19 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LAS to PHX
On-time arrival % by scheduled departure hour (local time), 12,929 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 96.9% | 0.8% | 517 |
| 6am–7am | 93.6% | 0.5% | 1,268 |
| 7am–8am | 91.8% | 0.7% | 711 |
| 8am–9am | 89.4% | 0.2% | 569 |
| 9am–10am | 89.3% | 1.0% | 803 |
| 10am–11am | 88.7% | 1.4% | 874 |
| 11am–12pm | 84.2% | 0.6% | 492 |
| 12pm–1pm | 81.1% | 1.1% | 1,066 |
| 1pm–2pm | 78.0% | 0.9% | 909 |
| 2pm–3pm | 68.7% | 0.9% | 441 |
| 3pm–4pm | 70.3% | 1.2% | 686 |
| 4pm–5pm | 71.1% | 0.4% | 939 |
| 5pm–6pm | 72.6% | 1.5% | 615 |
| 6pm–7pm | 66.7% | 1.1% | 733 |
| 7pm–8pm | 72.0% | 0.8% | 894 |
| 8pm–9pm | 71.5% | 0.8% | 585 |
| 9pm–10pm | 70.9% | 0.7% | 557 |
| 10pm–11pm | 67.7% | 0.0% | 269 |
| 11pm–12am | Limited data | 1 | |
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 PHX
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) | 87.0% | +5.6 pts | 0.9% | 233 |
| Christmas & New Year (Dec 20 - Jan 3) | 77.9% | -3.5 pts | 0.9% | 461 |
| Summer peak (Jun 15 - Aug 15) | 73.1% | -8.4 pts | 1.2% | 2,025 |
| All other days | 81.5% | — | 0.8% | 10,210 |
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).