Best Time to Fly PDX to PHX: On-Time Stats by Hour & Airline
Portland International → Phoenix Sky Harbor International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 79.3% of Portland (PDX) to Phoenix (PHX) flights arrived on time (3,750 scheduled flights). That is 1.7 points above the national average of 77.6%.
SkyWest Airlines was the most punctual of the 6 airlines on the route at 90.6%, while Southwest Airlines trailed at 74.5%.
February has been the best month (87% on time) and Thursday the weakest day of the week (79%).
0.4% of flights were cancelled, versus 1.8% nationally.
PDX 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 |
|---|---|---|---|---|
| SkyWest Airlines | 90.6% | 151 min | 0.0% | 85 |
| Alaska Airlines | 83.2% | 47 min | 0.4% | 1,406 |
| Frontier Airlines | 82.1% | 69 min | 0.0% | 85 |
| Envoy Air | 80.6% | 45 min | 0.0% | 36 |
| American Airlines | 78.8% | 143 min | 0.9% | 868 |
| Southwest Airlines | 74.5% | 52 min | 0.2% | 1,270 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PDX to PHX
On-time arrival % by scheduled departure hour (local time), 7,806 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 92.5% | 0.7% | 986 |
| 6am–7am | 93.3% | 0.6% | 166 |
| 7am–8am | 87.4% | 0.6% | 718 |
| 8am–9am | 90.5% | 0.4% | 486 |
| 9am–10am | 89.5% | 0.5% | 394 |
| 10am–11am | 87.0% | 0.2% | 564 |
| 11am–12pm | 87.9% | 0.0% | 521 |
| 12pm–1pm | 86.8% | 0.8% | 122 |
| 1pm–2pm | 74.8% | 0.4% | 231 |
| 2pm–3pm | 79.2% | 0.0% | 755 |
| 3pm–4pm | 73.5% | 0.6% | 715 |
| 4pm–5pm | 61.8% | 0.0% | 207 |
| 5pm–6pm | 73.5% | 0.2% | 863 |
| 6pm–7pm | 74.0% | 0.2% | 413 |
| 7pm–8pm | 66.0% | 0.0% | 97 |
| 8pm–9pm | 71.8% | 0.6% | 346 |
| 9pm–10pm | 69.3% | 2.5% | 204 |
| 10pm–11pm | Limited data | 18 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PDX 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) | 83.0% | -0.5 pts | 0.0% | 171 |
| Christmas & New Year (Dec 20 - Jan 3) | 75.8% | -7.7 pts | 0.3% | 361 |
| Summer peak (Jun 15 - Aug 15) | 73.6% | -9.9 pts | 0.6% | 1,252 |
| All other days | 83.5% | — | 0.4% | 6,022 |
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).