Best Time to Fly PDX to PSP: On-Time Stats by Hour & Airline
Portland International → Palm Springs International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 83.8% of Portland (PDX) to Palm Springs (PSP) flights arrived on time (738 scheduled flights). That is 6.2 points above the national average of 77.6%.
Among 2 airlines, Alaska Airlines led with 88.1% on time and SkyWest Airlines was last with 74.3%.
Over 24 months, Sunday was the most reliable day (87% on time) and September the worst month (63%).
The cancellation rate was 1.2% (US average 1.8%).
PDX to PSP 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 |
|---|---|---|---|---|
| Alaska Airlines | 88.1% | 43 min | 1.0% | 508 |
| SkyWest Airlines | 74.3% | 50 min | 1.7% | 230 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PDX to PSP
On-time arrival % by scheduled departure hour (local time), 1,407 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 4 | |
| 7am–8am | 93.8% | 1.4% | 215 |
| 8am–9am | 88.7% | 0.0% | 124 |
| 9am–10am | Limited data | 1 | |
| 10am–11am | 85.6% | 0.8% | 119 |
| 1pm–2pm | Limited data | 1 | |
| 2pm–3pm | 88.1% | 0.0% | 269 |
| 3pm–4pm | 82.9% | 2.8% | 72 |
| 4pm–5pm | Limited data | 4 | |
| 5pm–6pm | 77.4% | 0.8% | 386 |
| 6pm–7pm | 87.9% | 0.0% | 66 |
| 7pm–8pm | 83.3% | 1.9% | 105 |
| 8pm–9pm | 72.7% | 0.0% | 34 |
| 9pm–10pm | Limited data | 7 | |
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 PSP
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) | 73.5% | -13.2 pts | 0.0% | 34 |
| Christmas & New Year (Dec 20 - Jan 3) | 76.1% | -10.6 pts | 4.2% | 71 |
| Summer peak (Jun 15 - Aug 15) | 73.2% | -13.6 pts | 0.9% | 109 |
| All other days | 86.8% | — | 0.7% | 1,193 |
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).