Best Time to Fly PDX to GEG: On-Time Stats by Hour & Airline
Portland International → Spokane International
Data through July 2026 · Last updated October 18, 2026
1,030 flights were scheduled from Portland (PDX) to Spokane (GEG) in the last 12 months, and 86.1% of those that flew arrived on time, 8.5 points above the US average of 77.6%.
Among 2 airlines, SkyWest Airlines led with 86.3% on time and Alaska Airlines was last with 85.9%.
Over 24 months, Monday was the most reliable day (89% on time) and May the worst month (79%).
The cancellation rate was 0.9% (US average 1.8%).
PDX to GEG 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 | 86.3% | 46 min | 0.2% | 446 |
| Alaska Airlines | 85.9% | 40 min | 1.4% | 584 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PDX to GEG
On-time arrival % by scheduled departure hour (local time), 1,476 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 86.0% | 1.1% | 87 |
| 8am–9am | Limited data | 3 | |
| 10am–11am | 82.9% | 1.1% | 373 |
| 12pm–1pm | 84.4% | 0.0% | 122 |
| 2pm–3pm | 88.7% | 0.0% | 371 |
| 5pm–6pm | 80.7% | 0.0% | 114 |
| 9pm–10pm | 85.8% | 1.0% | 398 |
| 10pm–11pm | Limited data | 8 | |
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 GEG
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) | 83.3% | -1.9 pts | 0.0% | 30 |
| Christmas & New Year (Dec 20 - Jan 3) | 80.3% | -5.0 pts | 1.4% | 72 |
| Summer peak (Jun 15 - Aug 15) | 86.6% | +1.3 pts | 0.0% | 306 |
| All other days | 85.3% | — | 0.8% | 1,068 |
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).