Best Time to Fly GEG to PDX: On-Time Stats by Hour & Airline
Spokane International → Portland International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 86.1% of Spokane (GEG) to Portland (PDX) flights arrived on time (1,028 scheduled flights). That is 8.4 points above the national average of 77.6%.
Alaska Airlines was the most punctual of the 2 airlines on the route at 91.0%, while SkyWest Airlines trailed at 79.7%.
April has been the best month (99% on time) and Thursday the weakest day of the week (83%).
0.9% of flights were cancelled, versus 1.8% nationally.
GEG to PDX 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 | 91.0% | 48 min | 1.2% | 583 |
| SkyWest Airlines | 79.7% | 62 min | 0.5% | 445 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly GEG to PDX
On-time arrival % by scheduled departure hour (local time), 1,473 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 97.0% | 0.6% | 339 |
| 6am–7am | 87.1% | 1.4% | 71 |
| 8am–9am | 95.2% | 0.0% | 62 |
| 9am–10am | Limited data | 20 | |
| 10am–11am | Limited data | 3 | |
| 12pm–1pm | 83.2% | 1.3% | 373 |
| 2pm–3pm | 84.4% | 0.0% | 122 |
| 3pm–4pm | 78.6% | 0.2% | 426 |
| 7pm–8pm | 84.2% | 0.0% | 57 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on GEG to PDX
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) | 90.0% | +2.0 pts | 0.0% | 30 |
| Christmas & New Year (Dec 20 - Jan 3) | 87.3% | -0.7 pts | 1.4% | 72 |
| Summer peak (Jun 15 - Aug 15) | 77.8% | -10.2 pts | 0.0% | 306 |
| All other days | 88.0% | — | 0.8% | 1,065 |
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).