Best Time to Fly SEA to GEG: On-Time Stats by Hour & Airline
Seattle/Tacoma International → Spokane International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 83.1% of Seattle (SEA) to Spokane (GEG) flights arrived on time (5,062 scheduled flights). That is 5.5 points above the national average of 77.6%.
Among 3 airlines, SkyWest Airlines led with 87.8% on time and Delta Air Lines was last with 71.6%.
Over 24 months, Tuesday was the most reliable day (84% on time) and July the worst month (71%).
The cancellation rate was 1.0% (US average 1.8%).
SEA 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 | 87.8% | 58 min | 1.1% | 2,956 |
| Alaska Airlines | 77.6% | 44 min | 0.7% | 1,763 |
| Delta Air Lines | 71.6% | 77 min | 1.5% | 343 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SEA to GEG
On-time arrival % by scheduled departure hour (local time), 10,410 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 93.8% | 0.0% | 131 |
| 7am–8am | 94.5% | 0.5% | 603 |
| 8am–9am | 88.6% | 0.0% | 290 |
| 9am–10am | 83.7% | 1.3% | 859 |
| 10am–11am | 80.2% | 0.4% | 264 |
| 11am–12pm | 73.5% | 0.6% | 1,146 |
| 12pm–1pm | 84.9% | 2.0% | 250 |
| 1pm–2pm | 83.5% | 0.3% | 962 |
| 2pm–3pm | 73.8% | 0.0% | 203 |
| 3pm–4pm | 79.0% | 0.2% | 854 |
| 4pm–5pm | 59.5% | 1.2% | 85 |
| 5pm–6pm | 81.5% | 0.8% | 1,157 |
| 6pm–7pm | 73.1% | 0.0% | 93 |
| 7pm–8pm | 80.0% | 0.8% | 933 |
| 8pm–9pm | 74.7% | 0.0% | 312 |
| 9pm–10pm | 80.5% | 0.4% | 940 |
| 10pm–11pm | 70.8% | 0.7% | 1,072 |
| 11pm–12am | 82.0% | 0.4% | 256 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SEA 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) | 83.6% | +1.6 pts | 0.0% | 195 |
| Christmas & New Year (Dec 20 - Jan 3) | 77.2% | -4.8 pts | 0.3% | 348 |
| Summer peak (Jun 15 - Aug 15) | 71.7% | -10.4 pts | 0.5% | 1,880 |
| All other days | 82.0% | — | 0.6% | 7,987 |
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).