Best Time to Fly SLC to GEG: On-Time Stats by Hour & Airline
Salt Lake City International → Spokane International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 86.2% of Salt Lake City (SLC) to Spokane (GEG) flights arrived on time (1,671 scheduled flights). That is 8.6 points above the national average of 77.6%.
Among 2 airlines, SkyWest Airlines led with 93.0% on time and Delta Air Lines was last with 81.1%.
Over 24 months, Wednesday was the most reliable day (91% on time) and July the worst month (81%).
The cancellation rate was 0.5% (US average 1.8%).
SLC 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 | 93.0% | 57 min | 0.1% | 719 |
| Delta Air Lines | 81.1% | 79 min | 0.7% | 952 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SLC to GEG
On-time arrival % by scheduled departure hour (local time), 3,330 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | Limited data | 18 | |
| 8am–9am | 93.9% | 0.0% | 678 |
| 11am–12pm | 86.4% | 0.3% | 725 |
| 12pm–1pm | Limited data | 4 | |
| 2pm–3pm | Limited data | 18 | |
| 3pm–4pm | 85.9% | 0.4% | 693 |
| 5pm–6pm | 86.0% | 0.0% | 464 |
| 8pm–9pm | Limited data | 2 | |
| 9pm–10pm | 89.2% | 0.6% | 159 |
| 10pm–11pm | 80.5% | 0.2% | 435 |
| 11pm–12am | 76.9% | 0.0% | 134 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SLC 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) | 80.0% | -8.3 pts | 0.0% | 60 |
| Christmas & New Year (Dec 20 - Jan 3) | 82.8% | -5.4 pts | 0.0% | 134 |
| Summer peak (Jun 15 - Aug 15) | 81.8% | -6.5 pts | 0.2% | 593 |
| All other days | 88.3% | — | 0.3% | 2,543 |
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).