Best Time to Fly GEG to DEN: On-Time Stats by Hour & Airline
Spokane International → Denver International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 84.2% of Spokane (GEG) to Denver (DEN) flights arrived on time (2,052 scheduled flights). That is 6.6 points above the national average of 77.6%.
SkyWest Airlines was the most punctual of the 4 airlines on the route at 86.7%, while Frontier Airlines trailed at 79.8%.
January has been the best month (92% on time) and Tuesday the weakest day of the week (80%).
0.3% of flights were cancelled, versus 1.8% nationally.
GEG to DEN 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 | 86.7% | 104 min | 0.8% | 250 |
| United Airlines | 85.5% | 83 min | 0.4% | 834 |
| Southwest Airlines | 82.7% | 54 min | 0.1% | 858 |
| Frontier Airlines | 79.8% | 34 min | 0.0% | 110 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly GEG to DEN
On-time arrival % by scheduled departure hour (local time), 4,025 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.4% | 0.2% | 1,174 |
| 6am–7am | 94.7% | 0.0% | 229 |
| 7am–8am | 85.1% | 0.0% | 47 |
| 8am–9am | Limited data | 3 | |
| 9am–10am | 82.8% | 0.0% | 58 |
| 10am–11am | 93.4% | 0.0% | 91 |
| 11am–12pm | 83.1% | 0.0% | 189 |
| 12pm–1pm | 78.1% | 0.0% | 232 |
| 1pm–2pm | 77.7% | 0.1% | 886 |
| 2pm–3pm | 61.3% | 0.4% | 238 |
| 3pm–4pm | 72.7% | 0.0% | 133 |
| 4pm–5pm | 79.2% | 0.7% | 590 |
| 5pm–6pm | Limited data | 1 | |
| 6pm–7pm | 77.7% | 2.6% | 152 |
| 9pm–10pm | Limited data | 2 | |
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 DEN
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) | 88.3% | +3.2 pts | 0.0% | 77 |
| Christmas & New Year (Dec 20 - Jan 3) | 87.1% | +2.0 pts | 0.0% | 170 |
| Summer peak (Jun 15 - Aug 15) | 75.6% | -9.5 pts | 0.9% | 773 |
| All other days | 85.1% | — | 0.2% | 3,005 |
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).