Spokane (GEG) to Denver (DEN): On-Time Performance
Data through July 2026
Spokane (GEG) to Denver (DEN) effectively runs on two schedules. In January 2025, 93% of arrivals were on time; in May 2025 that fell to 69% — a 24-point seasonal swing. Across the full period the route averages 83% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 79%), which matters most in the rough months.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 0.5%
- Flights/day
- 5.6
- last 12 months
- Duration
- 2h 19m
- scheduled
- Distance
- 836 mi
Best airline from GEG to DEN
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 85% | 13 min | 0.6% | 466 |
| United Airlines | 84% | 14 min | 0.9% | 1,775 |
| Southwest Airlines | 83% | 10 min | 0.1% | 1,828 |
| Frontier Airlines | 75% | 10 min | 0.0% | 140 |
Monthly on-time trend
Best time to fly from GEG to DEN
Aim for departures around 5 a.m. (94% on-time); avoid 2 p.m. departures (61%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 82% | 12 min |
| Tuesday | 81% | 16 min |
| Wednesday | 82% | 16 min |
| Thursday | 82% | 11 min |
| Friday | 82% | 14 min |
| Saturdaybest | 88% | 9 min |
| Sunday | 87% | 9 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft33%
- Airline operations26%
- National airspace system37%
- Weather4%
Frequently asked questions
- How often are flights from GEG to DEN delayed?
- 17% of GEG–DEN flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 12 minutes.
- Which airline is most reliable from GEG to DEN?
- SkyWest Airlines has the best on-time record on this route at 85%, based on 466 flights. 4 airlines flew GEG–DEN frequently enough to compare in this period.
- What is the best time of day to fly from GEG to DEN?
- Departures around 5 a.m. have the best record (94% on-time), while departures around 2 p.m. have the worst (61%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from GEG to DEN?
- The scheduled GEG–DEN flight time averages 2h 19m over 836 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
- How often are GEG to DEN flights cancelled?
- 0.5% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from GEG to DEN?
- May 2025 was the roughest month in this dataset, with only 69% of arrivals on time. The best was January 2025 at 93%. If your dates are flexible, that 24-point gap is worth planning around.
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Based on 4,209 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.