St. George (SGU) to Denver (DEN): On-Time Performance
Data through May 2026
When you fly SGU to DEN matters as much as anything else about the booking: the route swung from 95% on-time in October 2024 to just 64% in June 2025. Across the full period the route averages 80% on-time against a national 78%. Morning departures also hold up better than evening ones (89% vs 75%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 22 min
- completed flights
- Cancelled
- 0.2%
- Flights/day
- 3.0
- last 12 months
- Duration
- 1h 55m
- scheduled
- Distance
- 517 mi
Monthly on-time trend
Best time to fly from SGU to DEN
Aim for departures around 5 a.m. (90% on-time); avoid 1 p.m. departures (74%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 80% | 23 min |
| Tuesday | 75% | 26 min |
| Wednesday | 82% | 23 min |
| Thursday | 79% | 26 min |
| Friday | 82% | 22 min |
| Saturdaybest | 83% | 17 min |
| Sunday | 80% | 21 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft31%
- Airline operations41%
- National airspace system20%
- Weather8%
Frequently asked questions
- How often are flights from SGU to DEN delayed?
- 20% of SGU–DEN flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 22 minutes.
- What is the best time of day to fly from SGU to DEN?
- Departures around 5 a.m. have the best record (90% on-time), while departures around 1 p.m. have the worst (74%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SGU to DEN?
- The scheduled SGU–DEN flight time averages 1h 55m over 517 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are SGU to DEN flights cancelled?
- 0.2% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from SGU to DEN?
- June 2025 was the roughest month in this dataset, with only 64% of arrivals on time. The best was October 2024 at 95%. If your dates are flexible, that 31-point gap is worth planning around.
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Based on 1,968 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.