Best Time to Fly SUX to DEN: On-Time Stats by Hour & Airline
Sioux Gateway Brig Gen Bud Day Field → Denver International
Data through July 2026 · Last updated October 18, 2026
518 flights were scheduled from Sioux City (SUX) to Denver (DEN) in the last 12 months, and 69.9% of those that flew arrived on time, 7.7 points below the US average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (75% on time) and August the worst month (55%).
The cancellation rate was 2.5% (US average 1.8%).
SUX 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 | 69.9% | 96 min | 2.5% | 518 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SUX to DEN
On-time arrival % by scheduled departure hour (local time), 882 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 74.0% | 2.2% | 134 |
| 11am–12pm | 89.0% | 0.0% | 73 |
| 3pm–4pm | 75.0% | 0.9% | 212 |
| 4pm–5pm | Limited data | 5 | |
| 5pm–6pm | 62.1% | 0.0% | 58 |
| 6pm–7pm | 58.7% | 3.4% | 382 |
| 7pm–8pm | Limited data | 18 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SUX 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) | Limited data | 12 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 30 | ||
| Summer peak (Jun 15 - Aug 15) | 63.9% | -4.9 pts | 4.0% | 151 |
| All other days | 68.8% | — | 1.6% | 689 |
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).