Best Time to Fly DEN to SUX: On-Time Stats by Hour & Airline
Denver International → Sioux Gateway Brig Gen Bud Day Field
Data through July 2026 · Last updated October 18, 2026
518 flights were scheduled from Denver (DEN) to Sioux City (SUX) in the last 12 months, and 84.1% of those that flew arrived on time, 6.4 points above the US average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
March has been the best month (90% on time) and Monday the weakest day of the week (71%).
1.4% of flights were cancelled, versus 1.8% nationally.
DEN to SUX 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 | 84.1% | 86 min | 1.4% | 518 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to SUX
On-time arrival % by scheduled departure hour (local time), 882 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 90.7% | 1.4% | 207 |
| 11am–12pm | 77.3% | 2.2% | 45 |
| 12pm–1pm | 80.0% | 0.6% | 172 |
| 1pm–2pm | 69.0% | 0.0% | 58 |
| 2pm–3pm | 52.9% | 2.9% | 35 |
| 3pm–4pm | 76.2% | 1.4% | 210 |
| 8pm–9pm | Limited data | 12 | |
| 9pm–10pm | 79.1% | 1.4% | 143 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DEN to SUX
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) | 65.8% | -16.8 pts | 1.3% | 151 |
| All other days | 82.6% | — | 1.2% | 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).