Best Time to Fly ORD to SUX: On-Time Stats by Hour & Airline
Chicago O'Hare International → Sioux Gateway Brig Gen Bud Day Field
Data through July 2026 · Last updated October 18, 2026
365 flights were scheduled from Chicago (ORD) to Sioux City (SUX) in the last 12 months, and 61.7% of those that flew arrived on time, 15.9 points below the US average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
September has been the best month (83% on time) and Sunday the weakest day of the week (59%).
4.9% of flights were cancelled, versus 1.8% nationally.
ORD 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 | 61.7% | 107 min | 4.9% | 365 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to SUX
On-time arrival % by scheduled departure hour (local time), 730 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 10am–11am | Limited data | 1 | |
| 2pm–3pm | Limited data | 3 | |
| 3pm–4pm | 61.0% | 5.6% | 144 |
| 4pm–5pm | 43.5% | 1.6% | 64 |
| 8pm–9pm | 61.4% | 3.1% | 224 |
| 9pm–10pm | 71.7% | 3.7% | 294 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ORD 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 | 14 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 30 | ||
| Summer peak (Jun 15 - Aug 15) | 56.0% | -9.3 pts | 4.0% | 124 |
| All other days | 65.3% | — | 2.9% | 562 |
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).