Best Time to Fly SUX to ORD: On-Time Stats by Hour & Airline
Sioux Gateway Brig Gen Bud Day Field → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 78.4% of Sioux City (SUX) to Chicago (ORD) flights arrived on time (365 scheduled flights). That is 0.8 points above the national average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Thursday was the most reliable day (83% on time) and December the worst month (46%).
The cancellation rate was 1.6% (US average 1.8%).
SUX to ORD 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 | 78.4% | 100 min | 1.6% | 365 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SUX to ORD
On-time arrival % by scheduled departure hour (local time), 730 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 18 | |
| 7am–8am | 74.4% | 2.4% | 292 |
| 8am–9am | 88.3% | 0.0% | 61 |
| 10am–11am | 71.7% | 1.3% | 224 |
| 12pm–1pm | 78.2% | 2.6% | 114 |
| 1pm–2pm | Limited data | 21 | |
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 ORD
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) | 76.9% | -0.7 pts | 0.8% | 124 |
| All other days | 77.6% | — | 1.2% | 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).