Best Time to Fly ORD to ATW: On-Time Stats by Hour & Airline
Chicago O'Hare International → Appleton International
Data through July 2026 · Last updated October 18, 2026
2,429 flights were scheduled from Chicago (ORD) to Appleton (ATW) in the last 12 months, and 70.9% of those that flew arrived on time, 6.8 points below the US average of 77.6%.
Envoy Air was the most punctual of the 2 airlines on the route at 75.1%, while SkyWest Airlines trailed at 66.8%.
May has been the best month (79% on time) and Friday the weakest day of the week (67%).
4.8% of flights were cancelled, versus 1.8% nationally.
ORD to ATW 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 |
|---|---|---|---|---|
| Envoy Air | 75.1% | 64 min | 3.5% | 1,174 |
| SkyWest Airlines | 66.8% | 92 min | 6.1% | 1,255 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to ATW
On-time arrival % by scheduled departure hour (local time), 4,733 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | Limited data | 2 | |
| 7am–8am | 70.6% | 5.6% | 54 |
| 8am–9am | 83.9% | 1.9% | 363 |
| 9am–10am | 83.7% | 0.5% | 191 |
| 10am–11am | 70.0% | 2.4% | 376 |
| 11am–12pm | 69.3% | 1.5% | 265 |
| 12pm–1pm | 77.9% | 3.7% | 269 |
| 1pm–2pm | 71.6% | 1.5% | 325 |
| 2pm–3pm | 74.7% | 1.3% | 156 |
| 3pm–4pm | 69.8% | 3.7% | 804 |
| 4pm–5pm | 68.3% | 2.4% | 291 |
| 5pm–6pm | 65.8% | 3.2% | 463 |
| 6pm–7pm | 48.6% | 3.9% | 154 |
| 7pm–8pm | 72.5% | 2.0% | 249 |
| 8pm–9pm | 65.0% | 3.4% | 325 |
| 9pm–10pm | 82.1% | 8.1% | 74 |
| 10pm–11pm | 70.2% | 6.9% | 333 |
| 11pm–12am | 63.9% | 7.7% | 39 |
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 ATW
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) | 52.2% | -20.6 pts | 12.7% | 79 |
| Christmas & New Year (Dec 20 - Jan 3) | 61.7% | -11.1 pts | 6.1% | 164 |
| Summer peak (Jun 15 - Aug 15) | 67.1% | -5.7 pts | 1.8% | 881 |
| All other days | 72.8% | — | 3.1% | 3,609 |
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).