Best Time to Fly ATW to ORD: On-Time Stats by Hour & Airline
Appleton International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
2,430 flights were scheduled from Appleton (ATW) to Chicago (ORD) in the last 12 months, and 71.1% of those that flew arrived on time, 6.5 points below the US average of 77.6%.
Envoy Air was the most punctual of the 2 airlines on the route at 77.8%, while SkyWest Airlines trailed at 64.6%.
May has been the best month (80% on time) and Friday the weakest day of the week (67%).
4.7% of flights were cancelled, versus 1.8% nationally.
ATW 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 |
|---|---|---|---|---|
| Envoy Air | 77.8% | 71 min | 3.3% | 1,174 |
| SkyWest Airlines | 64.6% | 93 min | 6.0% | 1,256 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ATW to ORD
On-time arrival % by scheduled departure hour (local time), 4,734 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 90.0% | 2.6% | 226 |
| 6am–7am | 82.0% | 2.0% | 845 |
| 7am–8am | 81.1% | 0.0% | 37 |
| 8am–9am | 77.3% | 2.9% | 418 |
| 9am–10am | 80.4% | 2.2% | 277 |
| 10am–11am | 74.0% | 2.4% | 205 |
| 11am–12pm | 81.7% | 1.4% | 144 |
| 12pm–1pm | 67.6% | 2.5% | 355 |
| 1pm–2pm | 65.1% | 2.9% | 277 |
| 2pm–3pm | 72.2% | 3.6% | 280 |
| 3pm–4pm | 64.3% | 2.3% | 442 |
| 4pm–5pm | 62.3% | 2.4% | 125 |
| 5pm–6pm | 55.5% | 5.1% | 661 |
| 6pm–7pm | 62.8% | 5.4% | 368 |
| 7pm–8pm | 46.8% | 11.3% | 53 |
| 8pm–9pm | Limited data | 16 | |
| 9pm–10pm | Limited data | 5 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ATW 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) | 61.2% | -10.9 pts | 15.2% | 79 |
| Christmas & New Year (Dec 20 - Jan 3) | 66.2% | -5.9 pts | 7.4% | 163 |
| Summer peak (Jun 15 - Aug 15) | 68.6% | -3.5 pts | 1.8% | 880 |
| All other days | 72.1% | — | 3.2% | 3,612 |
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).