Best Time to Fly DEN to ATW: On-Time Stats by Hour & Airline
Denver International → Appleton International
Data through July 2026 · Last updated October 18, 2026
411 flights were scheduled from Denver (DEN) to Appleton (ATW) in the last 12 months, and 69.7% of those that flew arrived on time, 7.9 points below the US average of 77.6%.
SkyWest Airlines was the most punctual of the 3 airlines on the route at 73.9%, while United Airlines trailed at 56.9%.
December has been the best month (84% on time) and Thursday the weakest day of the week (58%).
0.7% of flights were cancelled, versus 1.8% nationally.
DEN 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 |
|---|---|---|---|---|
| SkyWest Airlines | 73.9% | 50 min | 1.0% | 292 |
| Allegiant Air | 63.8% | 92 min | 0.0% | 47 |
| United Airlines | 56.9% | 61 min | 0.0% | 72 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to ATW
On-time arrival % by scheduled departure hour (local time), 853 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | Limited data | 20 | |
| 10am–11am | Limited data | 4 | |
| 12pm–1pm | Limited data | 8 | |
| 1pm–2pm | Limited data | 1 | |
| 4pm–5pm | Limited data | 2 | |
| 5pm–6pm | 74.1% | 0.8% | 750 |
| 6pm–7pm | Limited data | 6 | |
| 7pm–8pm | 66.7% | 0.0% | 30 |
| 8pm–9pm | 36.7% | 6.2% | 32 |
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 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) | Limited data | 13 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 30 | ||
| Summer peak (Jun 15 - Aug 15) | 64.9% | -9.2 pts | 0.5% | 186 |
| All other days | 74.0% | — | 1.0% | 624 |
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).