Appleton (ATW) to Denver (DEN): On-Time Performance
Data through July 2026
Appleton (ATW) to Denver (DEN) effectively runs on two schedules. In September 2024, 95% of arrivals were on time; in July 2025 that fell to 65% — a 30-point seasonal swing. Across the full period the route averages 80% on-time against a national 78%.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 1.1
- last 12 months
- Duration
- 2h 56m
- scheduled
- Distance
- 883 mi
Best airline from ATW to DEN
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 89% | 7 min | 0.0% | 71 |
| SkyWest Airlines | 80% | 16 min | 0.8% | 709 |
| Allegiant Air | 70% | 21 min | 0.0% | 111 |
Monthly on-time trend
Best time to fly from ATW to DEN
Aim for departures around 8 a.m. (82% on-time); avoid 4 p.m. departures (55%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 82% | 10 min |
| Tuesday | 77% | 19 min |
| Wednesday | 80% | 18 min |
| Thursday | 75% | 19 min |
| Friday | 82% | 16 min |
| Saturdaybest | 83% | 13 min |
| Sunday | 81% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft6%
- Airline operations59%
- National airspace system22%
- Weather13%
Frequently asked questions
- How often are flights from ATW to DEN delayed?
- 20% of ATW–DEN flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 16 minutes.
- Which airline is most reliable from ATW to DEN?
- United Airlines has the best on-time record on this route at 89%, based on 71 flights. 3 airlines flew ATW–DEN frequently enough to compare in this period.
- What is the best time of day to fly from ATW to DEN?
- Departures around 8 a.m. have the best record (82% on-time), while departures around 4 p.m. have the worst (55%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ATW to DEN?
- The scheduled ATW–DEN flight time averages 2h 56m over 883 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are ATW to DEN flights cancelled?
- 0.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from ATW to DEN?
- July 2025 was the roughest month in this dataset, with only 65% of arrivals on time. The best was September 2024 at 95%. If your dates are flexible, that 30-point gap is worth planning around.
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Based on 891 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.