Appleton (ATW) to Denver (DEN): On-Time Performance
Data through May 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
- 1.2
- last 12 months
- Duration
- 2h 57m
- scheduled
- Distance
- 883 mi
Best airline from ATW to DEN
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 81% | 16 min | 0.8% | 739 |
| Allegiant Air | 73% | 19 min | 0.0% | 102 |
Monthly on-time trend
Best time to fly from ATW to DEN
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 9 min |
| Tuesday | 78% | 19 min |
| Wednesday | 77% | 21 min |
| Thursday | 76% | 19 min |
| Friday | 81% | 16 min |
| Saturdaybest | 83% | 13 min |
| Sunday | 82% | 14 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 operations61%
- National airspace system20%
- 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 2024-06 and 2026-05. The average arrival delay across completed flights was 16 minutes.
- Which airline is most reliable from ATW to DEN?
- SkyWest Airlines has the best on-time record on this route at 81%, based on 739 flights. 2 airlines flew ATW–DEN frequently enough to compare in this period.
- How long is the flight from ATW to DEN?
- The scheduled ATW–DEN flight time averages 2h 57m 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 2024-06 and 2026-05, 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 851 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.