Denver International (DEN) Delays and On-Time Departures
Denver, CO · ranked 269th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
76.2% of the 319,208 flights scheduled to depart Denver (DEN) in the last 12 months left on time, 1.2 points below the US average of 77.4%.
That ranks 269th of 333 US airports tracked on this site, with 0.7% of departures cancelled.
Delta Air Lines was the most punctual airline here, with 83.0% of departures on time.
October has been the best month (83% on time) and Sunday the weakest day of the week (74%).
Best time of day to fly out of Denver (DEN)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | 77.6% | 1.2% | 2,242 |
| 5am–6am | 94.5% | 0.6% | 7,612 |
| 6am–7am | 93.4% | 0.8% | 19,561 |
| 7am–8am | 90.1% | 0.6% | 31,746 |
| 8am–9am | 89.1% | 0.6% | 36,049 |
| 9am–10am | 85.7% | 0.5% | 47,788 |
| 10am–11am | 81.2% | 0.5% | 40,120 |
| 11am–12pm | 81.6% | 0.4% | 62,008 |
| 12pm–1pm | 76.5% | 0.8% | 24,309 |
| 1pm–2pm | 80.3% | 0.7% | 57,175 |
| 2pm–3pm | 70.4% | 1.0% | 23,767 |
| 3pm–4pm | 73.8% | 0.9% | 34,013 |
| 4pm–5pm | 69.2% | 1.1% | 30,084 |
| 5pm–6pm | 70.0% | 0.8% | 61,526 |
| 6pm–7pm | 59.0% | 0.9% | 23,163 |
| 7pm–8pm | 64.1% | 0.8% | 55,064 |
| 8pm–9pm | 65.0% | 1.1% | 38,655 |
| 9pm–10pm | 65.7% | 0.9% | 21,968 |
| 10pm–11pm | 60.9% | 1.2% | 8,641 |
| 11pm–12am | 77.2% | 1.1% | 9,240 |
Airlines at DEN ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| Delta Air Lines | 83.0% | 83.5% | 1.3% | 11,542 |
| SkyWest Airlines | 81.9% | 80.4% | 1.0% | 75,286 |
| United Airlines | 81.2% | 79.1% | 0.4% | 107,510 |
| Alaska Airlines | 79.4% | 78.0% | 0.7% | 2,786 |
| Envoy Air | 78.6% | 74.8% | 0.6% | 324 |
| Frontier Airlines | 77.6% | 78.6% | 0.7% | 22,770 |
| Allegiant Air | 77.5% | 74.9% | 0.5% | 384 |
| American Airlines | 75.5% | 77.1% | 2.0% | 8,903 |
| JetBlue | 65.2% | 69.1% | 3.9% | 1,253 |
| Southwest Airlines | 64.3% | 70.0% | 0.6% | 88,450 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of DEN
On-time departures by day, 24 months.
Best month to fly out of DEN
On-time departures by month, 24 months.
Holiday travel at Denver (DEN)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 77.3% | -1.2 pts | 0.4% | 11,860 |
| Christmas & New Year (Dec 20 - Jan 3) | 72.9% | -5.6 pts | 0.5% | 26,436 |
| Summer peak (Jun 15 - Aug 15) | 66.9% | -11.6 pts | 1.0% | 116,833 |
| All other days | 78.5% | — | 0.7% | 479,602 |
Monthly on-time departure trend at DEN
On-time departure % each month, with the 12-month US average for reference.
Routes from Denver (DEN)
Every route from DEN with its own page, by number of flights (last 12 months, on-time arrivals).