Airports › Denver (DEN) › October 2025
Airport month · October 2025
Denver International in October 2025
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In October 2025, reporting carriers scheduled 27,763 domestic departures from Denver International (DEN). 80.4% left less than 15 minutes late and 80.5% reached their destination on time; 0.1% were cancelled.
Nationally that month, 80.0% of flights departed on time and 79.1% arrived on time, so DEN departures were level with the national departure figure.
A year earlier, in October 2024, the airport had 26,929 departures with 85.4% leaving on time: a change of −5.0 points, with flights up 3%.
Flights arriving at DEN that month were on time 81.3% of the time (27,764 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 39%, air carrier 37% and national aviation system 22%.
- On time 80.5%
- Arrived 15+ minutes late 19.1%
- Cancelled 0.1%
- Diverted 0.2%
October 2025 against a year earlier, the airport's year and the nation
| Measure | Oct 2025 | Oct 2024 | DEN, 12 months to Jul 2026 | All reported flights, Oct 2025 |
|---|---|---|---|---|
| Departed on time | 80.4% | 85.4% | 75.7% | 80.0% |
| Arrived on time | 80.5% | 86.1% | 76.1% | 79.1% |
| Cancelled | 0.1% | 0.4% | 0.7% | 0.5% |
| Average departure delay (late minutes only) | 11.7 min | 9.1 min | 16.5 min | 13.9 min |
| Scheduled departures a day | 925 | 898 | 875 | 20,195 |
| Scheduled departures | 27,763 | 26,929 | 319,208 | 605,844 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 9,375 | 34% | 83.9% | 1.0 min | 0.1% |
| WN Southwest Airlines | 7,711 | 28% | 70.8% | 10.3 min | 0.1% |
| OO SkyWest Airlines | 6,403 | 23% | 86.7% | -1.5 min | 0.0% |
| F9 Frontier Airlines | 2,106 | 8% | 81.4% | 2.5 min | 0.2% |
| DL Delta Air Lines | 1,024 | 4% | 84.7% | 2.5 min | 0.5% |
| AA American Airlines | 782 | 3% | 79.9% | 9.5 min | 0.6% |
| AS Alaska Airlines | 221 | 1% | 76.9% | 6.2 min | 1.8% |
| B6 JetBlue Airways | 97 | 0% | 64.9% | 17.1 min | 0.0% |
| G4 Allegiant Air | 42 | 0% | 81.0% | 10.7 min | 0.0% |
| MQ Envoy Air | 2 | 0% | 50.0% | 25.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| DEN–PHX | Denver to Phoenix | 802 | 74.7% | 10.9 min | 0.2% |
| DEN–LAX | Denver to Los Angeles | 684 | 84.2% | 2.1 min | 0.0% |
| DEN–SLC | Denver to Salt Lake City | 663 | 81.4% | 4.4 min | 0.0% |
| DEN–LAS | Denver to Las Vegas | 653 | 74.3% | 9.5 min | 0.0% |
| DEN–ORD | Denver to Chicago | 616 | 76.3% | 8.6 min | 0.3% |
| DEN–SEA | Denver to Seattle | 552 | 79.2% | 5.0 min | 0.7% |
| DEN–SAN | Denver to San Diego | 532 | 72.6% | 8.2 min | 0.2% |
| DEN–MSP | Denver to Minneapolis | 529 | 83.7% | -1.5 min | 0.2% |
| DEN–DFW | Denver to Dallas/Fort Worth | 522 | 79.1% | 8.9 min | 1.0% |
| DEN–ATL | Denver to Atlanta | 474 | 83.5% | -2.2 min | 0.0% |
| DEN–SFO | Denver to San Francisco | 460 | 70.9% | 10.1 min | 0.2% |
| DEN–COS | Denver to Colorado Springs | 450 | 81.6% | 1.7 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left DEN on time in October 2025?
80.4% of 27,763 scheduled domestic departures left less than 15 minutes late, and 80.5% reached their destination on time. The national figures that month were 80.0% and 79.1%.
How does that compare with a year earlier?
In October 2024, 85.4% of 26,929 departures left on time and 0.4% were cancelled, against 80.4% and 0.1% in October 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for October 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for DEN · methodology · corrections.