Airports › Denver (DEN) › April 2025
Airport month · April 2025
Denver International in April 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 April 2025, reporting carriers scheduled 25,280 domestic departures from Denver International (DEN). 75.3% left less than 15 minutes late and 74.4% reached their destination on time; 0.6% were cancelled.
Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so DEN departures were 5.3 points below the national departure figure.
A year earlier, in April 2024, the airport had 24,657 departures with 77.3% leaving on time: a change of −2.0 points, with flights up 3%.
Flights arriving at DEN that month were on time 73.7% of the time (25,281 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 49%, air carrier 26% and national aviation system 21%.
- On time 74.4%
- Arrived 15+ minutes late 24.7%
- Cancelled 0.6%
- Diverted 0.3%
April 2025 against a year earlier, the airport's year and the nation
| Measure | Apr 2025 | Apr 2024 | DEN, 12 months to Jul 2026 | All reported flights, Apr 2025 |
|---|---|---|---|---|
| Departed on time | 75.3% | 77.3% | 75.7% | 80.6% |
| Arrived on time | 74.4% | 77.4% | 76.1% | 79.5% |
| Cancelled | 0.6% | 0.4% | 0.7% | 0.8% |
| Average departure delay (late minutes only) | 18.4 min | 14.3 min | 16.5 min | 14.1 min |
| Scheduled departures a day | 843 | 822 | 875 | 19,465 |
| Scheduled departures | 25,280 | 24,657 | 319,208 | 583,950 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 8,207 | 32% | 77.4% | 8.3 min | 0.1% |
| WN Southwest Airlines | 7,540 | 30% | 71.1% | 13.3 min | 0.7% |
| OO SkyWest Airlines | 5,876 | 23% | 75.9% | 11.3 min | 0.9% |
| F9 Frontier Airlines | 1,791 | 7% | 71.9% | 10.4 min | 1.1% |
| DL Delta Air Lines | 899 | 4% | 75.1% | 9.0 min | 0.2% |
| AA American Airlines | 699 | 3% | 69.8% | 18.4 min | 1.6% |
| AS Alaska Airlines | 150 | 1% | 72.7% | 9.1 min | 1.3% |
| B6 JetBlue Airways | 62 | 0% | 74.2% | 0.1 min | 0.0% |
| MQ Envoy Air | 30 | 0% | 70.0% | 11.6 min | 0.0% |
| G4 Allegiant Air | 26 | 0% | 65.4% | 7.7 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| DEN–PHX | Denver to Phoenix | 841 | 72.3% | 9.7 min | 1.2% |
| DEN–LAS | Denver to Las Vegas | 680 | 75.0% | 13.3 min | 0.6% |
| DEN–LAX | Denver to Los Angeles | 642 | 79.4% | 4.3 min | 0.2% |
| DEN–SLC | Denver to Salt Lake City | 634 | 78.5% | 10.2 min | 0.6% |
| DEN–DFW | Denver to Dallas/Fort Worth | 514 | 65.8% | 22.1 min | 2.1% |
| DEN–ORD | Denver to Chicago | 492 | 72.6% | 17.0 min | 0.8% |
| DEN–SEA | Denver to Seattle | 483 | 76.8% | 8.5 min | 0.2% |
| DEN–SFO | Denver to San Francisco | 463 | 76.7% | 6.7 min | 0.0% |
| DEN–ATL | Denver to Atlanta | 443 | 64.8% | 17.6 min | 0.7% |
| DEN–MSP | Denver to Minneapolis | 437 | 70.7% | 15.1 min | 0.0% |
| DEN–SAN | Denver to San Diego | 434 | 76.0% | 6.8 min | 0.7% |
| DEN–COS | Denver to Colorado Springs | 430 | 71.6% | 18.7 min | 0.5% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left DEN on time in April 2025?
75.3% of 25,280 scheduled domestic departures left less than 15 minutes late, and 74.4% reached their destination on time. The national figures that month were 80.6% and 79.5%.
How does that compare with a year earlier?
In April 2024, 77.3% of 24,657 departures left on time and 0.4% were cancelled, against 75.3% and 0.6% in April 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 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.