Airlines › United Airlines › April 2025
Carrier month · April 2025
United Airlines 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, United Airlines (UA) reported 64,256 scheduled domestic flights. 81.2% arrived on time, 0.4% were cancelled and 0.3% diverted.
All reporting carriers together recorded 79.5% on time and 0.8% cancelled that month, so the carrier was 1.7 points above the combined figure.
A year earlier, in April 2024, it reported 61,044 flights with 80.2% on time: a change of +1.0 points.
Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 36%, late-arriving aircraft 36% and air carrier 24%.
- On time 81.2%
- Arrived 15+ minutes late 18.1%
- Cancelled 0.4%
- Diverted 0.3%
April 2025 against a year earlier, the carrier's year and all carriers
| Measure | Apr 2025 | Apr 2024 | UA, 12 months to Jul 2026 | All carriers, Apr 2025 |
|---|---|---|---|---|
| Arrived on time | 81.2% | 80.2% | 78.2% | 79.5% |
| Departed on time | 83.2% | 81.6% | 80.6% | 80.6% |
| Cancelled | 0.4% | 0.6% | 1.0% | 0.8% |
| Average arrival delay | 4.1 min | 3.8 min | 6.3 min | 5.7 min |
| Scheduled flights a day | 2,142 | 2,035 | 2,262 | 19,465 |
| Scheduled flights | 64,256 | 61,044 | 825,693 | 583,950 |
117 airports and 751 routes had UA flights that month.
Busiest airports that month
| Airport | Departures | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|
| DEN Denver | 8,207 | 77.4% | 8.3 min | 0.1% |
| ORD Chicago | 8,011 | 80.8% | 3.7 min | 0.7% |
| IAH Houston | 5,807 | 82.1% | 1.1 min | 0.1% |
| EWR Newark | 5,446 | 76.3% | 7.8 min | 0.7% |
| SFO San Francisco | 4,596 | 90.0% | -7.7 min | 0.2% |
| IAD Washington | 2,991 | 81.4% | 2.0 min | 0.2% |
| LAX Los Angeles | 2,231 | 87.3% | -4.6 min | 0.4% |
| LAS Las Vegas | 1,283 | 83.5% | 0.8 min | 0.2% |
| MCO Orlando | 1,272 | 81.1% | 4.2 min | 0.5% |
| BOS Boston | 1,048 | 79.9% | 6.4 min | 0.5% |
| PHX Phoenix | 981 | 83.8% | 1.2 min | 0.4% |
| AUS Austin | 862 | 85.0% | 1.8 min | 0.3% |
| SAN San Diego | 844 | 83.4% | -0.3 min | 0.4% |
| LGA New York | 810 | 79.1% | 2.9 min | 1.1% |
| DFW Dallas/Fort Worth | 794 | 72.2% | 17.7 min | 1.0% |
By scheduled departure hour
Delay causes
Questions and answers
What share of United Airlines flights were on time in April 2025?
81.2% of 64,256 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 79.5% that month.
How does that compare with a year earlier?
In April 2024 the carrier reported 61,044 flights with 80.2% on time and 0.6% cancelled, against 81.2% and 0.4% in April 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 2025; public domain. Domestic scheduled flights, totals and averages only. The site's data runs through July 2026. Full record for United Airlines · methodology · corrections.