Airlines › United Airlines › September 2025
Carrier month · September 2025
United Airlines in September 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 September 2025, United Airlines (UA) reported 67,550 scheduled domestic flights. 82.6% arrived on time, 0.3% were cancelled and 0.2% diverted.
All reporting carriers together recorded 82.8% on time and 0.5% cancelled that month, so the carrier was level with the combined figure.
A year earlier, in September 2024, it reported 64,212 flights with 86.2% on time: a change of −3.6 points.
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 37%, national aviation system 33% and air carrier 26%.
- On time 82.6%
- Arrived 15+ minutes late 16.9%
- Cancelled 0.3%
- Diverted 0.2%
September 2025 against a year earlier, the carrier's year and all carriers
| Measure | Sep 2025 | Sep 2024 | UA, 12 months to Jul 2026 | All carriers, Sep 2025 |
|---|---|---|---|---|
| Arrived on time | 82.6% | 86.2% | 78.2% | 82.8% |
| Departed on time | 85.5% | 87.3% | 80.6% | 83.1% |
| Cancelled | 0.3% | 0.5% | 1.0% | 0.5% |
| Average arrival delay | 2.3 min | -1.7 min | 6.3 min | 2.3 min |
| Scheduled flights a day | 2,252 | 2,140 | 2,262 | 18,748 |
| Scheduled flights | 67,550 | 64,212 | 825,693 | 562,439 |
123 airports and 824 routes had UA flights that month.
Busiest airports that month
| Airport | Departures | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|
| DEN Denver | 8,932 | 80.3% | 5.1 min | 0.1% |
| ORD Chicago | 8,878 | 78.8% | 6.4 min | 0.2% |
| IAH Houston | 5,940 | 85.3% | -0.8 min | 0.1% |
| EWR Newark | 5,403 | 80.4% | 3.4 min | 0.6% |
| SFO San Francisco | 4,886 | 85.0% | 0.0 min | 0.2% |
| IAD Washington | 3,004 | 85.8% | -1.3 min | 0.1% |
| LAX Los Angeles | 2,208 | 85.7% | -3.7 min | 0.2% |
| LAS Las Vegas | 1,194 | 80.2% | 1.7 min | 0.2% |
| BOS Boston | 1,144 | 73.9% | 11.3 min | 0.8% |
| MCO Orlando | 1,065 | 87.0% | -2.8 min | 0.3% |
| AUS Austin | 914 | 84.6% | 0.3 min | 0.5% |
| SAN San Diego | 886 | 84.0% | -0.3 min | 1.4% |
| DFW Dallas/Fort Worth | 843 | 76.2% | 9.7 min | 0.6% |
| SEA Seattle | 831 | 88.3% | -1.2 min | 0.0% |
| LGA New York | 825 | 81.9% | 1.1 min | 0.4% |
By scheduled departure hour
Delay causes
Questions and answers
What share of United Airlines flights were on time in September 2025?
82.6% of 67,550 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 82.8% that month.
How does that compare with a year earlier?
In September 2024 the carrier reported 64,212 flights with 86.2% on time and 0.5% cancelled, against 82.6% and 0.3% in September 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 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.