Airlines › United Airlines › December 2024
Carrier month · December 2024
United Airlines in December 2024
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 December 2024, United Airlines (UA) reported 64,030 scheduled domestic flights. 80.6% arrived on time, 0.5% were cancelled and 0.2% diverted.
All reporting carriers together recorded 78.1% on time and 0.7% cancelled that month, so the carrier was 2.5 points above the combined figure.
A year earlier, in December 2023, it reported 59,844 flights with 86.3% on time: a change of −5.7 points.
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 38%, air carrier 31% and national aviation system 25%.
- On time 80.6%
- Arrived 15+ minutes late 18.7%
- Cancelled 0.5%
- Diverted 0.2%
December 2024 against a year earlier, the carrier's year and all carriers
| Measure | Dec 2024 | Dec 2023 | UA, 12 months to Jul 2026 | All carriers, Dec 2024 |
|---|---|---|---|---|
| Arrived on time | 80.6% | 86.3% | 78.2% | 78.1% |
| Departed on time | 81.3% | 86.8% | 80.6% | 77.8% |
| Cancelled | 0.5% | 0.1% | 1.0% | 0.7% |
| Average arrival delay | 4.3 min | -2.2 min | 6.3 min | 7.1 min |
| Scheduled flights a day | 2,134 | 1,995 | 2,262 | 19,686 |
| Scheduled flights | 64,030 | 59,844 | 825,693 | 590,581 |
119 airports and 846 routes had UA flights that month.
Busiest airports that month
| Airport | Departures | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|
| DEN Denver | 8,548 | 85.9% | -0.5 min | 0.2% |
| ORD Chicago | 7,127 | 79.7% | 4.3 min | 0.2% |
| IAH Houston | 6,011 | 75.7% | 10.7 min | 1.3% |
| EWR Newark | 5,952 | 73.4% | 7.7 min | 0.5% |
| SFO San Francisco | 4,584 | 79.8% | 3.3 min | 0.4% |
| IAD Washington | 2,743 | 80.3% | 3.8 min | 0.3% |
| LAX Los Angeles | 2,383 | 83.3% | -0.1 min | 0.3% |
| LAS Las Vegas | 1,264 | 86.2% | -1.2 min | 0.3% |
| MCO Orlando | 1,248 | 78.4% | 8.4 min | 0.9% |
| PHX Phoenix | 1,016 | 87.6% | 0.2 min | 0.2% |
| BOS Boston | 973 | 81.0% | 3.5 min | 0.9% |
| SAN San Diego | 880 | 74.7% | 19.5 min | 1.0% |
| FLL Fort Lauderdale | 834 | 80.0% | 4.1 min | 0.5% |
| TPA Tampa | 803 | 82.6% | 0.5 min | 0.1% |
| AUS Austin | 725 | 82.1% | 4.8 min | 0.4% |
By scheduled departure hour
Delay causes
Questions and answers
What share of United Airlines flights were on time in December 2024?
80.6% of 64,030 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 78.1% that month.
How does that compare with a year earlier?
In December 2023 the carrier reported 59,844 flights with 86.3% on time and 0.1% cancelled, against 80.6% and 0.5% in December 2024.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2024; public domain. Domestic scheduled flights, totals and averages only. The site's data runs through July 2026. Full record for United Airlines · methodology · corrections.