Airports › Chicago (ORD) › December 2024
Airport month · December 2024
Chicago O'Hare International 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, reporting carriers scheduled 22,668 domestic departures from Chicago O'Hare International (ORD). 77.7% left less than 15 minutes late and 76.4% reached their destination on time; 0.6% were cancelled.
Nationally that month, 77.8% of flights departed on time and 78.1% arrived on time, so ORD departures were level with the national departure figure.
A year earlier, in December 2023, the airport had 20,664 departures with 85.7% leaving on time: a change of −8.0 points, with flights up 10%.
Flights arriving at ORD that month were on time 78.3% of the time (22,652 scheduled arrivals).
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 21%.
- On time 76.4%
- Arrived 15+ minutes late 22.6%
- Cancelled 0.6%
- Diverted 0.3%
December 2024 against a year earlier, the airport's year and the nation
| Measure | Dec 2024 | Dec 2023 | ORD, 12 months to Jul 2026 | All reported flights, Dec 2024 |
|---|---|---|---|---|
| Departed on time | 77.7% | 85.7% | 71.4% | 77.8% |
| Arrived on time | 76.4% | 83.8% | 69.4% | 78.1% |
| Cancelled | 0.6% | 0.2% | 2.8% | 0.7% |
| Average departure delay (late minutes only) | 16.9 min | 10.2 min | 22.3 min | 16.6 min |
| Scheduled departures a day | 756 | 689 | 986 | 19,686 |
| Scheduled departures | 22,668 | 20,664 | 359,911 | 590,581 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 7,127 | 31% | 79.7% | 4.3 min | 0.2% |
| OO SkyWest Airlines | 4,143 | 18% | 68.1% | 18.8 min | 0.9% |
| AA American Airlines | 3,890 | 17% | 75.1% | 10.4 min | 0.4% |
| MQ Envoy Air | 2,553 | 11% | 75.6% | 6.0 min | 1.7% |
| YX Republic Airline | 2,512 | 11% | 82.8% | 0.5 min | 0.4% |
| DL Delta Air Lines | 858 | 4% | 80.0% | 2.1 min | 0.0% |
| NK Spirit Airlines | 630 | 3% | 77.1% | 6.5 min | 0.5% |
| WN Southwest Airlines | 428 | 2% | 83.4% | 0.5 min | 0.0% |
| F9 Frontier Airlines | 231 | 1% | 69.3% | 19.2 min | 1.3% |
| AS Alaska Airlines | 211 | 1% | 66.4% | 8.7 min | 0.5% |
| B6 JetBlue Airways | 85 | 0% | 76.5% | 3.7 min | 1.2% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| ORD–LGA | Chicago to New York | 861 | 73.9% | 8.4 min | 0.1% |
| ORD–LAX | Chicago to Los Angeles | 590 | 81.9% | -0.9 min | 0.3% |
| ORD–DFW | Chicago to Dallas/Fort Worth | 569 | 78.4% | 3.6 min | 0.9% |
| ORD–EWR | Chicago to Newark | 547 | 68.9% | 12.5 min | 0.2% |
| ORD–DCA | Chicago to Washington | 519 | 80.0% | 5.7 min | 0.2% |
| ORD–DEN | Chicago to Denver | 515 | 82.5% | 1.5 min | 0.4% |
| ORD–BOS | Chicago to Boston | 503 | 77.3% | 9.6 min | 0.2% |
| ORD–MSP | Chicago to Minneapolis | 498 | 77.3% | 7.6 min | 0.2% |
| ORD–IAH | Chicago to Houston | 477 | 75.9% | 7.8 min | 0.4% |
| ORD–PHX | Chicago to Phoenix | 469 | 87.4% | -3.3 min | 0.2% |
| ORD–ATL | Chicago to Atlanta | 438 | 79.5% | 2.6 min | 0.0% |
| ORD–DTW | Chicago to Detroit | 429 | 76.0% | 6.2 min | 2.3% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left ORD on time in December 2024?
77.7% of 22,668 scheduled domestic departures left less than 15 minutes late, and 76.4% reached their destination on time. The national figures that month were 77.8% and 78.1%.
How does that compare with a year earlier?
In December 2023, 85.7% of 20,664 departures left on time and 0.2% were cancelled, against 77.7% and 0.6% in December 2024.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for ORD · methodology · corrections.