Airports › Chicago (ORD) › December 2023
Airport month · December 2023
Chicago O'Hare International in December 2023
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 2023, reporting carriers scheduled 20,664 domestic departures from Chicago O'Hare International (ORD). 85.7% left less than 15 minutes late and 83.8% reached their destination on time; 0.2% were cancelled.
Nationally that month, 83.1% of flights departed on time and 83.8% arrived on time, so ORD departures were 2.6 points above the national departure figure.
Flights arriving at ORD that month were on time 86.4% of the time (20,661 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 36%, late-arriving aircraft 34% and national aviation system 24%.
- On time 83.8%
- Arrived 15+ minutes late 15.7%
- Cancelled 0.2%
- Diverted 0.3%
December 2023 against a year earlier, the airport's year and the nation
| Measure | Dec 2023 | Year earlier | ORD, 12 months to Jul 2026 | All reported flights, Dec 2023 |
|---|---|---|---|---|
| Departed on time | 85.7% | — | 71.4% | 83.1% |
| Arrived on time | 83.8% | — | 69.4% | 83.8% |
| Cancelled | 0.2% | — | 2.8% | 0.4% |
| Average departure delay (late minutes only) | 10.2 min | — | 22.3 min | 11.6 min |
| Scheduled departures a day | 689 | — | 986 | 19,013 |
| Scheduled departures | 20,664 | — | 359,911 | 570,394 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 6,697 | 32% | 86.2% | -3.5 min | 0.1% |
| OO SkyWest Airlines | 4,108 | 20% | 81.0% | 4.1 min | 0.5% |
| AA American Airlines | 3,656 | 18% | 82.8% | 2.2 min | 0.0% |
| MQ Envoy Air | 2,075 | 10% | 82.3% | -0.6 min | 0.2% |
| YX Republic Airline | 1,399 | 7% | 91.2% | -6.7 min | 0.1% |
| WN Southwest Airlines | 866 | 4% | 78.2% | 3.1 min | 0.5% |
| DL Delta Air Lines | 760 | 4% | 88.7% | -3.9 min | 0.0% |
| NK Spirit Airlines | 698 | 3% | 76.6% | 4.1 min | 0.1% |
| AS Alaska Airlines | 212 | 1% | 84.0% | -8.6 min | 0.5% |
| B6 JetBlue Airways | 99 | 0% | 75.8% | 10.1 min | 0.0% |
| F9 Frontier Airlines | 81 | 0% | 76.5% | 11.3 min | 0.0% |
| 9E Endeavor Air | 13 | 0% | 92.3% | 7.2 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| ORD–LGA | Chicago to New York | 724 | 81.4% | 2.4 min | 0.6% |
| ORD–LAX | Chicago to Los Angeles | 532 | 85.2% | -4.8 min | 0.6% |
| ORD–PHX | Chicago to Phoenix | 530 | 88.3% | -8.1 min | 0.0% |
| ORD–DEN | Chicago to Denver | 511 | 91.6% | -8.5 min | 0.2% |
| ORD–DFW | Chicago to Dallas/Fort Worth | 501 | 89.2% | -3.0 min | 0.0% |
| ORD–DCA | Chicago to Washington | 493 | 84.6% | 4.9 min | 0.0% |
| ORD–MCO | Chicago to Orlando | 463 | 76.9% | 6.0 min | 0.0% |
| ORD–BOS | Chicago to Boston | 462 | 81.0% | 2.8 min | 0.6% |
| ORD–ATL | Chicago to Atlanta | 448 | 85.5% | 0.6 min | 0.0% |
| ORD–EWR | Chicago to Newark | 445 | 84.3% | -3.9 min | 0.4% |
| ORD–MIA | Chicago to Miami | 439 | 72.9% | 6.8 min | 0.0% |
| ORD–DTW | Chicago to Detroit | 399 | 85.2% | 5.4 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left ORD on time in December 2023?
85.7% of 20,664 scheduled domestic departures left less than 15 minutes late, and 83.8% reached their destination on time. The national figures that month were 83.1% and 83.8%.
How does that compare with a year earlier?
December 2022 is outside the 36 months on file, or the airport had too few reported flights that month.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2023; 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.