Airports › Chicago (ORD) › August 2024
Airport month · August 2024
Chicago O'Hare International in August 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 August 2024, reporting carriers scheduled 25,500 domestic departures from Chicago O'Hare International (ORD). 70.1% left less than 15 minutes late and 68.1% reached their destination on time; 1.4% were cancelled.
Nationally that month, 75.4% of flights departed on time and 74.7% arrived on time, so ORD departures were 5.3 points below the national departure figure.
A year earlier, in August 2023, the airport had 23,347 departures with 77.1% leaving on time: a change of −7.0 points, with flights up 9%.
Flights arriving at ORD that month were on time 71.5% of the time (25,483 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 43%, air carrier 30% and national aviation system 22%.
- On time 68.1%
- Arrived 15+ minutes late 30.2%
- Cancelled 1.4%
- Diverted 0.4%
August 2024 against a year earlier, the airport's year and the nation
| Measure | Aug 2024 | Aug 2023 | ORD, 12 months to Jul 2026 | All reported flights, Aug 2024 |
|---|---|---|---|---|
| Departed on time | 70.1% | 77.1% | 71.4% | 75.4% |
| Arrived on time | 68.1% | 75.3% | 69.4% | 74.7% |
| Cancelled | 1.4% | 1.3% | 2.8% | 2.1% |
| Average departure delay (late minutes only) | 23.0 min | 17.3 min | 22.3 min | 18.4 min |
| Scheduled departures a day | 850 | 778 | 986 | 20,634 |
| Scheduled departures | 25,500 | 23,347 | 359,911 | 619,025 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 8,190 | 32% | 69.3% | 14.9 min | 1.5% |
| AA American Airlines | 5,058 | 20% | 63.9% | 22.1 min | 2.4% |
| OO SkyWest Airlines | 4,582 | 18% | 67.5% | 18.8 min | 0.6% |
| MQ Envoy Air | 3,383 | 13% | 71.4% | 11.0 min | 0.4% |
| DL Delta Air Lines | 1,090 | 4% | 73.2% | 16.1 min | 1.5% |
| YX Republic Airline | 1,048 | 4% | 77.1% | 7.5 min | 1.5% |
| NK Spirit Airlines | 933 | 4% | 58.7% | 25.6 min | 2.7% |
| WN Southwest Airlines | 434 | 2% | 78.8% | 4.0 min | 0.0% |
| AS Alaska Airlines | 354 | 1% | 66.4% | 16.3 min | 0.3% |
| F9 Frontier Airlines | 310 | 1% | 47.7% | 40.2 min | 3.2% |
| B6 JetBlue Airways | 118 | 0% | 52.5% | 35.5 min | 5.1% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| ORD–LGA | Chicago to New York | 967 | 62.6% | 22.6 min | 5.6% |
| ORD–BOS | Chicago to Boston | 703 | 65.6% | 21.7 min | 2.1% |
| ORD–LAX | Chicago to Los Angeles | 611 | 69.4% | 17.1 min | 1.5% |
| ORD–DFW | Chicago to Dallas/Fort Worth | 594 | 69.7% | 16.3 min | 1.3% |
| ORD–DEN | Chicago to Denver | 582 | 70.4% | 12.0 min | 1.0% |
| ORD–MSP | Chicago to Minneapolis | 573 | 55.8% | 24.6 min | 0.7% |
| ORD–SEA | Chicago to Seattle | 552 | 68.1% | 13.2 min | 0.2% |
| ORD–DCA | Chicago to Washington | 548 | 59.1% | 30.0 min | 3.1% |
| ORD–EWR | Chicago to Newark | 547 | 61.8% | 22.1 min | 5.9% |
| ORD–DTW | Chicago to Detroit | 533 | 73.4% | 15.0 min | 0.6% |
| ORD–ATL | Chicago to Atlanta | 511 | 67.3% | 22.8 min | 2.0% |
| ORD–IAH | Chicago to Houston | 502 | 74.1% | 7.3 min | 0.8% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left ORD on time in August 2024?
70.1% of 25,500 scheduled domestic departures left less than 15 minutes late, and 68.1% reached their destination on time. The national figures that month were 75.4% and 74.7%.
How does that compare with a year earlier?
In August 2023, 77.1% of 23,347 departures left on time and 1.3% were cancelled, against 70.1% and 1.4% in August 2024.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 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.