Airports › Chicago (ORD) › September 2024
Airport month · September 2024
Chicago O'Hare International in September 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 September 2024, reporting carriers scheduled 24,847 domestic departures from Chicago O'Hare International (ORD). 83.7% left less than 15 minutes late and 82.7% reached their destination on time; 0.3% were cancelled.
Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so ORD departures were 0.7 points below the national departure figure.
A year earlier, in September 2023, the airport had 22,384 departures with 79.8% leaving on time: a change of +3.9 points, with flights up 11%.
Flights arriving at ORD that month were on time 84.1% of the time (24,839 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 42%, air carrier 39% and national aviation system 18%.
- On time 82.7%
- Arrived 15+ minutes late 16.9%
- Cancelled 0.3%
- Diverted 0.1%
September 2024 against a year earlier, the airport's year and the nation
| Measure | Sep 2024 | Sep 2023 | ORD, 12 months to Jul 2026 | All reported flights, Sep 2024 |
|---|---|---|---|---|
| Departed on time | 83.7% | 79.8% | 71.4% | 84.4% |
| Arrived on time | 82.7% | 77.1% | 69.4% | 83.9% |
| Cancelled | 0.3% | 0.6% | 2.8% | 0.6% |
| Average departure delay (late minutes only) | 10.9 min | 15.1 min | 22.3 min | 10.6 min |
| Scheduled departures a day | 828 | 746 | 986 | 19,421 |
| Scheduled departures | 24,847 | 22,384 | 359,911 | 582,622 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 8,155 | 33% | 84.9% | -1.4 min | 0.3% |
| AA American Airlines | 4,894 | 20% | 81.1% | 4.3 min | 0.2% |
| OO SkyWest Airlines | 4,647 | 19% | 78.5% | 6.8 min | 0.4% |
| MQ Envoy Air | 3,095 | 12% | 82.0% | 1.1 min | 0.3% |
| YX Republic Airline | 1,177 | 5% | 91.8% | -9.4 min | 0.0% |
| DL Delta Air Lines | 1,045 | 4% | 87.4% | -3.2 min | 0.1% |
| NK Spirit Airlines | 696 | 3% | 81.6% | 1.5 min | 0.6% |
| WN Southwest Airlines | 409 | 2% | 91.2% | -6.0 min | 0.0% |
| F9 Frontier Airlines | 323 | 1% | 62.8% | 16.0 min | 0.9% |
| AS Alaska Airlines | 291 | 1% | 81.4% | -3.5 min | 0.0% |
| B6 JetBlue Airways | 115 | 0% | 84.3% | 2.1 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| ORD–LGA | Chicago to New York | 931 | 87.5% | -2.0 min | 0.0% |
| ORD–DFW | Chicago to Dallas/Fort Worth | 625 | 79.5% | 4.5 min | 0.0% |
| ORD–BOS | Chicago to Boston | 624 | 80.0% | 4.1 min | 0.0% |
| ORD–DEN | Chicago to Denver | 562 | 85.9% | -2.7 min | 0.2% |
| ORD–LAX | Chicago to Los Angeles | 550 | 85.8% | -2.1 min | 0.4% |
| ORD–EWR | Chicago to Newark | 548 | 82.7% | 2.8 min | 0.2% |
| ORD–MSP | Chicago to Minneapolis | 534 | 77.5% | 1.0 min | 0.0% |
| ORD–DCA | Chicago to Washington | 524 | 81.7% | 4.4 min | 0.0% |
| ORD–DTW | Chicago to Detroit | 517 | 87.8% | -1.8 min | 0.0% |
| ORD–ATL | Chicago to Atlanta | 496 | 79.2% | 6.0 min | 0.6% |
| ORD–SEA | Chicago to Seattle | 485 | 83.7% | -3.3 min | 0.2% |
| ORD–PHX | Chicago to Phoenix | 472 | 87.5% | 2.8 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left ORD on time in September 2024?
83.7% of 24,847 scheduled domestic departures left less than 15 minutes late, and 82.7% reached their destination on time. The national figures that month were 84.4% and 83.9%.
How does that compare with a year earlier?
In September 2023, 79.8% of 22,384 departures left on time and 0.6% were cancelled, against 83.7% and 0.3% in September 2024.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 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.