Airports › Chicago (ORD) › October 2025
Airport month · October 2025
Chicago O'Hare International in October 2025
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 October 2025, reporting carriers scheduled 31,096 domestic departures from Chicago O'Hare International (ORD). 76.6% left less than 15 minutes late and 74.3% reached their destination on time; 0.2% were cancelled.
Nationally that month, 80.0% of flights departed on time and 79.1% arrived on time, so ORD departures were 3.4 points below the national departure figure.
A year earlier, in October 2024, the airport had 25,211 departures with 85.6% leaving on time: a change of −9.0 points, with flights up 23%.
Flights arriving at ORD that month were on time 73.8% of the time (31,083 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 38%, air carrier 36% and national aviation system 22%.
- On time 74.3%
- Arrived 15+ minutes late 25.2%
- Cancelled 0.2%
- Diverted 0.2%
October 2025 against a year earlier, the airport's year and the nation
| Measure | Oct 2025 | Oct 2024 | ORD, 12 months to Jul 2026 | All reported flights, Oct 2025 |
|---|---|---|---|---|
| Departed on time | 76.6% | 85.6% | 71.4% | 80.0% |
| Arrived on time | 74.3% | 85.9% | 69.4% | 79.1% |
| Cancelled | 0.2% | 0.4% | 2.8% | 0.5% |
| Average departure delay (late minutes only) | 16.9 min | 9.2 min | 22.3 min | 13.9 min |
| Scheduled departures a day | 1,037 | 840 | 986 | 20,195 |
| Scheduled departures | 31,096 | 25,211 | 359,911 | 605,844 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 9,150 | 29% | 75.8% | 7.4 min | 0.2% |
| OO SkyWest Airlines | 6,567 | 21% | 70.7% | 15.4 min | 0.0% |
| AA American Airlines | 5,626 | 18% | 70.4% | 16.4 min | 0.4% |
| MQ Envoy Air | 4,712 | 15% | 78.9% | 3.8 min | 0.1% |
| YX Republic Airline | 2,004 | 6% | 82.5% | 0.9 min | 0.1% |
| DL Delta Air Lines | 1,077 | 3% | 72.6% | 12.5 min | 0.8% |
| WN Southwest Airlines | 422 | 1% | 79.9% | 1.8 min | 0.0% |
| NK Spirit Airlines | 405 | 1% | 79.5% | 2.7 min | 1.0% |
| F9 Frontier Airlines | 387 | 1% | 70.8% | 26.3 min | 0.3% |
| OH PSA Airlines | 352 | 1% | 64.2% | 40.9 min | 0.6% |
| AS Alaska Airlines | 292 | 1% | 63.4% | 8.9 min | 2.4% |
| B6 JetBlue Airways | 102 | 0% | 75.5% | 18.3 min | 2.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| ORD–LGA | Chicago to New York | 1,025 | 62.0% | 23.2 min | 2.0% |
| ORD–BOS | Chicago to Boston | 695 | 57.0% | 28.7 min | 0.9% |
| ORD–DEN | Chicago to Denver | 616 | 78.4% | 9.3 min | 0.2% |
| ORD–DFW | Chicago to Dallas/Fort Worth | 607 | 74.1% | 14.2 min | 0.3% |
| ORD–DCA | Chicago to Washington | 595 | 74.5% | 9.7 min | 0.7% |
| ORD–MSP | Chicago to Minneapolis | 574 | 76.7% | 11.8 min | 0.0% |
| ORD–ATL | Chicago to Atlanta | 569 | 78.0% | 3.6 min | 0.0% |
| ORD–LAX | Chicago to Los Angeles | 565 | 72.6% | 8.4 min | 0.0% |
| ORD–MCO | Chicago to Orlando | 535 | 79.1% | 5.0 min | 0.7% |
| ORD–SFO | Chicago to San Francisco | 522 | 70.5% | 13.0 min | 0.4% |
| ORD–DTW | Chicago to Detroit | 520 | 74.4% | 11.2 min | 0.0% |
| ORD–IAH | Chicago to Houston | 518 | 78.4% | 2.6 min | 0.2% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left ORD on time in October 2025?
76.6% of 31,096 scheduled domestic departures left less than 15 minutes late, and 74.3% reached their destination on time. The national figures that month were 80.0% and 79.1%.
How does that compare with a year earlier?
In October 2024, 85.6% of 25,211 departures left on time and 0.4% were cancelled, against 76.6% and 0.2% in October 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for October 2025; 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.