Airports › Chicago (ORD) › March 2025
Airport month · March 2025
Chicago O'Hare International in March 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 March 2025, reporting carriers scheduled 24,580 domestic departures from Chicago O'Hare International (ORD). 77.3% left less than 15 minutes late and 74.9% reached their destination on time; 1.0% were cancelled.
Nationally that month, 79.9% of flights departed on time and 79.3% arrived on time, so ORD departures were 2.6 points below the national departure figure.
A year earlier, in March 2024, the airport had 22,288 departures with 82.1% leaving on time: a change of −4.8 points, with flights up 10%.
Flights arriving at ORD that month were on time 77.5% of the time (24,581 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 30% and national aviation system 22%.
- On time 74.9%
- Arrived 15+ minutes late 23.8%
- Cancelled 1.0%
- Diverted 0.3%
March 2025 against a year earlier, the airport's year and the nation
| Measure | Mar 2025 | Mar 2024 | ORD, 12 months to Jul 2026 | All reported flights, Mar 2025 |
|---|---|---|---|---|
| Departed on time | 77.3% | 82.1% | 71.4% | 79.9% |
| Arrived on time | 74.9% | 80.7% | 69.4% | 79.3% |
| Cancelled | 1.0% | 0.4% | 2.8% | 1.2% |
| Average departure delay (late minutes only) | 17.5 min | 12.4 min | 22.3 min | 14.9 min |
| Scheduled departures a day | 819 | 743 | 986 | 20,029 |
| Scheduled departures | 24,580 | 22,288 | 359,911 | 600,872 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 7,923 | 32% | 78.6% | 4.3 min | 0.2% |
| OO SkyWest Airlines | 4,355 | 18% | 66.4% | 20.0 min | 1.4% |
| AA American Airlines | 3,941 | 16% | 73.0% | 12.0 min | 1.2% |
| MQ Envoy Air | 2,945 | 12% | 71.9% | 9.9 min | 2.1% |
| YX Republic Airline | 2,907 | 12% | 81.6% | 2.4 min | 1.1% |
| DL Delta Air Lines | 779 | 3% | 80.1% | 3.8 min | 0.4% |
| NK Spirit Airlines | 719 | 3% | 75.5% | 5.9 min | 1.1% |
| WN Southwest Airlines | 390 | 2% | 85.6% | -2.7 min | 0.3% |
| F9 Frontier Airlines | 349 | 1% | 64.2% | 17.3 min | 1.4% |
| AS Alaska Airlines | 187 | 1% | 72.2% | 9.2 min | 0.5% |
| B6 JetBlue Airways | 85 | 0% | 71.8% | 11.4 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| ORD–LGA | Chicago to New York | 962 | 72.7% | 14.1 min | 0.3% |
| ORD–BOS | Chicago to Boston | 570 | 76.1% | 7.9 min | 0.7% |
| ORD–LAX | Chicago to Los Angeles | 569 | 82.4% | -4.0 min | 0.0% |
| ORD–DCA | Chicago to Washington | 559 | 66.4% | 23.1 min | 0.9% |
| ORD–DFW | Chicago to Dallas/Fort Worth | 539 | 74.4% | 5.3 min | 1.5% |
| ORD–EWR | Chicago to Newark | 531 | 71.9% | 13.9 min | 0.8% |
| ORD–PHX | Chicago to Phoenix | 524 | 80.5% | -1.6 min | 0.6% |
| ORD–DEN | Chicago to Denver | 520 | 85.4% | 0.0 min | 0.0% |
| ORD–MSP | Chicago to Minneapolis | 513 | 77.8% | 6.4 min | 1.6% |
| ORD–DTW | Chicago to Detroit | 494 | 78.5% | 6.1 min | 0.4% |
| ORD–MCO | Chicago to Orlando | 481 | 77.1% | 10.1 min | 0.4% |
| ORD–ATL | Chicago to Atlanta | 476 | 76.5% | 6.2 min | 0.6% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left ORD on time in March 2025?
77.3% of 24,580 scheduled domestic departures left less than 15 minutes late, and 74.9% reached their destination on time. The national figures that month were 79.9% and 79.3%.
How does that compare with a year earlier?
In March 2024, 82.1% of 22,288 departures left on time and 0.4% were cancelled, against 77.3% and 1.0% in March 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for March 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.