Airports › Chicago (ORD) › May 2024
Airport month · May 2024
Chicago O'Hare International in May 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 May 2024, reporting carriers scheduled 24,845 domestic departures from Chicago O'Hare International (ORD). 68.2% left less than 15 minutes late and 64.6% reached their destination on time; 1.7% were cancelled.
Nationally that month, 73.4% of flights departed on time and 72.3% arrived on time, so ORD departures were 5.2 points below the national departure figure.
Flights arriving at ORD that month were on time 69.7% of the time (24,846 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 28% and national aviation system 21%.
- On time 64.6%
- Arrived 15+ minutes late 33.4%
- Cancelled 1.7%
- Diverted 0.4%
May 2024 against a year earlier, the airport's year and the nation
| Measure | May 2024 | Year earlier | ORD, 12 months to Jul 2026 | All reported flights, May 2024 |
|---|---|---|---|---|
| Departed on time | 68.2% | — | 71.4% | 73.4% |
| Arrived on time | 64.6% | — | 69.4% | 72.3% |
| Cancelled | 1.7% | — | 2.8% | 1.4% |
| Average departure delay (late minutes only) | 29.7 min | — | 22.3 min | 20.8 min |
| Scheduled departures a day | 828 | — | 986 | 20,325 |
| Scheduled departures | 24,845 | — | 359,911 | 609,743 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 7,656 | 31% | 67.2% | 18.9 min | 1.0% |
| OO SkyWest Airlines | 5,073 | 20% | 64.1% | 31.5 min | 3.1% |
| AA American Airlines | 4,488 | 18% | 57.0% | 38.5 min | 2.0% |
| MQ Envoy Air | 3,051 | 12% | 62.9% | 21.8 min | 1.4% |
| YX Republic Airline | 1,325 | 5% | 78.9% | 7.7 min | 1.3% |
| DL Delta Air Lines | 1,059 | 4% | 70.4% | 26.4 min | 0.2% |
| WN Southwest Airlines | 769 | 3% | 68.5% | 19.6 min | 0.9% |
| NK Spirit Airlines | 750 | 3% | 59.7% | 26.6 min | 1.7% |
| AS Alaska Airlines | 326 | 1% | 63.2% | 16.5 min | 0.0% |
| F9 Frontier Airlines | 224 | 1% | 48.2% | 55.3 min | 3.6% |
| B6 JetBlue Airways | 124 | 0% | 73.4% | 16.2 min | 1.6% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| ORD–LGA | Chicago to New York | 987 | 66.4% | 23.8 min | 2.0% |
| ORD–BOS | Chicago to Boston | 623 | 66.9% | 24.8 min | 0.8% |
| ORD–LAX | Chicago to Los Angeles | 589 | 61.8% | 29.8 min | 0.8% |
| ORD–DEN | Chicago to Denver | 584 | 62.5% | 30.0 min | 1.2% |
| ORD–PHX | Chicago to Phoenix | 575 | 68.7% | 26.5 min | 0.5% |
| ORD–MSP | Chicago to Minneapolis | 547 | 67.6% | 25.8 min | 0.7% |
| ORD–DFW | Chicago to Dallas/Fort Worth | 522 | 49.2% | 38.4 min | 4.6% |
| ORD–EWR | Chicago to Newark | 515 | 66.8% | 19.5 min | 1.9% |
| ORD–LAS | Chicago to Las Vegas | 515 | 63.7% | 20.6 min | 1.7% |
| ORD–DCA | Chicago to Washington | 500 | 57.0% | 30.2 min | 1.8% |
| ORD–ATL | Chicago to Atlanta | 490 | 61.8% | 31.3 min | 1.2% |
| ORD–IAH | Chicago to Houston | 490 | 58.6% | 27.8 min | 1.2% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left ORD on time in May 2024?
68.2% of 24,845 scheduled domestic departures left less than 15 minutes late, and 64.6% reached their destination on time. The national figures that month were 73.4% and 72.3%.
How does that compare with a year earlier?
May 2023 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 May 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.