Airports › Houston (IAH) › September 2024
Airport month · September 2024
George Bush Intercontinental/Houston 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 9,502 domestic departures from George Bush Intercontinental/Houston (IAH). 82.8% left less than 15 minutes late and 83.3% reached their destination on time; 0.6% were cancelled.
Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so IAH departures were 1.6 points below the national departure figure.
A year earlier, in September 2023, the airport had 9,283 departures with 79.6% leaving on time: a change of +3.2 points, with flights up 2%.
Flights arriving at IAH that month were on time 85.4% of the time (9,511 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, air carrier 34% and national aviation system 17%.
- On time 83.3%
- Arrived 15+ minutes late 15.9%
- Cancelled 0.6%
- Diverted 0.2%
September 2024 against a year earlier, the airport's year and the nation
| Measure | Sep 2024 | Sep 2023 | IAH, 12 months to Jul 2026 | All reported flights, Sep 2024 |
|---|---|---|---|---|
| Departed on time | 82.8% | 79.6% | 78.1% | 84.4% |
| Arrived on time | 83.3% | 78.9% | 77.6% | 83.9% |
| Cancelled | 0.6% | 0.6% | 1.1% | 0.6% |
| Average departure delay (late minutes only) | 11.3 min | 15.2 min | 17.2 min | 10.6 min |
| Scheduled departures a day | 317 | 309 | 326 | 19,421 |
| Scheduled departures | 9,502 | 9,283 | 119,020 | 582,622 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 5,712 | 60% | 83.7% | 0.5 min | 0.5% |
| OO SkyWest Airlines | 983 | 10% | 81.4% | 7.0 min | 0.3% |
| NK Spirit Airlines | 913 | 10% | 86.6% | -5.2 min | 1.1% |
| DL Delta Air Lines | 667 | 7% | 89.8% | -5.5 min | 0.0% |
| AA American Airlines | 635 | 7% | 85.2% | -1.2 min | 0.5% |
| F9 Frontier Airlines | 367 | 4% | 59.4% | 22.6 min | 1.9% |
| AS Alaska Airlines | 85 | 1% | 89.4% | -6.4 min | 0.0% |
| MQ Envoy Air | 76 | 1% | 86.8% | -8.5 min | 0.0% |
| B6 JetBlue Airways | 60 | 1% | 61.7% | 18.1 min | 3.3% |
| YX Republic Airline | 4 | 0% | 100.0% | -19.5 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| IAH–DFW | Houston to Dallas/Fort Worth | 478 | 79.5% | 1.4 min | 0.0% |
| IAH–ORD | Houston to Chicago | 473 | 87.1% | -1.8 min | 0.2% |
| IAH–LAX | Houston to Los Angeles | 463 | 90.9% | -4.5 min | 0.0% |
| IAH–DEN | Houston to Denver | 390 | 85.1% | -3.6 min | 0.3% |
| IAH–ATL | Houston to Atlanta | 381 | 79.0% | 6.1 min | 1.8% |
| IAH–LGA | Houston to New York | 338 | 88.5% | -7.6 min | 0.0% |
| IAH–EWR | Houston to Newark | 330 | 83.9% | -2.5 min | 0.3% |
| IAH–LAS | Houston to Las Vegas | 327 | 79.2% | 7.1 min | 0.3% |
| IAH–MCO | Houston to Orlando | 288 | 85.4% | -2.6 min | 0.7% |
| IAH–MSY | Houston to New Orleans | 272 | 80.1% | 2.5 min | 5.1% |
| IAH–SFO | Houston to San Francisco | 270 | 87.0% | -3.3 min | 0.0% |
| IAH–MIA | Houston to Miami | 253 | 83.0% | -3.6 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left IAH on time in September 2024?
82.8% of 9,502 scheduled domestic departures left less than 15 minutes late, and 83.3% 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, 79.6% of 9,283 departures left on time and 0.6% were cancelled, against 82.8% and 0.6% 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 IAH · methodology · corrections.