Airports › Houston (IAH) › March 2024
Airport month · March 2024
George Bush Intercontinental/Houston in March 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 March 2024, reporting carriers scheduled 9,557 domestic departures from George Bush Intercontinental/Houston (IAH). 76.2% left less than 15 minutes late and 76.8% reached their destination on time; 0.6% were cancelled.
Nationally that month, 78.5% of flights departed on time and 78.3% arrived on time, so IAH departures were 2.3 points below the national departure figure.
Flights arriving at IAH that month were on time 79.4% of the time (9,557 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, air carrier 30% and national aviation system 22%.
- On time 76.8%
- Arrived 15+ minutes late 22.2%
- Cancelled 0.6%
- Diverted 0.3%
March 2024 against a year earlier, the airport's year and the nation
| Measure | Mar 2024 | Year earlier | IAH, 12 months to Jul 2026 | All reported flights, Mar 2024 |
|---|---|---|---|---|
| Departed on time | 76.2% | — | 78.1% | 78.5% |
| Arrived on time | 76.8% | — | 77.6% | 78.3% |
| Cancelled | 0.6% | — | 1.1% | 0.9% |
| Average departure delay (late minutes only) | 18.8 min | — | 17.2 min | 15.7 min |
| Scheduled departures a day | 319 | — | 326 | 19,726 |
| Scheduled departures | 9,557 | — | 119,020 | 591,767 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 5,829 | 61% | 76.0% | 10.1 min | 0.4% |
| OO SkyWest Airlines | 896 | 9% | 80.6% | 6.8 min | 1.6% |
| NK Spirit Airlines | 719 | 8% | 73.0% | 10.6 min | 1.0% |
| DL Delta Air Lines | 691 | 7% | 85.5% | -2.3 min | 0.1% |
| AA American Airlines | 512 | 5% | 75.6% | 21.3 min | 1.8% |
| WN Southwest Airlines | 411 | 4% | 82.0% | 4.7 min | 0.7% |
| MQ Envoy Air | 206 | 2% | 72.8% | 7.6 min | 1.0% |
| F9 Frontier Airlines | 169 | 2% | 68.6% | 27.6 min | 2.4% |
| AS Alaska Airlines | 62 | 1% | 80.6% | 2.6 min | 0.0% |
| B6 JetBlue Airways | 62 | 1% | 59.7% | 41.2 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| IAH–DEN | Houston to Denver | 453 | 81.7% | 5.3 min | 1.5% |
| IAH–LAX | Houston to Los Angeles | 425 | 76.7% | 5.6 min | 0.0% |
| IAH–DFW | Houston to Dallas/Fort Worth | 419 | 70.9% | 18.0 min | 1.0% |
| IAH–ATL | Houston to Atlanta | 375 | 82.4% | 5.1 min | 0.0% |
| IAH–LAS | Houston to Las Vegas | 375 | 75.5% | 12.0 min | 0.0% |
| IAH–ORD | Houston to Chicago | 371 | 77.4% | 8.6 min | 0.0% |
| IAH–MCO | Houston to Orlando | 369 | 72.1% | 22.0 min | 0.5% |
| IAH–LGA | Houston to New York | 294 | 79.9% | 3.0 min | 0.0% |
| IAH–MIA | Houston to Miami | 288 | 63.9% | 21.3 min | 3.1% |
| IAH–EWR | Houston to Newark | 282 | 85.5% | -2.0 min | 0.0% |
| IAH–FLL | Houston to Fort Lauderdale | 254 | 69.3% | 16.2 min | 1.2% |
| IAH–MSY | Houston to New Orleans | 252 | 77.4% | 8.9 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left IAH on time in March 2024?
76.2% of 9,557 scheduled domestic departures left less than 15 minutes late, and 76.8% reached their destination on time. The national figures that month were 78.5% and 78.3%.
How does that compare with a year earlier?
March 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 March 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.