Airports › Houston (IAH) › June 2025
Airport month · June 2025
George Bush Intercontinental/Houston in June 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 June 2025, reporting carriers scheduled 10,009 domestic departures from George Bush Intercontinental/Houston (IAH). 64.2% left less than 15 minutes late and 63.3% reached their destination on time; 2.3% were cancelled.
Nationally that month, 71.4% of flights departed on time and 70.3% arrived on time, so IAH departures were 7.2 points below the national departure figure.
A year earlier, in June 2024, the airport had 10,028 departures with 67.8% leaving on time: a change of −3.6 points, with flights down 0%.
Flights arriving at IAH that month were on time 66.7% of the time (10,001 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 42%, air carrier 27% and national aviation system 16%.
- On time 63.3%
- Arrived 15+ minutes late 33.8%
- Cancelled 2.3%
- Diverted 0.6%
June 2025 against a year earlier, the airport's year and the nation
| Measure | Jun 2025 | Jun 2024 | IAH, 12 months to Jul 2026 | All reported flights, Jun 2025 |
|---|---|---|---|---|
| Departed on time | 64.2% | 67.8% | 78.1% | 71.4% |
| Arrived on time | 63.3% | 66.7% | 77.6% | 70.3% |
| Cancelled | 2.3% | 1.3% | 1.1% | 1.6% |
| Average departure delay (late minutes only) | 32.9 min | 26.6 min | 17.2 min | 22.1 min |
| Scheduled departures a day | 334 | 334 | 326 | 20,386 |
| Scheduled departures | 10,009 | 10,028 | 119,020 | 611,575 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 5,971 | 60% | 63.9% | 23.2 min | 1.8% |
| OO SkyWest Airlines | 1,364 | 14% | 59.3% | 35.0 min | 3.9% |
| DL Delta Air Lines | 689 | 7% | 67.9% | 23.7 min | 2.0% |
| AA American Airlines | 657 | 7% | 67.9% | 36.1 min | 2.7% |
| NK Spirit Airlines | 646 | 6% | 66.9% | 17.0 min | 2.5% |
| F9 Frontier Airlines | 323 | 3% | 47.4% | 51.7 min | 3.1% |
| MQ Envoy Air | 168 | 2% | 60.7% | 29.8 min | 5.4% |
| AS Alaska Airlines | 120 | 1% | 64.2% | 22.0 min | 3.3% |
| B6 JetBlue Airways | 61 | 1% | 45.9% | 39.6 min | 3.3% |
| YX Republic Airline | 8 | 0% | 75.0% | 12.1 min | 0.0% |
| OH PSA Airlines | 2 | 0% | 50.0% | -24.0 min | 50.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| IAH–ORD | Houston to Chicago | 508 | 66.3% | 20.6 min | 1.8% |
| IAH–DFW | Houston to Dallas/Fort Worth | 458 | 58.5% | 38.1 min | 4.4% |
| IAH–LAX | Houston to Los Angeles | 431 | 70.5% | 17.8 min | 1.6% |
| IAH–ATL | Houston to Atlanta | 390 | 61.0% | 32.9 min | 3.1% |
| IAH–DEN | Houston to Denver | 390 | 69.2% | 18.2 min | 1.0% |
| IAH–LGA | Houston to New York | 361 | 57.3% | 28.3 min | 2.2% |
| IAH–MIA | Houston to Miami | 305 | 70.8% | 14.7 min | 2.3% |
| IAH–MCO | Houston to Orlando | 297 | 62.0% | 30.0 min | 1.3% |
| IAH–SFO | Houston to San Francisco | 295 | 63.1% | 24.3 min | 1.0% |
| IAH–LAS | Houston to Las Vegas | 289 | 67.5% | 21.9 min | 1.4% |
| IAH–EWR | Houston to Newark | 264 | 63.6% | 27.1 min | 0.0% |
| IAH–MSY | Houston to New Orleans | 241 | 63.5% | 22.1 min | 2.9% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left IAH on time in June 2025?
64.2% of 10,009 scheduled domestic departures left less than 15 minutes late, and 63.3% reached their destination on time. The national figures that month were 71.4% and 70.3%.
How does that compare with a year earlier?
In June 2024, 67.8% of 10,028 departures left on time and 1.3% were cancelled, against 64.2% and 2.3% in June 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for June 2025; 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.