Houston (IAH) Delays in 2025
76.9% on-time departures, 79.1% on-time arrivals in 2025
117,259Flights
76.9%Departures on-time
19.4 minAvg dep. delay
79.1%Arrivals on-time
16.8 minAvg arr. delay
1.3%Cancelled
Delay causes
- Air carrier32.8%
- Extreme weather8.6%
- National Aviation System21.8%
- Security0%
- Late-arriving aircraft36.7%
← 2024 · Houston (IAH) overview
On-time = arrival within 15 minutes of schedule, per U.S. DOT definitions. Source: Bureau of Transportation Statistics (public domain). Delay-cause attribution is reported by carriers since June 2003.