Houston (IAH) flight delays
Departures · 18 routes · 5,916 flights · April 2026 · source: US BTS
Departures from Houston (IAH) run late
20%of the time, by +69 min on average when they do.
This is the historical record, not today's status — for live departures, check the airport's own board.
On-time rate
80%
Delayed 3h+
1.2%
Cancelled
0.8%
Avg when late
+69m
Best & worst routes from Houston (IAH)
Busiest routes from Houston (IAH)
Houston, TX → Chicago, ILdelayed 27%
Houston, TX → Dallas/Fort Worth, TXdelayed 25%
Houston, TX → Atlanta, GAdelayed 21%
Houston, TX → Los Angeles, CAdelayed 18%
Houston, TX → New York, NYdelayed 21%
Houston, TX → Denver, COdelayed 12%
Houston, TX → Orlando, FLdelayed 13%
Houston, TX → Miami, FLdelayed 20%
Houston, TX → San Francisco, CAdelayed 26%
Houston, TX → Newark, NJdelayed 17%
Houston, TX → Las Vegas, NVdelayed 22%
Houston, TX → Washington, DCdelayed 20%
Frequently asked
How often are flights from Houston (IAH) delayed?
About 20% of departures from Houston (IAH) arrive late (15+ minutes), across 18 routes and 5,916 flights in April 2026, based on public US BTS data.
Which route from Houston (IAH) is most delayed?
Houston, TX → Chicago, IL is the least punctual departure (delayed 27%), while Houston, TX → Denver, CO is the most on-time (12%).
Delay figures are historical, from public US BTSpunctuality data — not a forecast for any given flight, and not a live status board. “%” is the share of departures arriving 15+ minutes late.