STL → IAH: cancellations & delays
Over Jan 2023 - Apr 2026, 1.8% of St. Louis Lambert International Airport (STL) to George Bush Intercontinental Airport (IAH) flights were cancelled and 22.2% arrived at least 15 minutes late, across 1,997 flights, flown by UA, OO. Cancellations peak in January.
Check today's live STL departures →Airport pages: St. Louis Lambert International Airport (STL) · George Bush Intercontinental Airport (IAH)
Rates are historical averages from U.S. DOT (BTS) on-time records; a specific flight's live estimate can differ with weather and the day's disruptions.