GSP → IAH: cancellations & delays
Over Jan 2023 - Apr 2026, 1.5% of Greenville-Spartanburg International Airport (GSP) to George Bush Intercontinental Airport (IAH) flights were cancelled and 14.6% arrived at least 15 minutes late, across 843 flights, flown by UA, OO. Cancellations peak in July.
Check today's live GSP departures →Airport pages: Greenville-Spartanburg International Airport (GSP) · 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.