Delta Air Lines departures from Houston, TX (IAH)

Among 8,369 scheduled Delta Air Lines flights departing IAH, 79.1% arrived on time, 12.1% arrived at least 30 minutes late, and 1.8% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Origin and marketing-carrier cohort · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable

79.1%arrived on time

12.1%30+ min late

1.8%cancelled

8,369scheduled flights

Based on July 2025–June 2026; on time means arrival less than 15 minutes late.

30+ minutes late12.1%

60+ minutes late7.1%

Cancelled1.8%

Diverted0.3%

What does the Delta Air Lines IAH sample show?

Delta Air Lines completed 97.9% of its scheduled departures from IAH; 7.1% arrived at least one hour late and 0.3% were diverted.

What were Delta Air Lines at IAH disruption rates?

For Delta Air Lines departures from IAH, 12.1% arrived at least 30 minutes late, 1.8% were cancelled, and 0.3% were diverted.

Compare all airlines at IAH

How large was the Delta Air Lines cohort at IAH?

The Delta Air Lines cohort at IAH contained 8,369 scheduled flights, including 8,194 completed flights, 149 cancellations, and 26 diversions.