Delta Air Lines departures from Washington, DC (IAD)

Among 3,063 scheduled Delta Air Lines flights departing IAD, 78.6% arrived on time, 12.5% arrived at least 30 minutes late, and 2.4% 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

78.6%arrived on time

12.5%30+ min late

2.4%cancelled

3,063scheduled flights

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

30+ minutes late12.5%

60+ minutes late7.2%

Cancelled2.4%

Diverted0.4%

What does the Delta Air Lines IAD sample show?

Delta Air Lines completed 97.2% of its scheduled departures from IAD; 7.2% arrived at least one hour late and 0.4% were diverted.

What were Delta Air Lines at IAD disruption rates?

For Delta Air Lines departures from IAD, 12.5% arrived at least 30 minutes late, 2.4% were cancelled, and 0.4% were diverted.

Compare all airlines at IAD

How large was the Delta Air Lines cohort at IAD?

The Delta Air Lines cohort at IAD contained 3,063 scheduled flights, including 2,976 completed flights, 75 cancellations, and 12 diversions.