Southwest Airlines departures from Washington, DC (IAD)

Among 1,100 scheduled Southwest Airlines flights departing IAD, 72.9% arrived on time, 14.5% arrived at least 30 minutes late, and 1.1% 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

72.9%arrived on time

14.5%30+ min late

1.1%cancelled

1,100scheduled flights

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

30+ minutes late14.5%

60+ minutes late6.4%

Cancelled1.1%

Diverted0.3%

What does the Southwest Airlines IAD sample show?

Southwest Airlines completed 98.6% of its scheduled departures from IAD; 6.4% arrived at least one hour late and 0.3% were diverted.

What were Southwest Airlines at IAD disruption rates?

For Southwest Airlines departures from IAD, 14.5% arrived at least 30 minutes late, 1.1% were cancelled, and 0.3% were diverted.

Compare all airlines at IAD

How large was the Southwest Airlines cohort at IAD?

The Southwest Airlines cohort at IAD contained 1,100 scheduled flights, including 1,085 completed flights, 12 cancellations, and 3 diversions.