United Airlines departures from Seattle, WA (SEA)

Among 8,804 scheduled United Airlines flights departing SEA, 79.2% arrived on time, 13.4% arrived at least 30 minutes late, and 0.8% 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

79.2%arrived on time

13.4%30+ min late

0.8%cancelled

8,804scheduled flights

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

30+ minutes late13.4%

60+ minutes late7.5%

Cancelled0.8%

Diverted0.4%

What does the United Airlines SEA sample show?

United Airlines completed 98.8% of its scheduled departures from SEA; 7.5% arrived at least one hour late and 0.4% were diverted.

What were United Airlines at SEA disruption rates?

For United Airlines departures from SEA, 13.4% arrived at least 30 minutes late, 0.8% were cancelled, and 0.4% were diverted.

Compare all airlines at SEA

How large was the United Airlines cohort at SEA?

The United Airlines cohort at SEA contained 8,804 scheduled flights, including 8,696 completed flights, 70 cancellations, and 38 diversions.