Alaska Airlines departures from Seattle, WA (SEA)

Among 76,697 scheduled Alaska Airlines flights departing SEA, 76.1% arrived on time, 12.7% arrived at least 30 minutes late, and 1.0% 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

76.1%arrived on time

12.7%30+ min late

1.0%cancelled

76,697scheduled flights

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

30+ minutes late12.7%

60+ minutes late4.8%

Cancelled1.0%

Diverted0.3%

What does the Alaska Airlines SEA sample show?

Alaska Airlines completed 98.6% of its scheduled departures from SEA; 4.8% arrived at least one hour late and 0.3% were diverted.

What were Alaska Airlines at SEA disruption rates?

For Alaska Airlines departures from SEA, 12.7% arrived at least 30 minutes late, 1.0% were cancelled, and 0.3% were diverted.

Compare all airlines at SEA

How large was the Alaska Airlines cohort at SEA?

The Alaska Airlines cohort at SEA contained 76,697 scheduled flights, including 75,639 completed flights, 804 cancellations, and 254 diversions.