BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
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AIRLINE × ROUTE REPORT
DEN→SEA

Alaska Airlines Denver, CO (DEN) to Seattle, WA (SEA) reliability

Among 1,558 scheduled Alaska Airlines flights from DEN to SEA, 73.0% arrived on time, 15.6% arrived at least 30 minutes late, and 1.0% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Marketing carrier: Alaska Airlines (AS) · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
73.0%arrived on time
15.6%30+ min late
1.0%cancelled
1,558scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late15.6%
60+ minutes late7.1%
Cancelled1.0%
Average arrival+8.4 mincompleted flights

What did Alaska Airlines DEN to SEA record?

Alaska Airlines completed 99.0% of its scheduled reportable DEN to SEA flights in the observation window. 73.0% of all scheduled flights arrived less than 15 minutes late, while 7.1% arrived at least an hour late.

What were Alaska Airlines DEN to SEA disruption rates?

For Alaska Airlines DEN-to-SEA flights, 15.6% arrived at least 30 minutes late, 1.0% were cancelled, and 0.0% were diverted.

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What was the Alaska Airlines DEN to SEA scheduled cohort?

The Alaska Airlines DEN-to-SEA cohort contained 1,558 scheduled flights; 1,543 completed, 15 were cancelled, and 0 were diverted.

Not a prediction.

This is a descriptive historical rate. Schedule changes, seasonal operations and current conditions may differ.