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

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

Among 1,903 scheduled United Airlines flights from DEN to SEA, 79.5% arrived on time, 12.1% arrived at least 30 minutes late, and 0.6% were cancelled during July 2025–June 2026.

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

HISTORICAL ROUTE SIGNALGenerally reliable
79.5%arrived on time
12.1%30+ min late
0.6%cancelled
1,903scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late12.1%
60+ minutes late6.0%
Cancelled0.6%
Average arrival+4.3 mincompleted flights

What did United Airlines DEN to SEA record?

United Airlines completed 99.4% of its scheduled reportable DEN to SEA flights in the observation window. 79.5% of all scheduled flights arrived less than 15 minutes late, while 6.0% arrived at least an hour late.

What were United Airlines DEN to SEA disruption rates?

For United Airlines DEN-to-SEA flights, 12.1% arrived at least 30 minutes late, 0.6% were cancelled, and 0.0% were diverted.

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What was the United Airlines DEN to SEA scheduled cohort?

The United Airlines DEN-to-SEA cohort contained 1,903 scheduled flights; 1,891 completed, 12 were cancelled, and 0 were diverted.

Not a prediction.

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