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

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

Among 1,905 scheduled United Airlines flights from SEA to DEN, 86.1% arrived on time, 7.7% arrived at least 30 minutes late, and 0.8% 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 SIGNALLower disruption
86.1%arrived on time
7.7%30+ min late
0.8%cancelled
1,905scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late7.7%
60+ minutes late4.4%
Cancelled0.8%
Average arrival-2.6 mincompleted flights

What did United Airlines SEA to DEN record?

United Airlines completed 98.5% of its scheduled reportable SEA to DEN flights in the observation window. 86.1% of all scheduled flights arrived less than 15 minutes late, while 4.4% arrived at least an hour late.

What were United Airlines SEA to DEN disruption rates?

For United Airlines SEA-to-DEN flights, 7.7% arrived at least 30 minutes late, 0.8% were cancelled, and 0.7% were diverted.

Compare all airlines on this route

What was the United Airlines SEA to DEN scheduled cohort?

The United Airlines SEA-to-DEN cohort contained 1,905 scheduled flights; 1,876 completed, 16 were cancelled, and 13 were diverted.

Not a prediction.

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