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

United Airlines Houston, TX (IAH) to Seattle, WA (SEA) reliability

Among 1,243 scheduled United Airlines flights from IAH to SEA, 76.3% arrived on time, 14.2% arrived at least 30 minutes late, and 0.4% 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
76.3%arrived on time
14.2%30+ min late
0.4%cancelled
1,243scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late14.2%
60+ minutes late7.6%
Cancelled0.4%
Average arrival+6.8 mincompleted flights

What did United Airlines IAH to SEA record?

United Airlines completed 99.4% of its scheduled reportable IAH to SEA flights in the observation window. 76.3% of all scheduled flights arrived less than 15 minutes late, while 7.6% arrived at least an hour late.

What were United Airlines IAH to SEA disruption rates?

For United Airlines IAH-to-SEA flights, 14.2% arrived at least 30 minutes late, 0.4% were cancelled, and 0.2% were diverted.

Compare all airlines on this route

What was the United Airlines IAH to SEA scheduled cohort?

The United Airlines IAH-to-SEA cohort contained 1,243 scheduled flights; 1,236 completed, 5 were cancelled, and 2 were diverted.

Not a prediction.

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