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

Alaska Airlines Seattle, WA (SEA) to St. Louis, MO (STL) reliability

Among 780 scheduled Alaska Airlines flights from SEA to STL, 81.8% arrived on time, 8.5% arrived at least 30 minutes late, and 0.3% 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 SIGNALLower disruption
81.8%arrived on time
8.5%30+ min late
0.3%cancelled
780scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late8.5%
60+ minutes late2.7%
Cancelled0.3%
Average arrival-2.5 mincompleted flights

What did Alaska Airlines SEA to STL record?

Alaska Airlines completed 99.5% of its scheduled reportable SEA to STL flights in the observation window. 81.8% of all scheduled flights arrived less than 15 minutes late, while 2.7% arrived at least an hour late.

What were Alaska Airlines SEA to STL disruption rates?

For Alaska Airlines SEA-to-STL flights, 8.5% arrived at least 30 minutes late, 0.3% were cancelled, and 0.3% were diverted.

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What was the Alaska Airlines SEA to STL scheduled cohort?

The Alaska Airlines SEA-to-STL cohort contained 780 scheduled flights; 776 completed, 2 were cancelled, and 2 were diverted.

Not a prediction.

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