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

Alaska Airlines Philadelphia, PA (PHL) to Seattle, WA (SEA) reliability

Among 656 scheduled Alaska Airlines flights from PHL to SEA, 64.5% arrived on time, 22.4% arrived at least 30 minutes late, and 1.5% 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 SIGNALVariable
64.5%arrived on time
22.4%30+ min late
1.5%cancelled
656scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late22.4%
60+ minutes late9.6%
Cancelled1.5%
Average arrival+11.1 mincompleted flights

What did Alaska Airlines PHL to SEA record?

Alaska Airlines completed 98.3% of its scheduled reportable PHL to SEA flights in the observation window. 64.5% of all scheduled flights arrived less than 15 minutes late, while 9.6% arrived at least an hour late.

What were Alaska Airlines PHL to SEA disruption rates?

For Alaska Airlines PHL-to-SEA flights, 22.4% arrived at least 30 minutes late, 1.5% were cancelled, and 0.2% were diverted.

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What was the Alaska Airlines PHL to SEA scheduled cohort?

The Alaska Airlines PHL-to-SEA cohort contained 656 scheduled flights; 645 completed, 10 were cancelled, and 1 were diverted.

Not a prediction.

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