B

Is Alaska Airlines on time Seattle to St. Louis?

780 flights · January 2025 – August 2026 · all airlines on SEA to STL →

82.22%

Arrived on time

Route average 80.18%

0.26%

Cancelled

Route average 0.23%

43 min

When late, late by

The other airlines on this route

Airline Flights On time Grade
Southwest Airlines 103 64.71% D

Month by month

Jul 2025 peak 100 Jun 2026
On-time arrival rate, %