routeloads.
Route profile SEA-STL

SEA → STL loads

How full flights are between Seattle and St Louis, using the latest 12 months of DOT T-100 data ending Mar 2026.

LATEST 12-MONTH WINDOW

SEA to STL averages 86% full

Seattle to St Louis: 86% average load factor, 263k passengers, and 305k seats in the latest 12-month BTS window.

Load factor
86%
Passengers
263k
Seats
305k

Monthly trend

MonthLoadPassengers
Apr 202580%16k
May 202582%23k
Jun 202587%35k
Jul 202589%38k
Aug 202590%35k
Sep 202588%29k
Oct 202586%19k
Nov 202586%15k
Dec 202585%16k
Jan 202683%11k
Feb 202682%11k
Mar 202689%16k