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Route profile LHR-SEA

LHR ↔ SEA loads

How full flights are between London and Seattle, both directions combined, using the latest 12 months of DOT T-100 data ending Jul 2026.

LATEST 12-MONTH WINDOW

LHR to SEA averages 81% full

London and Seattle: 81% average load factor, 564k passengers, and 695k seats across both directions in the latest 12-month BTS window.

Load factor
81%
Passengers
564k
Seats
695k

Monthly trend

MonthLoadPassengers
Aug 202592%59k
Sep 202589%56k
Oct 202576%46k
Nov 202578%33k
Dec 202584%37k
Jan 202675%33k
Feb 202674%29k
Mar 202683%38k
Apr 202674%44k
May 202677%55k
Jun 202681%64k
Jul 202684%70k