Portland, OR → Seattle, WA flight delays
PDX → SEA · all airlines · 372 flights · April 2026 · source: US BTS
This route is delayed
10%of the time, by +74 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
90%
Delayed 3h+
0.8%
Cancelled
0%
Avg when late
+74m
Best & worst day to fly
Most on-time
Friday
delayed 6%
Worst
Monday
delayed 16%
Which airline is most punctual on PDX → SEA?
Alaskadelayed 5%
SkyWestdelayed 10%
Deltadelayed 21%
Frequently asked
How often is the Portland, OR to Seattle, WA flight delayed?
About 10% of PDX → SEA flights arrive late (15+ minutes), by an average of 74 minutes when they do, based on 372 flights in April 2026.
Which airline is most punctual on PDX → SEA?
Alaska, delayed 5% of the time — the best of the 3 airlines flying this route.
What is the best day to fly PDX → SEA?
Friday is the most on-time (delayed 6%), while Monday is the worst (delayed 16%).
Airport overviews