Chicago, IL → Seattle, WA flight delays
ORD → SEA · all airlines · 465 flights · April 2026 · source: US BTS
This route is delayed
24%of the time, by +59 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
76%
Delayed 3h+
1.1%
Cancelled
1.3%
Avg when late
+59m
Best & worst day to fly
Most on-time
Saturday
delayed 11%
Worst
Thursday
delayed 33%
Which airline is most punctual on ORD → SEA?
Uniteddelayed 20%
Alaskadelayed 23%
Deltadelayed 24%
Americandelayed 30%
Frequently asked
How often is the Chicago, IL to Seattle, WA flight delayed?
About 24% of ORD → SEA flights arrive late (15+ minutes), by an average of 59 minutes when they do, based on 465 flights in April 2026.
Which airline is most punctual on ORD → SEA?
United, delayed 20% of the time — the best of the 4 airlines flying this route.
What is the best day to fly ORD → SEA?
Saturday is the most on-time (delayed 11%), while Thursday is the worst (delayed 33%).
Airport overviews