San Jose, CA → Seattle, WA flight delays
SJC → SEA · all airlines · 306 flights · April 2026 · source: US BTS
This route is delayed
13%of the time, by +39 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
87%
Delayed 3h+
0%
Cancelled
0.3%
Avg when late
+39m
Best & worst day to fly
Most on-time
Saturday
delayed 6%
Worst
Thursday
delayed 19%
Which airline is most punctual on SJC → SEA?
SkyWestdelayed 7%
Alaskadelayed 14%
Southwestdelayed 26%
Frequently asked
How often is the San Jose, CA to Seattle, WA flight delayed?
About 13% of SJC → SEA flights arrive late (15+ minutes), by an average of 39 minutes when they do, based on 306 flights in April 2026.
Which airline is most punctual on SJC → SEA?
SkyWest, delayed 7% of the time — the best of the 3 airlines flying this route.
What is the best day to fly SJC → SEA?
Saturday is the most on-time (delayed 6%), while Thursday is the worst (delayed 19%).
Airport overviews