San Diego, CA → Seattle, WA flight delays
SAN → SEA · all airlines · 408 flights · April 2026 · source: US BTS
This route is delayed
12%of the time, by +64 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
88%
Delayed 3h+
1%
Cancelled
0.2%
Avg when late
+64m
Best & worst day to fly
Most on-time
Saturday
delayed 7%
Worst
Tuesday
delayed 15%
Which airline is most punctual on SAN → SEA?
Deltadelayed 9%
Alaskadelayed 10%
Southwestdelayed 37%
Frequently asked
How often is the San Diego, CA to Seattle, WA flight delayed?
About 12% of SAN → SEA flights arrive late (15+ minutes), by an average of 64 minutes when they do, based on 408 flights in April 2026.
Which airline is most punctual on SAN → SEA?
Delta, delayed 9% of the time — the best of the 3 airlines flying this route.
What is the best day to fly SAN → SEA?
Saturday is the most on-time (delayed 7%), while Tuesday is the worst (delayed 15%).
Airport overviews