Boise, ID → Seattle, WA flight delays
BOI → SEA · all airlines · 356 flights · April 2026 · source: US BTS
This route is delayed
11%of the time, by +80 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
89%
Delayed 3h+
0.6%
Cancelled
0.3%
Avg when late
+80m
Best & worst day to fly
Most on-time
Saturday
delayed 0%
Worst
Thursday
delayed 17%
Which airline is most punctual on BOI → SEA?
SkyWestdelayed 10%
Alaskadelayed 13%
Frequently asked
How often is the Boise, ID to Seattle, WA flight delayed?
About 11% of BOI → SEA flights arrive late (15+ minutes), by an average of 80 minutes when they do, based on 356 flights in April 2026.
Which airline is most punctual on BOI → SEA?
SkyWest, delayed 10% of the time — the best of the 2 airlines flying this route.
What is the best day to fly BOI → SEA?
Saturday is the most on-time (delayed 0%), while Thursday is the worst (delayed 17%).
Airport overviews