Seattle, WA → Boise, ID flight delays
SEA → BOI · all airlines · 355 flights · April 2026 · source: US BTS
This route is delayed
11%of the time, by +46 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+
0.3%
Cancelled
0%
Avg when late
+46m
Best & worst day to fly
Most on-time
Monday
delayed 4%
Worst
Friday
delayed 15%
Which airline is most punctual on SEA → BOI?
SkyWestdelayed 9%
Alaskadelayed 16%
Frequently asked
How often is the Seattle, WA to Boise, ID flight delayed?
About 11% of SEA → BOI flights arrive late (15+ minutes), by an average of 46 minutes when they do, based on 355 flights in April 2026.
Which airline is most punctual on SEA → BOI?
SkyWest, delayed 9% of the time — the best of the 2 airlines flying this route.
What is the best day to fly SEA → BOI?
Monday is the most on-time (delayed 4%), while Friday is the worst (delayed 15%).
Airport overviews