BOI (Boise) to SEA (Seattle) flights arrive on time 84% of the time. The most reliable airline on this route is SkyWest Airlines at 84%. The average delay is 53 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated March 2026.BOI → SEA
BOI (Boise) to SEA (Seattle)
BOI → SEA on-time performance by month
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This route is on time most of the time. About 84% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Airlines are roughly equal on this route — SkyWest Airlines leads slightly at 84% vs Alaska Airlines at 80%.
Airline Comparison
SkyWest Airlines leads at 84% on time; Alaska Airlines trails at 80%.
Accurate?
Good to know
Departing from BOI
84% on timeExpect ~16 min sitting on the taxiway after your gate pushes back. BOI has long runway queues.
TSA is currently ~22 min. Best time: 4 AM (about 5 min).
Arriving at SEA
82% on timeWhen flights into SEA are late, the average delay is 57 minutes. Build buffer if you have ground plans.
If connecting at SEA: TSA is ~10 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated March 2026. Source: Bureau of Transportation Statistics.