SEA → BOISeattle to Boise

live

Direct flights from Seattle (SEA) to Boise (BOI): 14 nonstop departures observed each week across 2 airlines. 93% of the last 14 operated flights arrived within 15 minutes of schedule. The median arrival is 7 minutes early. No cancellations were recorded across the 14 tracked flights. The nonstop covers 641 km, an estimated 1 hour 19 minutes in the air. Measured by Pro Flight Search from live flight boards at Seattle and Boise. Updated 11 September 2026 at 09:22 UTC.

SEA Seattle busy · +15
BOI Boise smooth · +0
641 km · ~1h 19m est.
dep bank 07:15–21:2014x weekly
Runs reliable · 2 airlines · 14x weekly · nonstop
93% on time

of the last 14 operated SEA → BOI flights arrived within 15 minutes

Median arrival delay is −7 min. 0 of 14 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−7 minacross the last 14 operated legs
Flight time~1h 19mestimated from route distance
Weekly departures14x2 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 14

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Alaska AirlinesDelta Air Lines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Alaska AirlinesAS88% on time

Flights AS248 07:18 daily · AS597 10:00 daily · AS2106 11:50 daily · AS467 13:04 daily

Delta Air LinesDL100% on time

Flights DL3750 07:15 daily · DL3678 09:03 daily · DL3959 12:35 daily · DL4127 14:45 daily

History

operated legs · board outcomes
09-10AS1751arrived−7
09-10AS2106arrived+9
09-10AS2262arrived−9
09-10AS2277arrived−8
09-10AS248arrived−32
09-10AS467arrived+7
09-10AS586arrived−9
09-10AS597arrived+225
09-10DL3678arrived−5
09-10DL3688arrived−12
09-10DL3692arrived−6
09-10DL3750arrived+8
09-10DL3959arrived−14
09-10DL4127arrived−15

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
SEASeattle +15 min busy 🌤 few clouds · S 7 kt Full SEA delay board →
BOIBoise +0 min smooth 🌤 clear · WSW 4 kt Full BOI delay board →

Weather lens

Current conditions put the pressure at SEA and BOI: 36% odds of a 15+ minute delay and around +2 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Seattle to Boise route actually runs

Pro Flight Search records official board updates for nonstop SEA to BOI flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Seattle (SEA) to Boise (BOI) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/SEA-BOI
How we measure this →

SEA to BOI questions

Is SEA–BOI running on time right now?

Smooth skies ahead. The departure side at SEA is the weaker end, route health score 90/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on SEA–BOI?

Operators schedule morning departures around 07:15 and evening departures around 18:03 from SEA. Earlier flights typically land before destination-airport delays accumulate later in the day; check the BOI delay card to confirm conditions when you'd arrive.

How long is the flight from SEA to BOI?

Great-circle distance is 641 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 75–85 min gate-to-gate on this route.

How often does SEA–BOI fly?

2 carriers operate this route, around 97 flights a week between them. Compare carrier days and times in the airline list above.