BOI → SEABoise to Seattle

live

Direct flights from Boise (BOI) to Seattle (SEA): 112 nonstop departures observed each week across 2 airlines. The median arrival is 26 minutes early. 1 of the 23 tracked flights was cancelled. The nonstop covers 641 km, an estimated 1 hour 19 minutes in the air. Measured by Pro Flight Search from live flight boards at Boise and Seattle. Updated 15 November 2026 at 09:22 UTC.

Today, BOI → SEA

Sun 15 Nov · local times
  1. · DL3688Delta Air Lines On schedule SEA est. 19:42sched 20:12
  2. · DL3740Delta Air Lines On schedule SEA est. 09:48sched 09:59

Checked BOI board 22:03 · SEA board 02:19

BOI Boise busy · +22
SEA Seattle smooth · +8
641 km · ~1h 19m est.
dep bank 06:37–20:59112x weekly
Running clean · 2 airlines · 112x weekly · nonstop
79 / 100

route health from live BOI and SEA delay boards

Median arrival delay is −26 min. 1 of 23 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−26 minacross the last 3 arrivals
Flight time~1h 19mestimated from route distance
Weekly departures112x2 direct airlines on the leg
Cancelled4.3%recent route rate · 1 of 23

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
Delta Air LinesDL

Flights DL3775 varies daily · DL3740 varies daily · DL3750 varies daily · DL3678 12:08 daily

History

operated legs · board outcomes
11-14AS2120departed+17
11-14AS2123departed+67
11-14AS2124departed+33
11-14AS2347departed+9
11-14AS3029departed+115
11-14AS337departed+24
11-14AS359departed+78
11-14AS410departed+171
11-14DL3677departed+234
11-14DL3740departed+18
11-14DL3750departed+11
11-14DL3775departed+19
11-14DL3817departed+74
11-13AS2120dep +25 → arr−9
11-13AS2123cancelledCNX
11-13AS2347dep +10 → arr−26
11-13AS3029dep +10 → arr−33
11-13AS410departed+14
11-13DL3677departed+548
11-13DL3740departed+45
11-13DL3750departed+10
11-13DL3775departed+24
11-13DL3817departed+14

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
BOIBoise +22 min busy 🌤 clear · ESE 10 kt Full BOI delay board →
SEASeattle +8 min smooth 🌤 mostly cloudy · S 10 kt Full SEA delay board →

Weather lens

Conditions are tightest at BOI: a 40% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +12 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →

How the Boise to Seattle route actually runs

Pro Flight Search records official board updates for nonstop BOI to SEA 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: Boise (BOI) to Seattle (SEA) route reliability, measured from operated flights on official airport boards.

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

BOI to SEA questions

Is BOI–SEA running on time right now?

Mostly on schedule. The departure side at BOI is the weaker end, route health score 79/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on BOI–SEA?

Operators schedule morning departures around 06:37 and evening departures around 17:59 from BOI. Earlier flights typically land before destination-airport delays accumulate later in the day; check the SEA delay card to confirm conditions when you'd arrive.

How long is the flight from BOI to SEA?

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 BOI–SEA fly?

2 carriers operate this route, around 112 flights a week between them. Compare carrier days and times in the airline list above.