Boise to Seattle (BOI-SEA): nonstop upgrade & award space

Alaska Airlines and Delta Air Lines fly nonstop between Boise (BOI) and Seattle (SEA), roughly 105 times a week. The timetable below shows the nonstop scheduled at 1h 34m to 1h 57m for the 398 miles. 2LNR checks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines flights on this route, so you can see which departures have space before you book.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

Updated .

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105
Flights a week, 4-week average
1h 34m to 1h 57m
Scheduled flight time
398 mi
Nonstop distance
Free
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Boise to Seattle flight schedule

Scheduled nonstop departures for BOI to SEA starting October 21, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Boise (BOI) to Seattle (SEA)
Date Flight Airline Departs BOI Arrives SEA Duration Aircraft
AS 364Alaska Airlines, Inc.06:4307:201h 37mBoeing 737 MAX 9
DL 3775Delta Air Lines06:4507:391h 54mEmbraer E175
AS 3020Alaska Airlines, Inc.08:2509:071h 42mEmbraer E175
DL 3740Delta Air Lines08:5909:541h 55mEmbraer E175
AS 2347Alaska Airlines, Inc.10:0610:401h 34mEmbraer E175
DL 3750Delta Air Lines10:3411:311h 57mEmbraer E175
DL 3678Delta Air Lines12:0813:001h 52mEmbraer E175
AS 2407Alaska Airlines, Inc.12:5813:321h 34mEmbraer E175
AS 356Alaska Airlines, Inc.14:0614:411h 35mBoeing 737-800
DL 3906Delta Air Lines15:3616:241h 48mEmbraer E175
AS 320Alaska Airlines, Inc.16:1816:561h 38mBoeing 737-800
DL 4127Delta Air Lines17:5918:411h 42mEmbraer E175
AS 382Alaska Airlines, Inc.18:0418:471h 43mBoeing 737-700
AS 2352Alaska Airlines, Inc.20:2220:571h 35mEmbraer E175
AS 364Alaska Airlines, Inc.06:4307:201h 37mBoeing 737-900
DL 3775Delta Air Lines06:4507:391h 54mEmbraer E175
AS 3020Alaska Airlines, Inc.08:2509:071h 42mEmbraer E175
DL 3740Delta Air Lines08:5909:541h 55mEmbraer E175
AS 2347Alaska Airlines, Inc.10:0610:401h 34mEmbraer E175
DL 3750Delta Air Lines10:3411:311h 57mEmbraer E175
DL 3678Delta Air Lines12:0813:001h 52mEmbraer E175
AS 2407Alaska Airlines, Inc.12:5813:321h 34mEmbraer E175
AS 356Alaska Airlines, Inc.14:0614:411h 35mBoeing 737-800
DL 3906Delta Air Lines15:3616:241h 48mEmbraer E175
AS 320Alaska Airlines, Inc.16:1816:561h 38mBoeing 737-800
DL 4127Delta Air Lines17:5918:411h 42mEmbraer E175
AS 382Alaska Airlines, Inc.18:0418:471h 43mBoeing 737-800
DL 3688Delta Air Lines19:1320:101h 57mEmbraer E175
AS 2352Alaska Airlines, Inc.20:2220:571h 35mEmbraer E175
AS 364Alaska Airlines, Inc.06:4307:201h 37mBoeing 737-900
DL 3775Delta Air Lines06:4507:391h 54mEmbraer E175
AS 3020Alaska Airlines, Inc.08:2509:071h 42mEmbraer E175
DL 3740Delta Air Lines08:5909:541h 55mEmbraer E175
AS 2347Alaska Airlines, Inc.10:0610:401h 34mEmbraer E175
DL 3750Delta Air Lines10:3411:311h 57mEmbraer E175
DL 3678Delta Air Lines12:0813:001h 52mEmbraer E175
AS 2407Alaska Airlines, Inc.12:5813:321h 34mEmbraer E175
AS 356Alaska Airlines, Inc.14:0614:411h 35mBoeing 737-900
DL 3906Delta Air Lines15:3616:241h 48mEmbraer E175
AS 320Alaska Airlines, Inc.16:1816:561h 38mBoeing 737-800

Showing the first 40 of 103 scheduled BOI to SEA departures across 7 days with service, starting October 21, 2026. Every remaining date is on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every BOI to SEA date on the interactive map

Aircraft on the Boise to Seattle nonstop

In the schedule table on this page, Alaska Airlines flies the Embraer E175, the Boeing 737-800, the Boeing 737-900, the Boeing 737 MAX 9, and the Boeing 737-700, and Delta Air Lines flies the Embraer E175. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

Confirmed upgrade & award space on BOI to SEA departures

2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines, segment by segment and date by date. Open the calendar for Boise to Seattle to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

In the 7 days to October 19, 2026, 2LNR checked award space on Boise to Seattle departures from October 19 to November 1. Alaska Airlines had space open on 14 of 14 dates checked and Delta Air Lines on 14 of 14.

See real availability

Confirmed upgrade or award seats by date on the BOI to SEA departures 2LNR tracks, checked against live inventory so you know what's open before you book.

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Premium inventory turns over fast. Watch this route on Pro and 2LNR notifies you when space appears on a date you're tracking.

Plan on the map

See BOI to SEA on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Boise to Seattle nonstop

Carriers operating BOI to SEA nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date.

See BOI to SEA on the interactive map →

Frequently asked questions about BOI to SEA

How long is the flight from Boise (BOI) to Seattle (SEA)?
Scheduled flight times from Boise (BOI) to Seattle (SEA) run from 1h 34m to 1h 57m across the departures in the schedule table on this page. The nonstop covers about 398 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from BOI to SEA?
Alaska Airlines and Delta Air Lines fly BOI to SEA nonstop. 2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines.
How many flights a week are there from BOI to SEA?
About 105 nonstop flights a week run between Boise (BOI) and Seattle (SEA) in the current schedule, operated by Alaska Airlines and Delta Air Lines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from BOI to SEA depart?
Scheduled BOI to SEA nonstops in the next 7 days with service leave between 06:43 and 20:22, local time at Boise. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate BOI to SEA nonstop?
The schedule table on this page lists 15 flight numbers for BOI to SEA nonstops, including AS 364, AS 2347, AS 2407, and AS 3020 on Alaska Airlines, and DL 3678, DL 3740, DL 3750, and DL 3775 on Delta Air Lines. The table lists each departure by date with its times and aircraft.
How do I check upgrade or award availability on BOI to SEA?
Open the BOI to SEA route on the interactive map or the matrix to see confirmed upgrade and award space by date on Alaska Airlines and Delta Air Lines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

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See what's open by date on this route, the next 14 days free on every product and the full horizon on Pro.

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