--- title: "Boise (BOI) to Seattle (SEA) flights: who flies it" description: "Alaska Airlines and Delta Air Lines fly nonstop from BOI to SEA, about 105 flights a week, covering 398 miles. Upgrade and award space by date on 2LNR, next 14 days free." canonical: "https://2lnr.com/routes/boi-sea" url: "https://2lnr.com/routes/boi-sea.md" date_modified: "2026-10-18T05:10:47Z" --- # 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 October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 22, 2026. See BOI to SEA on the interactive map [Get started free](https://2lnr.com/login) 105 Flights a week, 4-week average 1h 34m to 1h 57m Scheduled flight time 398 mi Nonstop distance Free To get started ## 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. Scheduled nonstop departures from Boise (BOI) to Seattle (SEA) | Date | Flight | Airline | Departs BOI | Arrives SEA | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Wed, Oct 21 | AS 364 | Alaska Airlines, Inc. | 06:43 | 07:20 | 1h 37m | [Boeing 737 MAX 9](https://2lnr.com/seatmaps/as/737-max-9.md) | | Wed, Oct 21 | DL 3775 | Delta Air Lines | 06:45 | 07:39 | 1h 54m | [Embraer E175](https://2lnr.com/seatmaps/dl/e175.md) | | Wed, Oct 21 | AS 3020 | Alaska Airlines, Inc. | 08:25 | 09:07 | 1h 42m | [Embraer E175](https://2lnr.com/seatmaps/as/e175.md) | | Wed, Oct 21 | DL 3740 | Delta Air Lines | 08:59 | 09:54 | 1h 55m | Embraer E175 | | Wed, Oct 21 | AS 2347 | Alaska Airlines, Inc. | 10:06 | 10:40 | 1h 34m | Embraer E175 | | Wed, Oct 21 | DL 3750 | Delta Air Lines | 10:34 | 11:31 | 1h 57m | Embraer E175 | | Wed, Oct 21 | DL 3678 | Delta Air Lines | 12:08 | 13:00 | 1h 52m | Embraer E175 | | Wed, Oct 21 | AS 2407 | Alaska Airlines, Inc. | 12:58 | 13:32 | 1h 34m | Embraer E175 | | Wed, Oct 21 | AS 356 | Alaska Airlines, Inc. | 14:06 | 14:41 | 1h 35m | [Boeing 737-800](https://2lnr.com/seatmaps/as/737-800.md) | | Wed, Oct 21 | DL 3906 | Delta Air Lines | 15:36 | 16:24 | 1h 48m | Embraer E175 | | Wed, Oct 21 | AS 320 | Alaska Airlines, Inc. | 16:18 | 16:56 | 1h 38m | Boeing 737-800 | | Wed, Oct 21 | DL 4127 | Delta Air Lines | 17:59 | 18:41 | 1h 42m | Embraer E175 | | Wed, Oct 21 | AS 382 | Alaska Airlines, Inc. | 18:04 | 18:47 | 1h 43m | [Boeing 737-700](https://2lnr.com/seatmaps/as/737-700.md) | | Wed, Oct 21 | AS 2352 | Alaska Airlines, Inc. | 20:22 | 20:57 | 1h 35m | Embraer E175 | | Thu, Oct 22 | AS 364 | Alaska Airlines, Inc. | 06:43 | 07:20 | 1h 37m | [Boeing 737-900](https://2lnr.com/seatmaps/as/737-900.md) | | Thu, Oct 22 | DL 3775 | Delta Air Lines | 06:45 | 07:39 | 1h 54m | Embraer E175 | | Thu, Oct 22 | AS 3020 | Alaska Airlines, Inc. | 08:25 | 09:07 | 1h 42m | Embraer E175 | | Thu, Oct 22 | DL 3740 | Delta Air Lines | 08:59 | 09:54 | 1h 55m | Embraer E175 | | Thu, Oct 22 | AS 2347 | Alaska Airlines, Inc. | 10:06 | 10:40 | 1h 34m | Embraer E175 | | Thu, Oct 22 | DL 3750 | Delta Air Lines | 10:34 | 11:31 | 1h 57m | Embraer E175 | | Thu, Oct 22 | DL 3678 | Delta Air Lines | 12:08 | 13:00 | 1h 52m | Embraer E175 | | Thu, Oct 22 | AS 2407 | Alaska Airlines, Inc. | 12:58 | 13:32 | 1h 34m | Embraer E175 | | Thu, Oct 22 | AS 356 | Alaska Airlines, Inc. | 14:06 | 14:41 | 1h 35m | Boeing 737-800 | | Thu, Oct 22 | DL 3906 | Delta Air Lines | 15:36 | 16:24 | 1h 48m | Embraer E175 | | Thu, Oct 22 | AS 320 | Alaska Airlines, Inc. | 16:18 | 16:56 | 1h 38m | Boeing 737-800 | | Thu, Oct 22 | DL 4127 | Delta Air Lines | 17:59 | 18:41 | 1h 42m | Embraer E175 | | Thu, Oct 22 | AS 382 | Alaska Airlines, Inc. | 18:04 | 18:47 | 1h 43m | Boeing 737-800 | | Thu, Oct 22 | DL 3688 | Delta Air Lines | 19:13 | 20:10 | 1h 57m | Embraer E175 | | Thu, Oct 22 | AS 2352 | Alaska Airlines, Inc. | 20:22 | 20:57 | 1h 35m | Embraer E175 | | Fri, Oct 23 | AS 364 | Alaska Airlines, Inc. | 06:43 | 07:20 | 1h 37m | Boeing 737-900 | | Fri, Oct 23 | DL 3775 | Delta Air Lines | 06:45 | 07:39 | 1h 54m | Embraer E175 | | Fri, Oct 23 | AS 3020 | Alaska Airlines, Inc. | 08:25 | 09:07 | 1h 42m | Embraer E175 | | Fri, Oct 23 | DL 3740 | Delta Air Lines | 08:59 | 09:54 | 1h 55m | Embraer E175 | | Fri, Oct 23 | AS 2347 | Alaska Airlines, Inc. | 10:06 | 10:40 | 1h 34m | Embraer E175 | | Fri, Oct 23 | DL 3750 | Delta Air Lines | 10:34 | 11:31 | 1h 57m | Embraer E175 | | Fri, Oct 23 | DL 3678 | Delta Air Lines | 12:08 | 13:00 | 1h 52m | Embraer E175 | | Fri, Oct 23 | AS 2407 | Alaska Airlines, Inc. | 12:58 | 13:32 | 1h 34m | Embraer E175 | | Fri, Oct 23 | AS 356 | Alaska Airlines, Inc. | 14:06 | 14:41 | 1h 35m | Boeing 737-900 | | Fri, Oct 23 | DL 3906 | Delta Air Lines | 15:36 | 16:24 | 1h 48m | Embraer E175 | | Fri, Oct 23 | AS 320 | Alaska Airlines, Inc. | 16:18 | 16:56 | 1h 38m | Boeing 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](https://2lnr.com/seatmaps/as/e175.md), the [Boeing 737-800](https://2lnr.com/seatmaps/as/737-800.md), the [Boeing 737-900](https://2lnr.com/seatmaps/as/737-900.md), the [Boeing 737 MAX 9](https://2lnr.com/seatmaps/as/737-max-9.md), and the [Boeing 737-700](https://2lnr.com/seatmaps/as/737-700.md), and Delta Air Lines flies the [Embraer E175](https://2lnr.com/seatmaps/dl/e175.md). 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. ### Set an alert 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. - [Alaska Airlines (AS) route map](https://2lnr.com/routes/airlines/as.md)\ [The aircraft AS flies](https://2lnr.com/seatmaps/as.md) - [Delta Air Lines (DL) route map](https://2lnr.com/routes/airlines/dl.md)\ [The aircraft DL flies](https://2lnr.com/seatmaps/dl.md) 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. Flying the other way? See [SEA to BOI upgrade and award space](https://2lnr.com/routes/sea-boi.md). Award seats rather than schedules? See [Alaska Airlines award availability](https://2lnr.com/awards/as.md) or [Delta Air Lines award availability](https://2lnr.com/awards/dl.md). Looking beyond this route? See [every route from Boise (BOI)](https://2lnr.com/routes/boi.md), or [every route from Seattle (SEA)](https://2lnr.com/routes/sea.md). Nonstops to Seattle (SEA) from other airports within 150 miles of Boise (BOI): - [Hailey (SUN) to Seattle (SEA)](https://2lnr.com/routes/sun-sea.md), 97 miles from BOI Nonstops from Boise (BOI) to other airports within 150 miles of Seattle (SEA): - [Boise (BOI) to Portland (PDX)](https://2lnr.com/routes/boi-pdx.md), 129 miles from SEA Distances are great-circle between the airports, not driving distance. - [How Alaska upgrades clear](https://2lnr.com/about/as/upgrades.md) - [How to read award availability by date](https://2lnr.com/guides/award-availability.md) ## Never miss BOI to SEA upgrade or award space See what's open by date on this route, the next 14 days free on every product and the full horizon on Pro. [Get started free](https://2lnr.com/login)