--- title: "Idaho Falls to Seattle flights: who flies IDA-SEA" description: "Alaska Airlines flies nonstop from IDA to SEA, about 14 flights a week, covering 565 miles. See confirmed upgrade and award space by date on 2LNR, the next 14 days free." canonical: "https://2lnr.com/routes/ida-sea" url: "https://2lnr.com/routes/ida-sea.md" date_modified: "2026-10-18T05:10:47Z" --- # Idaho Falls to Seattle (IDA-SEA): nonstop upgrade & award space Alaska Airlines flies nonstop between Idaho Falls (IDA) and Seattle (SEA), roughly 14 times a week. In the timetable below it flies as AS 3027 and AS 3423, scheduled at 2h 6m to 2h 11m for the 565 miles. 2LNR checks confirmed upgrade and award space on Alaska Airlines 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 23, 2026. See IDA to SEA on the interactive map [Get started free](https://2lnr.com/login) 14 Flights a week, 4-week average 2h 6m to 2h 11m Scheduled flight time 565 mi Nonstop distance Free To get started ## Idaho Falls to Seattle flight schedule Scheduled nonstop departures for IDA to SEA starting October 23, 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 Idaho Falls (IDA) to Seattle (SEA) | Date | Flight | Airline | Departs IDA | Arrives SEA | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Fri, Oct 23 | AS 3423 | Alaska Airlines, Inc. | 06:09 | 07:20 | 2h 11m | [Embraer E175](https://2lnr.com/seatmaps/as/e175.md) | | Fri, Oct 23 | AS 3027 | Alaska Airlines, Inc. | 13:58 | 15:04 | 2h 6m | Embraer E175 | | Sat, Oct 24 | AS 3423 | Alaska Airlines, Inc. | 06:09 | 07:20 | 2h 11m | Embraer E175 | | Sat, Oct 24 | AS 3027 | Alaska Airlines, Inc. | 13:58 | 15:04 | 2h 6m | Embraer E175 | | Sun, Oct 25 | AS 3423 | Alaska Airlines, Inc. | 06:09 | 07:20 | 2h 11m | Embraer E175 | | Sun, Oct 25 | AS 3027 | Alaska Airlines, Inc. | 13:58 | 15:04 | 2h 6m | Embraer E175 | | Mon, Oct 26 | AS 3423 | Alaska Airlines, Inc. | 06:09 | 07:20 | 2h 11m | Embraer E175 | | Mon, Oct 26 | AS 3027 | Alaska Airlines, Inc. | 13:58 | 15:04 | 2h 6m | Embraer E175 | | Tue, Oct 27 | AS 3423 | Alaska Airlines, Inc. | 06:09 | 07:20 | 2h 11m | Embraer E175 | | Tue, Oct 27 | AS 3027 | Alaska Airlines, Inc. | 13:58 | 15:04 | 2h 6m | Embraer E175 | | Wed, Oct 28 | AS 3423 | Alaska Airlines, Inc. | 06:09 | 07:20 | 2h 11m | Embraer E175 | | Wed, Oct 28 | AS 3027 | Alaska Airlines, Inc. | 13:58 | 15:04 | 2h 6m | Embraer E175 | | Thu, Oct 29 | AS 3423 | Alaska Airlines, Inc. | 06:09 | 07:20 | 2h 11m | Embraer E175 | | Thu, Oct 29 | AS 3027 | Alaska Airlines, Inc. | 13:58 | 15:04 | 2h 6m | Embraer E175 | Showing all 14 scheduled IDA to SEA departures across 7 days with service, starting October 23, 2026. Later dates are 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 IDA to SEA date on the interactive map ## Aircraft on the Idaho Falls to Seattle nonstop Alaska Airlines flies the [Embraer E175](https://2lnr.com/seatmaps/as/e175.md) on every departure in the schedule table on this page. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## Confirmed upgrade & award space on IDA to SEA departures 2LNR tracks confirmed upgrade and award space on Alaska Airlines, segment by segment and date by date. Open the calendar for Idaho Falls to Seattle to see which departures have space, the next 14 days free on every product and the full horizon on Pro. Alaska Airlines award space was open on 13 of the 14 Idaho Falls to Seattle departure dates from October 19 to November 1 that 2LNR checked in the 7 days to October 19, 2026. ### See real availability Confirmed upgrade or award seats by date on the IDA 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 IDA to SEA on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Idaho Falls to Seattle nonstop Carriers operating IDA 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) See IDA to SEA on the interactive map → ## Frequently asked questions about IDA to SEA **How long is the flight from Idaho Falls (IDA) to Seattle (SEA)?** Scheduled flight times from Idaho Falls (IDA) to Seattle (SEA) run from 2h 6m to 2h 11m across the departures in the schedule table on this page. The nonstop covers about 565 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from IDA to SEA?** Alaska Airlines is currently the only airline flying IDA to SEA nonstop. 2LNR tracks confirmed upgrade and award space on Alaska Airlines. **How many flights a week are there from IDA to SEA?** About 14 nonstop flights a week run between Idaho Falls (IDA) and Seattle (SEA) in the current schedule, operated by Alaska Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next. **What time do flights from IDA to SEA depart?** Scheduled IDA to SEA nonstops in the next 7 days with service leave between 06:09 and 13:58, local time at Idaho Falls. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate IDA to SEA nonstop?** In the schedule table on this page, IDA to SEA nonstops fly as AS 3027 and AS 3423 on Alaska Airlines. The table lists each departure by date with its times and aircraft. **How do I check upgrade or award availability on IDA to SEA?** Open the IDA to SEA route on the interactive map or the matrix to see confirmed upgrade and award space by date on Alaska Airlines, 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 IDA upgrade and award space](https://2lnr.com/routes/sea-ida.md). Award seats rather than schedules? See [Alaska Airlines award availability](https://2lnr.com/awards/as.md). Looking beyond this route? See [every route from Idaho Falls (IDA)](https://2lnr.com/routes/ida.md), or [every route from Seattle (SEA)](https://2lnr.com/routes/sea.md). Nonstops to Seattle (SEA) from other airports within 150 miles of Idaho Falls (IDA): - [Jackson (JAC) to Seattle (SEA)](https://2lnr.com/routes/jac-sea.md), 67 miles from IDA - [Hailey (SUN) to Seattle (SEA)](https://2lnr.com/routes/sun-sea.md), 112 miles from IDA Nonstops from Idaho Falls (IDA) to other airports within 150 miles of Seattle (SEA): - [Idaho Falls (IDA) to Portland (PDX)](https://2lnr.com/routes/ida-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 IDA 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)