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. With Alaska Airlines running most of the schedule, the shape of a week is predictable, which makes an open premium seat on a given date easy to spot and quick to lose. 2LNR tracks confirmed upgrade and award space on Alaska Airlines, on every IDA to SEA departure, so you know which flights have space before you book.

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

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14
Nonstop flights a week
565 mi
Nonstop distance
Free
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Idaho Falls to Seattle flight schedule

Scheduled nonstop departures for IDA to SEA, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Idaho Falls (IDA) to Seattle (SEA)
Date Flight Airline Departs IDA Arrives SEA Duration Aircraft
AS 3423Alaska Airlines, Inc.06:1807:202h 2mE75
AS 3027Alaska Airlines, Inc.14:0115:072h 6mE75
AS 3423Alaska Airlines, Inc.06:1807:202h 2mE75
AS 3027Alaska Airlines, Inc.14:0115:072h 6mE75
AS 3423Alaska Airlines, Inc.06:1807:202h 2mE75
AS 3027Alaska Airlines, Inc.14:0115:072h 6mE75
AS 3423Alaska Airlines, Inc.06:1807:202h 2mE75
AS 3027Alaska Airlines, Inc.14:0115:072h 6mE75
AS 3423Alaska Airlines, Inc.06:1807:202h 2mE75
AS 3027Alaska Airlines, Inc.14:0115:072h 6mE75
AS 3423Alaska Airlines, Inc.06:1807:202h 2mE75
AS 3027Alaska Airlines, Inc.14:0115:072h 6mE75
AS 3423Alaska Airlines, Inc.06:1807:202h 2mE75
AS 3027Alaska Airlines, Inc.14:0115:072h 6mE75

Showing all 14 scheduled IDA to SEA departures across the next 7 days with service. 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 has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every IDA to SEA date on the interactive map

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.

See real availability

Confirmed upgrade and award seats on each IDA to SEA departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are 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. 2LNR tracks confirmed upgrade and award space on each of them.

See IDA to SEA on the interactive map →

Frequently asked questions about IDA to SEA

How far is Seattle from Idaho Falls?
IDA to SEA covers about 565 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
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 and Seattle 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 06:18 and 14:01, local time at Idaho Falls. The schedule table on this page lists every departure by date, with its arrival time 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.

Never miss IDA to SEA upgrade or award space

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

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