Missoula to Seattle (MSO-SEA): nonstop upgrade & award space

Alaska Airlines flies nonstop between Missoula (MSO) and Seattle (SEA), roughly 21 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 MSO 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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21
Nonstop flights a week
388 mi
Nonstop distance
Free
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Missoula to Seattle flight schedule

Scheduled nonstop departures for MSO 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 Missoula (MSO) to Seattle (SEA)
Date Flight Airline Departs MSO Arrives SEA Duration Aircraft
AS 722Alaska Airlines, Inc.07:0007:431h 43m73J
AS 2219Alaska Airlines, Inc.14:0514:401h 35mE75
AS 660Alaska Airlines, Inc.16:1617:001h 44m73J
AS 722Alaska Airlines, Inc.07:0007:431h 43m73J
AS 2219Alaska Airlines, Inc.14:0514:401h 35mE75
AS 660Alaska Airlines, Inc.16:1617:001h 44m7M9
AS 722Alaska Airlines, Inc.07:0007:431h 43m73J
AS 2219Alaska Airlines, Inc.14:0514:401h 35mE75
AS 660Alaska Airlines, Inc.16:1617:001h 44m7M9
AS 722Alaska Airlines, Inc.07:0007:431h 43m73J
AS 2219Alaska Airlines, Inc.14:0514:401h 35mE75
AS 660Alaska Airlines, Inc.16:1617:001h 44m73J
AS 722Alaska Airlines, Inc.07:0007:431h 43m73J
AS 2219Alaska Airlines, Inc.14:0514:401h 35mE75
AS 660Alaska Airlines, Inc.16:1617:001h 44m7M9
AS 722Alaska Airlines, Inc.07:0007:431h 43m73J
AS 2219Alaska Airlines, Inc.14:0514:401h 35mE75
AS 722Alaska Airlines, Inc.07:0007:431h 43m73J
AS 2219Alaska Airlines, Inc.14:0514:401h 35mE75

Showing all 19 scheduled MSO 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 MSO to SEA date on the interactive map

Confirmed upgrade & award space on MSO to SEA departures

2LNR tracks confirmed upgrade and award space on Alaska Airlines, segment by segment and date by date. Open the calendar for Missoula 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 MSO 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 MSO to SEA on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Missoula to Seattle nonstop

Carriers operating MSO to SEA nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See MSO to SEA on the interactive map →

Frequently asked questions about MSO to SEA

How far is Seattle from Missoula?
MSO to SEA covers about 388 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 MSO to SEA?
Alaska Airlines is currently the only airline flying MSO to SEA nonstop. 2LNR tracks confirmed upgrade and award space on Alaska Airlines.
How many flights a week are there from MSO to SEA?
About 21 nonstop flights a week run between Missoula 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 MSO to SEA depart?
Scheduled MSO to SEA nonstops in the next 7 days with service leave between 07:00 and 16:16, local time at Missoula. 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 MSO to SEA?
Open the MSO 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 MSO 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.

Get started free