Kansas City to Seattle (MCI-SEA): nonstop upgrade & award space

Alaska Airlines and Delta Air Lines fly nonstop between Kansas City (MCI) 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 and Delta Air Lines, on every MCI 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
1,486 mi
Nonstop distance
Free
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Kansas City to Seattle flight schedule

Scheduled nonstop departures for MCI 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 Kansas City (MCI) to Seattle (SEA)
Date Flight Airline Departs MCI Arrives SEA Duration Aircraft
AS 563Alaska Airlines, Inc.07:0008:573h 57m7M9
DL 2105Delta Air Lines07:2409:153h 51m223
AS 418Alaska Airlines, Inc.13:3415:293h 55m73J
AS 563Alaska Airlines, Inc.07:0208:593h 57m7M9
DL 2105Delta Air Lines07:2409:153h 51m223
AS 418Alaska Airlines, Inc.13:3415:293h 55m7M8
AS 563Alaska Airlines, Inc.07:0008:573h 57m73J
DL 2105Delta Air Lines07:2409:153h 51m223
AS 418Alaska Airlines, Inc.13:3415:293h 55m7M8
AS 563Alaska Airlines, Inc.07:0208:593h 57m73J
DL 2105Delta Air Lines07:2409:153h 51m223
AS 418Alaska Airlines, Inc.13:3415:293h 55m7M9
AS 563Alaska Airlines, Inc.07:0208:593h 57m73J
DL 2105Delta Air Lines07:2409:153h 51m223
AS 418Alaska Airlines, Inc.13:3415:293h 55m73J
AS 563Alaska Airlines, Inc.07:0208:593h 57m7M9
DL 2105Delta Air Lines07:2409:153h 51m223
AS 418Alaska Airlines, Inc.13:3415:293h 55m7M8
AS 563Alaska Airlines, Inc.07:0008:573h 57m73H
DL 2105Delta Air Lines07:2409:153h 51m223
AS 418Alaska Airlines, Inc.13:3415:293h 55m7M8

Showing all 21 scheduled MCI 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 MCI to SEA date on the interactive map

Confirmed upgrade & award space on MCI 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 Kansas City 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 MCI 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 MCI to SEA on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Kansas City to Seattle nonstop

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

See MCI to SEA on the interactive map →

Frequently asked questions about MCI to SEA

How far is Seattle from Kansas City?
MCI to SEA covers about 1,486 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 MCI to SEA?
Alaska Airlines and Delta Air Lines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines.
How many flights a week are there from MCI to SEA?
About 21 nonstop flights a week run between Kansas City and Seattle 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 MCI to SEA depart?
Scheduled MCI to SEA nonstops in the next 7 days with service leave between 07:00 and 13:34, local time at Kansas City. 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 MCI to SEA?
Open the MCI 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.

Never miss MCI 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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