Which airline is most reliable for SEA (Seattle) to MCI (Kansas City)?

The most reliable airline on the SEA to MCI route is Alaska Airlines, with an on-time arrival rate of 81%.

How often are flights delayed from SEA to MCI?

About 21% of flights from SEA to MCI experience delays. 79% arrive on time.

What's the average delay on SEA to MCI flights?

When flights from SEA to MCI are delayed, the average delay is approximately 53 minutes.

Is a short connection safe after a SEA to MCI flight?

With 79% of SEA to MCI flights arriving on time and an average delay of 53 minutes when late, a connection under 60 minutes at MCI is risky. We recommend at least 75-90 minutes for domestic connections after this route.

SEA → MCI

SEA (Seattle) to MCI (Kansas City)

SEA (Seattle) to MCI (Kansas City) flights arrive on time 79% of the time. The most reliable airline on this route is Alaska Airlines at 81%. The average delay is 53 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated August 2026.

SEA → MCI on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

Better

This route is on time most of the time. About 79% of flights arrive on schedule.

Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Accurate?

Airlines are roughly equal on this route — Alaska Airlines leads slightly at 81% vs Delta Air Lines at 80%.

Airline Comparison

Alaska Airlines leads at 81% on time; Delta Air Lines trails at 80%.

Accurate?

Good to know

Departing from SEA

80% on time

Expect ~21 min sitting on the taxiway after your gate pushes back. SEA has long runway queues.

TSA is currently ~5 min. Best time: 4 AM (about 5 min).

More about SEA →

Arriving at MCI

80% on time

When flights into MCI are late, the average delay is 68 minutes. Build buffer if you have ground plans.

If connecting at MCI: TSA is ~5 min right now. Allow at least 60 minutes for a domestic connection.

More about MCI →Connection times at MCI →

Flight cancelled or delayed?

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Flying out of SEA? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

SEA Airport MCI Airport

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Data last updated August 2026. Source: Bureau of Transportation Statistics.