Historical on-time performance
Kansas City to Seattle
Flights on MCI–SEA arrive on time 80% of the time over the last 12 months.
based on 1,021 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Delta Air LinesOn-time81%Medianon timep9025 minCancel2.0%Flights307
- Alaska AirlinesOn-time79%Medianon timep9035 minCancel1.0%Flights714
Why flights run late
Delay causes
- Airline45%
- Weather3%
- Air traffic (NAS)19%
- Late aircraft33%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline92%
- Weather8%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 13 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly MCI → SEA
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 88% on time.
- Mornings88% on time · p90 15 min · 2,009 flights
- Afternoons80% on time · p90 30 min · 915 flights
- Middays77% on time · p90 30 min · 136 flights · limited
- Evenings62% on time · p90 45 min · 356 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 88% on time.
- Tuesdays88% on time · p90 20 min · 466 flights
- Mondays85% on time · p90 25 min · 503 flights
- Thursdays83% on time · p90 25 min · 501 flights
- Saturdays83% on time · p90 25 min · 475 flights
- Wednesdays81% on time · p90 30 min · 462 flights
- Fridays81% on time · p90 25 min · 494 flights
- Sundays80% on time · p90 25 min · 536 flights
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