Historical on-time performance
St. Louis to Kansas City
Flights on STL–MCI arrive on time 76% of the time over the last 12 months.
based on 1,020 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time76%Medianon timep9040 minCancel0.3%Flights1,020
Why flights run late
Delay causes
- Airline23%
- Weather6%
- Air traffic (NAS)9%
- Late aircraft62%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 3 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 STL → MCI
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 62% to 91% on time.
- Mornings91% on time · p90 10 min · 468 flights
- Middays88% on time · p90 15 min · 819 flights
- Afternoons75% on time · p90 40 min · 719 flights
- Evenings70% on time · p90 40 min · 232 flights
- Overnights62% on time · p90 60 min · 952 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 67% to 82% on time.
- Wednesdays82% on time · p90 30 min · 471 flights
- Tuesdays81% on time · p90 30 min · 474 flights
- Fridays78% on time · p90 35 min · 486 flights
- Saturdays76% on time · p90 40 min · 331 flights
- Mondays76% on time · p90 40 min · 481 flights
- Thursdays75% on time · p90 35 min · 481 flights
- Sundays67% on time · p90 50 min · 466 flights
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