Historical on-time performance
St. Louis to Kansas City
237 miData through Dec 2025Source: US DOT · BTS
Flights on STL–MCI arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
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
- Southwest AirlinesOn-time77%Medianon timep9035 minCancel1.1%Flights1,021
Why flights run late
Delay causes
- Airline21%
- Weather2%
- Air traffic (NAS)8%
- Late aircraft69%
- Security0%
Most delay minutes here are attributed to Late aircraft.
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 (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 63% to 90% on time.
- Mornings90% on time · p90 10 min · 412 flights
- Middays89% on time · p90 15 min · 896 flights
- Afternoons75% on time · p90 35 min · 753 flights
- Evenings67% on time · p90 55 min · 188 flights · limited
- Overnights63% on time · p90 55 min · 973 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 67% to 82% on time.
- Tuesdays82% on time · p90 25 min · 493 flights
- Wednesdays80% on time · p90 30 min · 491 flights
- Mondays78% on time · p90 30 min · 493 flights
- Fridays77% on time · p90 35 min · 493 flights
- Saturdays75% on time · p90 40 min · 310 flights
- Thursdays75% on time · p90 35 min · 488 flights
- Sundays67% on time · p90 50 min · 454 flights
Advertisement
Keep exploring