Historical on-time performance
Kansas City to Salt Lake City
919 miData through Dec 2025Source: US DOT · BTS
Flights on MCI–SLC arrive on time 85% of the time over the last 12 months.
On-time rate85%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 1,011 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time85%Medianon timep9025 minCancel1.1%Flights1,011
Why flights run late
Delay causes
- Airline29%
- Weather4%
- Air traffic (NAS)16%
- Late aircraft51%
- 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 MCI → SLC
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 84% to 92% on time.
- Mornings92% on time · p90 5 min · 1,095 flights
- Middays85% on time · p90 25 min · 94 flights · limited
- Evenings84% on time · p90 30 min · 986 flights
- Afternoons84% on time · p90 25 min · 806 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 85% to 89% on time.
- Tuesdays89% on time · p90 15 min · 418 flights
- Wednesdays89% on time · p90 15 min · 419 flights
- Fridays88% on time · p90 20 min · 445 flights
- Mondays87% on time · p90 15 min · 455 flights
- Saturdays87% on time · p90 20 min · 355 flights
- Thursdays85% on time · p90 25 min · 445 flights
- Sundays85% on time · p90 25 min · 444 flights
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