Historical on-time performance
Kansas City to Salt Lake City
919 miData through May 2026Source: US DOT · BTS
Flights on MCI–SLC arrive on time 86% of the time over the last 12 months.
On-time rate86%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights
based on 1,015 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time86%Medianon timep9020 minCancel1.2%Flights1,015
Why flights run late
Delay causes
- Airline34%
- Weather2%
- Air traffic (NAS)14%
- Late aircraft49%
- Security0%
Most delay minutes here are attributed to Late aircraft.
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 12 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 → SLC
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 — 91% on time.
- Mornings91% on time · p90 5 min · 1,095 flights
- Afternoons86% on time · p90 20 min · 845 flights
- Evenings84% on time · p90 30 min · 909 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 85% to 90% on time.
- Tuesdays90% on time · p90 10 min · 410 flights
- Wednesdays90% on time · p90 15 min · 410 flights
- Fridays89% on time · p90 15 min · 444 flights
- Thursdays87% on time · p90 20 min · 442 flights
- Saturdays87% on time · p90 15 min · 358 flights
- Mondays85% on time · p90 25 min · 446 flights
- Sundays85% on time · p90 20 min · 442 flights
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