Historical on-time performance
Atlanta to Salt Lake City
1,589 miData through Dec 2025Source: US DOT · BTS
Flights on ATL–SLC arrive on time 81% of the time over the last 12 months.
On-time rate81%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 2,944 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time81%Medianon timep9040 minCancel0.4%Flights2,944
Why flights run late
Delay causes
- Airline49%
- Weather11%
- Air traffic (NAS)16%
- Late aircraft25%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ATL → SLC
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 90% on time.
- Mornings90% on time · p90 10 min · 1,156 flights
- Middays88% on time · p90 15 min · 2,752 flights
- Afternoons83% on time · p90 25 min · 1,656 flights
- Evenings78% on time · p90 40 min · 2,147 flights
- Overnights72% on time · p90 50 min · 1,229 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 87% on time.
- Tuesdays87% on time · p90 20 min · 1,254 flights
- Wednesdays85% on time · p90 25 min · 1,268 flights
- Saturdays83% on time · p90 25 min · 1,251 flights
- Thursdays83% on time · p90 30 min · 1,279 flights
- Mondays82% on time · p90 25 min · 1,300 flights
- Sundays79% on time · p90 35 min · 1,294 flights
- Fridays79% on time · p90 35 min · 1,294 flights
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