Historical on-time performance
Dallas to Salt Lake City
999 miData through May 2026Source: US DOT · BTS
Flights on DAL–SLC arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights
based on 674 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time73%Medianon timep9040 minCancel1.2%Flights674
Why flights run late
Delay causes
- Airline36%
- Weather3%
- Air traffic (NAS)12%
- Late aircraft49%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline25%
- Weather75%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 8 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 DAL → 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 — 88% on time.
- Mornings88% on time · p90 15 min · 705 flights
- Middays83% on time · p90 25 min · 409 flights
- Evenings67% on time · p90 60 min · 479 flights
- Overnights58% on time · p90 60 min · 444 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 80% on time.
- Wednesdays80% on time · p90 35 min · 286 flights
- Tuesdays79% on time · p90 40 min · 290 flights
- Mondays75% on time · p90 40 min · 301 flights
- Fridays75% on time · p90 35 min · 305 flights
- Thursdays74% on time · p90 50 min · 298 flights
- Sundays73% on time · p90 45 min · 325 flights
- Saturdays72% on time · p90 40 min · 286 flights
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