Historical on-time performance
Dallas to Salt Lake City
999 miData through Dec 2025Source: US DOT · BTS
Flights on DAL–SLC arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights
based on 668 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time76%Medianon timep9040 minCancel0.9%Flights668
Why flights run late
Delay causes
- Airline40%
- Weather6%
- Air traffic (NAS)9%
- Late aircraft45%
- 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 DAL → 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 — 89% on time.
- Mornings89% on time · p90 15 min · 697 flights
- Middays84% on time · p90 20 min · 377 flights
- Afternoons72% on time · p90 30 min · 68 flights · limited
- Evenings67% on time · p90 60 min · 487 flights
- Overnights59% on time · p90 60 min · 423 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 80% on time.
- Wednesdays80% on time · p90 30 min · 288 flights
- Tuesdays79% on time · p90 35 min · 291 flights
- Mondays77% on time · p90 35 min · 298 flights
- Saturdays75% on time · p90 35 min · 272 flights
- Fridays74% on time · p90 35 min · 298 flights
- Thursdays74% on time · p90 55 min · 292 flights
- Sundays73% on time · p90 45 min · 313 flights
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