Historical on-time performance
Houston to Salt Lake City
1,214 miData through May 2026Source: US DOT · BTS
Flights on HOU–SLC arrive on time 82% of the time over the last 12 months.
On-time rate82%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights
based on 410 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time82%Medianon timep9025 minCancel0.2%Flights410
Why flights run late
Delay causes
- Airline50%
- Weather1%
- Air traffic (NAS)17%
- Late aircraft32%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather0%
- Air traffic (NAS)100%
- Security0%
Most cancellations here are attributed to Air traffic (NAS). Shares are among 1 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 HOU → 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 — 89% on time.
- Mornings89% on time · p90 15 min · 600 flights
- Middays78% on time · p90 30 min · 360 flights
- Afternoons75% on time · p90 35 min · 138 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 81% to 84% on time.
- Thursdays84% on time · p90 25 min · 157 flights · limited
- Tuesdays84% on time · p90 20 min · 156 flights · limited
- Saturdays82% on time · p90 25 min · 207 flights
- Mondays82% on time · p90 25 min · 156 flights · limited
- Wednesdays82% on time · p90 25 min · 156 flights · limited
- Fridays82% on time · p90 30 min · 157 flights · limited
- Sundays81% on time · p90 25 min · 206 flights
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