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Route Reliability

Houston → Salt Lake City

HOU–SLC · 1,214 miles · William P. Hobby Airport to Salt Lake City International Airport

89
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
2 min
Average arrival delay
0.2%
Cancelled
410
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 83% of the time across 410 flights. No comparison to make.

What the data says

The 3–6 PM departure wins.

HOU–SLC flights departing between 3–6 PM arrived on time 90% of the time, versus 57% between 9 PM–12 AM.

Skip Monday if you can.

HOU–SLC flights arrived on time 89% of the time on Thursdays. On Mondays: 77%.

It basically never cancels.

Out of 410 scheduled flights, only 0.2% were cancelled.

Recent months have been rougher.

HOU–SLC flights arrived on time 75% of the time over the last three months in the data, compared with 87% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon77%(52 flights)
  • Tue78%(51 flights)
  • Wed81%(52 flights)
  • Thu89%(52 flights)
  • Fri87%(52 flights)
  • Sat83%(75 flights)
  • Sun84%(74 flights)
On-time by departure window
  • 6–9 AM86%(144 flights)
  • 9 AM–12 PM87%(114 flights)
  • 12–3 PM75%(76 flights)
  • 3–6 PM90%(30 flights)
  • 6–9 PM73%(30 flights)
  • 9 PM–12 AM57%(14 flights)
On-time trend by month
77%
May

Jun 74% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%38
July 202576%38
August 202589%36
September 202597%34
October 202584%31
November 202590%31
December 202590%31
January 202694%35
February 202675%32
March 202674%39
April 202672%32
May 202677%31

Same trip, other airports

Keep nerding

Based on 410 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.