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Route Reliability

San Antonio → Salt Lake City

SAT–SLC · 1,087 miles · San Antonio International Airport to Salt Lake City International Airport

90
Nerd Approved
WanderNerd Reliability Score
87%
Arrive within 15 minutes
0 min
Average arrival delay
1.0%
Cancelled
1,008
Flights in the data

Data through May 2026.

Delta Air Lines is the only airline in this data on this route, arriving on time 87% of the time across 1,008 flights. No comparison to make.

What the data says

Morning-you made the right choice.

SAT–SLC flights departing between 6–9 AM arrived on time 95% of the time, versus 80% between 12–3 PM.

Skip Thursday if you can.

SAT–SLC flights arrived on time 89% of the time on Wednesdays. On Thursdays: 82%.

Ticking up lately.

SAT–SLC flights arrived on time 92% of the time over the last three months in the data, compared with 86% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon87%(151 flights)
  • Tue87%(151 flights)
  • Wed89%(149 flights)
  • Thu82%(147 flights)
  • Fri87%(149 flights)
  • Sat89%(104 flights)
  • Sun88%(145 flights)
On-time by departure window
  • 6–9 AM95%(360 flights)
  • 12–3 PM80%(352 flights)
  • 3–6 PM89%(93 flights)
  • 6–9 PM81%(191 flights)
On-time trend by month
92%
May

Jun 82% → May 92% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202582%85
July 202585%88
August 202587%82
September 202576%76
October 202587%84
November 202588%76
December 202582%85
January 202691%86
February 202686%78
March 202694%88
April 202689%82
May 202692%86

Keep nerding

Based on 1,008 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.