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Route Reliability

San Antonio → San Diego

SAT–SAN · 1,129 miles · San Antonio International Airport to San Diego International Airport

84
Pretty Reliable
WanderNerd Reliability Score
79%
Arrive within 15 minutes
4 min
Average arrival delay
0.3%
Cancelled
609
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 79% of the time across 609 flights. No comparison to make.

What the data says

Morning-you made the right choice.

SAT–SAN flights departing between 9 AM–12 PM arrived on time 94% of the time, versus 59% between 6–9 PM.

Sunday scaries are real for this one.

SAT–SAN flights arrived on time 85% of the time on Saturdays. On Sundays: 70%.

It basically never cancels.

Out of 609 scheduled flights, only 0.3% were cancelled.

Ticking up lately.

SAT–SAN flights arrived on time 82% of the time over the last three months in the data, compared with 77% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon82%(92 flights)
  • Tue84%(87 flights)
  • Wed85%(85 flights)
  • Thu76%(91 flights)
  • Fri77%(90 flights)
  • Sat85%(66 flights)
  • Sun70%(93 flights)
On-time by departure window
  • 6–9 AM94%(283 flights)
  • 9 AM–12 PM94%(35 flights)
  • 12–3 PM—(2 flights)
  • 3–6 PM76%(74 flights)
  • 6–9 PM59%(209 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
75%
May

Jun 68% → May 75% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%59
July 202572%61
August 202586%57
September 202582%55
October 202581%57
November 202585%54
December 202576%59
January 202661%18
February 202695%19
March 202690%52
April 202680%56
May 202675%57

Keep nerding

Based on 609 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.