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Route Reliability

San Francisco → San Antonio

SFO–SAT · 1,482 miles · San Francisco International Airport to San Antonio International Airport

82
Pretty Reliable
WanderNerd Reliability Score
78%
Arrive within 15 minutes
10 min
Average arrival delay
0.2%
Cancelled
434
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 78% of the time across 434 flights. No comparison to make.

What the data says

6–9 PM has a slight edge.

Departures between 6–9 PM arrived on time 80% of the time, against 76% between 6–9 AM.

Thursdays have been rough.

SFO–SAT flights arrived on time 85% of the time on Mondays and just 70% on Thursdays. That gap is worth planning around.

It basically never cancels.

Out of 434 scheduled flights, only 0.2% were cancelled.

Flights on this route

The breakdown

On-time by weekday
  • Mon85%(67 flights)
  • Tue82%(55 flights)
  • Wed77%(61 flights)
  • Thu70%(63 flights)
  • Fri74%(58 flights)
  • Sat82%(56 flights)
  • Sun77%(70 flights)
On-time by departure window
  • 6–9 AM76%(25 flights)
  • 9 AM–12 PM79%(105 flights)
  • 12–3 PM—(9 flights)
  • 3–6 PM78%(209 flights)
  • 6–9 PM80%(45 flights)
  • 9 PM–12 AM78%(37 flights)
On-time trend by month
77%
May

Jun 77% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%30
July 202574%31
August 202568%31
September 202586%35
October 202579%56
November 202576%49
December 202591%46
February 202667%18
March 202682%33
April 202676%50
May 202677%44

Keep nerding

Based on 434 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.