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Route Reliability

San Antonio → Phoenix

SAT–PHX · 843 miles · San Antonio International Airport to Phoenix Sky Harbor International Airport

89
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
5 min
Average arrival delay
0.6%
Cancelled
2,502
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Southwest Airlines85%1,387 flights
  2. 2.American Airlines82%1,050 flights

Not enough history to rank: Frontier Airlines (65 flights). We rank airlines only after 100 flights on the route.

What the data says

Morning-you made the right choice.

SAT–PHX flights departing between 3–6 AM arrived on time 98% of the time, versus 70% between 3–6 PM.

Sunday scaries are real for this one.

SAT–PHX flights arrived on time 90% of the time on Tuesdays. On Sundays: 77%.

Southwest Airlines has a slight edge here.

Southwest Airlines arrived on time 85% of the time on this route; American Airlines managed 82%.

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
  • Mon81%(391 flights)
  • Tue90%(335 flights)
  • Wed86%(337 flights)
  • Thu81%(388 flights)
  • Fri85%(384 flights)
  • Sat86%(269 flights)
  • Sun77%(381 flights)
On-time by departure window
  • 3–6 AM98%(52 flights)
  • 6–9 AM94%(609 flights)
  • 9 AM–12 PM88%(420 flights)
  • 12–3 PM86%(482 flights)
  • 3–6 PM70%(311 flights)
  • 6–9 PM73%(533 flights)
  • 9 PM–12 AM78%(78 flights)
On-time trend by month
82%
May

Jun 71% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202571%190
July 202577%191
August 202583%172
September 202586%168
October 202580%202
November 202583%235
December 202588%252
January 202687%209
February 202688%170
March 202688%235
April 202687%231
May 202682%230

Keep nerding

Based on 2,502 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.