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Route Reliability

Kansas City → San Antonio

MCI–SAT · 706 miles · Kansas City International Airport to San Antonio International Airport

84
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
9 min
Average arrival delay
0.4%
Cancelled
279
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 77% of the time across 279 flights. No comparison to make.

What the data says

Morning flights do better here.

MCI–SAT flights departing between 9 AM–12 PM arrived on time 100% of the time, versus 68% between 3–6 PM.

Saturdays have been rough.

MCI–SAT flights arrived on time 88% of the time on Tuesdays and just 70% on Saturdays. That gap is worth planning around.

Flights on this route

The breakdown

On-time by weekday
  • Mon71%(45 flights)
  • Tue88%(34 flights)
  • Wed81%(31 flights)
  • Thu79%(42 flights)
  • Fri83%(48 flights)
  • Sat70%(10 flights)
  • Sun71%(68 flights)
On-time by departure window
  • 3–6 AM—(7 flights)
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM100%(34 flights)
  • 12–3 PM80%(128 flights)
  • 3–6 PM68%(100 flights)
  • 6–9 PM—(8 flights)
On-time trend by month
83%
May

Jun 55% → May 83% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202555%31
July 202563%30
August 202585%26
September 2025100%26
October 202584%19
November 2025100%18
December 202553%15
February 202687%15
March 202669%29
April 202680%30
May 202683%30

Keep nerding

Based on 279 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.