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Route Reliability

Nashville → San Antonio

BNA–SAT · 822 miles · Nashville International Airport to San Antonio International Airport

85
Pretty Reliable
WanderNerd Reliability Score
80%
Arrive within 15 minutes
2 min
Average arrival delay
0.6%
Cancelled
953
Flights in the data

Data through May 2026.

Airlines on this route

  • Southwest Airlines81% on time · 932 flights
  • Spirit Airlines50% on time · 21 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning flights do better here.

BNA–SAT flights departing between 6–9 AM arrived on time 95% of the time, versus 66% between 3–6 PM.

Thursdays have been rough.

BNA–SAT flights arrived on time 89% of the time on Wednesdays and just 73% on Thursdays. That gap is worth planning around.

Flights on this route

The breakdown

On-time by weekday
  • Mon75%(145 flights)
  • Tue89%(124 flights)
  • Wed89%(120 flights)
  • Thu73%(154 flights)
  • Fri80%(148 flights)
  • Sat88%(107 flights)
  • Sun74%(147 flights)
On-time by departure window
  • 6–9 AM95%(362 flights)
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM71%(95 flights)
  • 3–6 PM66%(128 flights)
  • 6–9 PM82%(130 flights)
  • 9 PM–12 AM69%(229 flights)
On-time trend by month
69%
May

Jun 66% → May 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%87
July 202568%87
August 202581%78
September 202584%73
October 202584%87
November 202586%76
December 202577%77
January 202684%63
February 202689%63
March 202696%81
April 202687%85
May 202669%88

Keep nerding

Based on 953 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.