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Route Reliability

San Diego → Nashville

SAN–BNA · 1,751 miles · San Diego International Airport to Nashville International Airport

81
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
5 min
Average arrival delay
0.8%
Cancelled
1,037
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 1,037 flights. No comparison to make.

What the data says

The late departure is the smart one here.

SAN–BNA flights departing between 9 PM–12 AM arrived on time 95% of the time, versus 57% between 12–3 PM.

Friday is doing you no favors.

SAN–BNA flights arrived on time 86% of the time on Wednesdays and just 67% on Fridays. That gap is worth planning around.

Recent months have been rougher.

SAN–BNA flights arrived on time 72% of the time over the last three months in the data, compared with 80% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon74%(162 flights)
  • Tue85%(138 flights)
  • Wed86%(135 flights)
  • Thu70%(164 flights)
  • Fri67%(163 flights)
  • Sat85%(122 flights)
  • Sun77%(143 flights)
On-time by departure window
  • 6–9 AM91%(351 flights)
  • 9 AM–12 PM78%(151 flights)
  • 12–3 PM57%(235 flights)
  • 3–6 PM79%(93 flights)
  • 6–9 PM58%(111 flights)
  • 9 PM–12 AM95%(86 flights)
On-time trend by month
65%
May

Jun 70% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202570%81
July 202566%88
August 202589%79
September 202588%77
October 202577%88
November 202583%84
December 202577%90
January 202680%69
February 202684%70
March 202671%102
April 202680%99
May 202665%100

Keep nerding

Based on 1,037 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.