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Route Reliability

Nashville → San Diego

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

80
Pretty Reliable
WanderNerd Reliability Score
78%
Arrive within 15 minutes
3 min
Average arrival delay
0.9%
Cancelled
1,038
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 78% of the time across 1,038 flights. No comparison to make.

What the data says

Morning flights do better here.

BNA–SAN flights departing between 6–9 AM arrived on time 93% of the time, versus 66% between 3–6 PM.

Thursday is the weak spot.

BNA–SAN flights arrived on time 84% of the time on Tuesdays. On Thursdays: 71%.

Recent months have been rougher.

BNA–SAN flights arrived on time 74% of the time over the last three months in the data, compared with 83% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon80%(163 flights)
  • Tue84%(137 flights)
  • Wed82%(136 flights)
  • Thu71%(160 flights)
  • Fri75%(164 flights)
  • Sat79%(120 flights)
  • Sun73%(143 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM93%(336 flights)
  • 9 AM–12 PM82%(74 flights)
  • 12–3 PM74%(162 flights)
  • 3–6 PM66%(129 flights)
  • 6–9 PM67%(319 flights)
  • 9 PM–12 AM—(2 flights)
On-time trend by month
74%
May

Jun 70% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202570%83
July 202575%88
August 202578%78
September 202586%76
October 202577%86
November 202581%84
December 202583%90
January 202688%66
February 202677%70
March 202682%103
April 202666%100
May 202674%99

Keep nerding

Based on 1,038 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.