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Route Reliability

Tucson → San Diego

TUS–SAN · 367 miles · Tucson International Airport to San Diego International Airport

85
Pretty Reliable
WanderNerd Reliability Score
79%
Arrive within 15 minutes
5 min
Average arrival delay
0.5%
Cancelled
653
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 79% of the time across 653 flights. No comparison to make.

What the data says

Morning-you made the right choice.

TUS–SAN flights departing between 6–9 AM arrived on time 94% of the time, versus 59% between 6–9 PM.

Friday is doing you no favors.

TUS–SAN flights arrived on time 94% of the time on Saturdays and just 67% on Fridays. That gap is worth planning around.

Recent months have been rougher.

TUS–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%(104 flights)
  • Tue83%(95 flights)
  • Wed87%(95 flights)
  • Thu76%(99 flights)
  • Fri67%(102 flights)
  • Sat94%(52 flights)
  • Sun73%(103 flights)
On-time by departure window
  • 3–6 AM92%(13 flights)
  • 6–9 AM94%(250 flights)
  • 9 AM–12 PM94%(77 flights)
  • 12–3 PM—(6 flights)
  • 3–6 PM65%(92 flights)
  • 6–9 PM59%(212 flights)
On-time trend by month
71%
May

Jun 77% → May 71% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202577%56
July 202579%57
August 202583%48
September 202581%47
October 202575%56
November 202581%53
December 202577%57
January 202685%54
February 202687%52
March 202678%58
April 202673%56
May 202671%56

Keep nerding

Based on 653 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.