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Route Reliability

Houston → San Diego

HOU–SAN · 1,313 miles · William P. Hobby Airport to San Diego International Airport

81
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
5 min
Average arrival delay
0.7%
Cancelled
958
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 958 flights. No comparison to make.

What the data says

Morning-you made the right choice.

HOU–SAN flights departing between 6–9 AM arrived on time 92% of the time, versus 55% between 9 PM–12 AM.

Sunday scaries are real for this one.

HOU–SAN flights arrived on time 80% of the time on Tuesdays. On Sundays: 73%.

Recent months have been rougher.

HOU–SAN flights arrived on time 73% of the time over the last three months in the data, compared with 84% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon79%(144 flights)
  • Tue80%(137 flights)
  • Wed78%(135 flights)
  • Thu75%(140 flights)
  • Fri80%(142 flights)
  • Sat76%(110 flights)
  • Sun73%(140 flights)
On-time by departure window
  • 3–6 AM86%(29 flights)
  • 6–9 AM92%(296 flights)
  • 9 AM–12 PM89%(65 flights)
  • 12–3 PM70%(164 flights)
  • 3–6 PM73%(135 flights)
  • 6–9 PM69%(184 flights)
  • 9 PM–12 AM55%(75 flights)
On-time trend by month
65%
May

Jun 61% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202561%83
July 202568%88
August 202594%65
September 202583%59
October 202579%86
November 202582%81
December 202576%91
January 202686%71
February 202690%71
March 202683%83
April 202671%85
May 202665%85

Same trip, other airports

Keep nerding

Based on 958 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.