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Route Reliability

San Diego → Houston

SAN–IAH · 1,303 miles · San Diego International Airport to George Bush Intercontinental Airport

88
Pretty Reliable
WanderNerd Reliability Score
85%
Arrive within 15 minutes
3 min
Average arrival delay
0.7%
Cancelled
1,692
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 85% of the time across 1,692 flights. No comparison to make.

What the data says

Morning-you made the right choice.

SAN–IAH flights departing between 6–9 AM arrived on time 93% of the time, versus 65% between 6–9 PM.

Skip Monday if you can.

SAN–IAH flights arrived on time 89% of the time on Tuesdays. On Mondays: 82%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon82%(253 flights)
  • Tue89%(214 flights)
  • Wed85%(243 flights)
  • Thu83%(248 flights)
  • Fri85%(245 flights)
  • Sat86%(216 flights)
  • Sun83%(256 flights)
On-time by departure window
  • 6–9 AM93%(427 flights)
  • 9 AM–12 PM87%(450 flights)
  • 12–3 PM80%(406 flights)
  • 3–6 PM80%(343 flights)
  • 6–9 PM65%(49 flights)
On-time trend by month
85%
May

Jun 78% → May 85% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202578%138
July 202577%136
August 202579%139
September 202588%136
October 202591%147
November 202578%142
December 202586%145
January 202688%128
February 202692%126
March 202681%149
April 202693%140
May 202685%149

Same trip, other airports

Keep nerding

Based on 1,692 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.