BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
SAN→IAH

San Diego, CA (SAN) to Houston, TX (IAH) flight delay odds

83.8% of 1,693 official scheduled SAN-to-IAH flights arrived on time; 9.9% arrived at least 30 minutes late and 0.5% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
83.8%arrived on time
9.9%30+ min late
0.5%cancelled
1,693scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.3%all scheduled flights
120+ minutes late2.4%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+2.7 mincompleted flights

Which departure time was most reliable for SAN to IAH?

Among qualifying SAN-to-IAH departure window results, Early morning had the highest on-time rate: 91.7% of 433 flights. Evening was lowest at 79.0% across 176 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning43391.7%4.8%0.9%
Late morning45584.6%7.9%0.2%
Afternoon62979.0%13.4%0.6%
Evening17679.0%14.8%0.0%

Which weekday was most reliable for SAN to IAH?

Among qualifying SAN-to-IAH weekday results, Tuesday had the highest on-time rate: 87.5% of 224 flights. Thursday was lowest at 81.3% across 252 flights.

DayFlightsOn time30+ minCancelled
Monday25582.4%10.2%0.4%
Tuesday22487.5%7.6%0.4%
Wednesday24683.7%9.8%0.4%
Thursday25281.3%11.5%1.2%
Friday24383.1%10.7%0.4%
Saturday21985.4%7.8%0.5%
Sunday25483.5%11.0%0.4%

Which airline was most reliable for SAN to IAH?

Only United Airlines met the SAN-to-IAH airline threshold: 83.8% of 1,693 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
United Airlines1,69383.8%9.9%0.5%

Which month was most reliable for SAN to IAH?

Among qualifying SAN-to-IAH month results, February 2026 had the highest on-time rate: 91.3% of 127 flights. July 2025 was lowest at 73.0% across 141 flights.

MonthFlightsOn time30+ minCancelled
July 202514173.0%14.9%2.1%
August 202514177.3%13.5%1.4%
September 202513787.6%8.0%0.7%
October 202514789.8%5.4%0.0%
November 202514278.2%12.0%0.0%
December 202514586.2%9.7%0.0%
January 202612888.3%9.4%0.0%
February 202612791.3%3.9%0.0%
March 202615278.9%13.8%1.3%
April 202614290.8%4.9%0.7%
May 202614985.2%11.4%0.0%
June 202614279.6%10.6%0.0%

What drove SAN to IAH delay minutes?

Late aircraft was the largest recorded SAN-to-IAH delay category, accounting for 53.8% of 18,835 BTS-attributed delay minutes during July 2025–June 2026.

Airline15.8%
Late aircraft53.8%
National airspace25.9%
Weather4.4%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.