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

Los Angeles, CA (LAX) to Houston, TX (IAH) flight delay odds

83.7% of 5,255 official scheduled LAX-to-IAH flights arrived on time; 9.6% arrived at least 30 minutes late and 0.6% 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
83.7%arrived on time
9.6%30+ min late
0.6%cancelled
5,255scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.1%all scheduled flights
120+ minutes late2.0%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+1.7 mincompleted flights

Which departure time was most reliable for LAX to IAH?

Among qualifying LAX-to-IAH departure window results, Early morning had the highest on-time rate: 91.6% of 1,278 flights. Afternoon was lowest at 75.9% across 1,415 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,27891.6%4.1%0.2%
Late morning1,04584.2%8.9%0.3%
Afternoon1,41575.9%15.1%0.8%
Evening82080.7%12.1%1.0%
Night69787.8%6.3%0.9%

Which weekday was most reliable for LAX to IAH?

Among qualifying LAX-to-IAH weekday results, Thursday had the highest on-time rate: 86.9% of 778 flights. Friday was lowest at 81.3% across 781 flights.

DayFlightsOn time30+ minCancelled
Monday78184.1%10.6%0.6%
Tuesday71984.4%8.9%0.7%
Wednesday73385.9%7.5%0.1%
Thursday77886.9%6.8%0.4%
Friday78181.3%10.8%0.6%
Saturday68381.6%12.0%0.6%
Sunday78081.7%10.4%1.0%

Which airline was most reliable for LAX to IAH?

Among qualifying LAX-to-IAH airline results, United Airlines had the highest on-time rate: 86.5% of 3,415 flights. Frontier Airlines was lowest at 66.6% across 332 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines3,41586.5%7.0%0.3%
Delta Air Lines64584.5%9.3%1.1%
Spirit Airlines45576.3%16.0%1.3%
SkyWest Airlines40881.4%12.7%0.5%
Frontier Airlines33266.6%23.5%2.1%

Which month was most reliable for LAX to IAH?

Among qualifying LAX-to-IAH month results, September 2025 had the highest on-time rate: 92.3% of 439 flights. November 2025 was lowest at 76.7% across 446 flights.

MonthFlightsOn time30+ minCancelled
July 202545377.7%13.7%1.1%
August 202544285.1%8.8%0.7%
September 202543992.3%5.7%0.0%
October 202549387.8%8.1%0.0%
November 202544676.7%12.3%0.4%
December 202544878.3%11.8%0.9%
January 202643785.4%7.8%1.6%
February 202639886.2%8.5%0.3%
March 202644678.3%11.9%1.1%
April 202643687.2%7.8%0.5%
May 202642287.4%7.3%0.0%
June 202639582.5%10.6%0.5%

What drove LAX to IAH delay minutes?

Late aircraft was the largest recorded LAX-to-IAH delay category, accounting for 35.5% of 51,291 BTS-attributed delay minutes during July 2025–June 2026.

Airline35.0%
Late aircraft35.5%
National airspace28.1%
Weather1.4%
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.