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

New Orleans, LA (MSY) to Houston, TX (IAH) flight delay odds

81.7% of 2,961 official scheduled MSY-to-IAH flights arrived on time; 10.7% 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
81.7%arrived on time
10.7%30+ min late
0.5%cancelled
2,961scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.1%all scheduled flights
120+ minutes late3.1%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+3.6 mincompleted flights

Which departure time was most reliable for MSY to IAH?

Among qualifying MSY-to-IAH departure window results, Late morning had the highest on-time rate: 89.1% of 530 flights. Evening was lowest at 73.9% across 728 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning71086.2%6.6%0.7%
Late morning53089.1%7.0%0.2%
Afternoon91579.9%12.9%0.4%
Evening72873.9%14.7%0.7%
Night7884.6%9.0%0.0%

Which weekday was most reliable for MSY to IAH?

Among qualifying MSY-to-IAH weekday results, Tuesday had the highest on-time rate: 85.3% of 416 flights. Sunday was lowest at 77.0% across 439 flights.

DayFlightsOn time30+ minCancelled
Monday44484.2%9.5%0.7%
Tuesday41685.3%6.7%0.5%
Wednesday41484.1%11.4%0.0%
Thursday43879.5%11.2%0.7%
Friday44281.2%11.5%0.2%
Saturday36880.7%11.4%0.8%
Sunday43977.0%13.0%0.7%

Which airline was most reliable for MSY to IAH?

Among qualifying MSY-to-IAH airline results, United Airlines had the highest on-time rate: 82.0% of 2,784 flights. Spirit Airlines was lowest at 77.4% across 146 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines2,78482.0%10.5%0.5%
Spirit Airlines14677.4%13.0%0.7%
Frontier Airlines2777.8%11.1%3.7%
SkyWest Airlines475.0%25.0%0.0%

Which month was most reliable for MSY to IAH?

Among qualifying MSY-to-IAH month results, January 2026 had the highest on-time rate: 91.5% of 235 flights. July 2025 was lowest at 70.7% across 242 flights.

MonthFlightsOn time30+ minCancelled
July 202524270.7%18.2%1.7%
August 202524782.2%10.1%0.4%
September 202528090.4%3.6%0.7%
October 202528681.1%9.8%0.3%
November 202525380.2%13.4%0.0%
December 202522486.2%8.9%0.0%
January 202623591.5%3.4%0.4%
February 202622889.5%6.1%0.0%
March 202625778.6%12.1%1.9%
April 202626983.6%9.7%0.0%
May 202623471.8%18.4%0.0%
June 202620672.8%16.0%0.5%

What drove MSY to IAH delay minutes?

Late aircraft was the largest recorded MSY-to-IAH delay category, accounting for 35.6% of 39,731 BTS-attributed delay minutes during July 2025–June 2026.

Airline21.9%
Late aircraft35.6%
National airspace35.3%
Weather7.2%
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.