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

Houston, TX (IAH) to Austin, TX (AUS) flight delay odds

78.8% of 2,675 official scheduled IAH-to-AUS flights arrived on time; 13.7% arrived at least 30 minutes late and 0.8% 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 SIGNALGenerally reliable
78.8%arrived on time
13.7%30+ min late
0.8%cancelled
2,675scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.1%all scheduled flights
120+ minutes late2.9%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+8.0 mincompleted flights

Which departure time was most reliable for IAH to AUS?

Among qualifying IAH-to-AUS departure window results, Early morning had the highest on-time rate: 90.3% of 350 flights. Evening was lowest at 74.0% across 734 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning35090.3%5.4%0.6%
Late morning36885.1%9.0%0.3%
Afternoon91575.2%16.2%0.9%
Evening73474.0%17.4%0.7%
Night30880.2%12.7%1.6%

Which weekday was most reliable for IAH to AUS?

Among qualifying IAH-to-AUS weekday results, Tuesday had the highest on-time rate: 84.2% of 374 flights. Sunday was lowest at 71.7% across 392 flights.

DayFlightsOn time30+ minCancelled
Monday40377.4%13.6%1.0%
Tuesday37484.2%8.8%0.8%
Wednesday38882.5%10.8%0.3%
Thursday39779.8%13.9%0.0%
Friday38978.1%15.2%1.0%
Saturday33277.7%13.0%1.8%
Sunday39271.7%20.4%0.8%

Which airline was most reliable for IAH to AUS?

Among qualifying IAH-to-AUS airline results, SkyWest Airlines had the highest on-time rate: 81.8% of 66 flights. United Airlines was lowest at 78.7% across 2,609 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines2,60978.7%13.7%0.8%
SkyWest Airlines6681.8%13.6%0.0%

Which month was most reliable for IAH to AUS?

Among qualifying IAH-to-AUS month results, February 2026 had the highest on-time rate: 90.1% of 213 flights. July 2025 was lowest at 64.9% across 188 flights.

MonthFlightsOn time30+ minCancelled
July 202518864.9%26.1%0.5%
August 202521476.2%16.4%0.5%
September 202523787.8%6.8%0.0%
October 202523780.2%11.8%0.0%
November 202522271.2%19.8%1.4%
December 202523180.1%10.8%0.0%
January 202623983.3%10.0%2.9%
February 202621390.1%4.7%0.0%
March 202623577.0%16.6%2.6%
April 202623083.9%10.9%0.0%
May 202622874.1%16.2%1.3%
June 202620173.1%17.4%0.0%

What drove IAH to AUS delay minutes?

Late aircraft was the largest recorded IAH-to-AUS delay category, accounting for 35.8% of 35,976 BTS-attributed delay minutes during July 2025–June 2026.

Airline31.7%
Late aircraft35.8%
National airspace25.2%
Weather7.4%
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.