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

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

74.6% of 2,674 official scheduled AUS-to-IAH flights arrived on time; 12.6% arrived at least 30 minutes late and 1.2% 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
74.6%arrived on time
12.6%30+ min late
1.2%cancelled
2,674scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.5%all scheduled flights
120+ minutes late3.2%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+10.4 mincompleted flights

Which departure time was most reliable for AUS to IAH?

Among qualifying AUS-to-IAH departure window results, Early morning had the highest on-time rate: 78.7% of 714 flights. Afternoon was lowest at 72.5% across 945 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning71478.7%8.4%1.7%
Late morning36275.1%8.0%1.4%
Afternoon94572.5%15.4%1.0%
Evening65372.9%15.5%1.1%

Which weekday was most reliable for AUS to IAH?

Among qualifying AUS-to-IAH weekday results, Saturday had the highest on-time rate: 77.3% of 339 flights. Sunday was lowest at 69.5% across 383 flights.

DayFlightsOn time30+ minCancelled
Monday40472.0%12.4%1.7%
Tuesday37376.9%11.5%1.1%
Wednesday38877.1%11.3%1.0%
Thursday39975.4%14.0%0.5%
Friday38874.5%13.7%1.3%
Saturday33977.3%9.1%1.8%
Sunday38369.5%15.4%1.3%

Which airline was most reliable for AUS to IAH?

Among qualifying AUS-to-IAH airline results, SkyWest Airlines had the highest on-time rate: 77.3% of 66 flights. United Airlines was lowest at 74.5% across 2,608 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines2,60874.5%12.5%1.3%
SkyWest Airlines6677.3%15.2%0.0%

Which month was most reliable for AUS to IAH?

Among qualifying AUS-to-IAH month results, February 2026 had the highest on-time rate: 93.4% of 213 flights. October 2025 was lowest at 62.0% across 237 flights.

MonthFlightsOn time30+ minCancelled
July 202518870.2%19.7%1.1%
August 202521371.4%16.4%1.9%
September 202523776.8%6.8%0.4%
October 202523762.0%16.5%0.0%
November 202522166.5%18.1%1.4%
December 202523281.9%8.2%0.4%
January 202623989.1%2.9%3.3%
February 202621393.4%3.3%0.0%
March 202623572.8%15.3%3.4%
April 202623077.0%13.0%0.9%
May 202622865.4%15.4%1.8%
June 202620167.7%17.4%0.0%

What drove AUS to IAH delay minutes?

National airspace was the largest recorded AUS-to-IAH delay category, accounting for 42.2% of 39,881 BTS-attributed delay minutes during July 2025–June 2026.

Airline20.2%
Late aircraft32.0%
National airspace42.2%
Weather5.6%
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.