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

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

Historically, 78.8% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,675 flights.

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

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

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%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

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%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

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

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

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 reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

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.