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

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

Historically, 74.6% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,674 flights.

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

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 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%

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
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%

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 Airlines2,60874.5%12.5%1.3%
SkyWest Airlines6677.3%15.2%0.0%

Monthly trend

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

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 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.

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.