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

Austin, TX (AUS) to Chicago, IL (ORD) flight delay odds

Historically, 70.0% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 3,166 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
70.0%arrived on time
17.6%30+ min late
2.1%cancelled
3,166scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.8%all scheduled flights
120+ minutes late5.8%all scheduled flights
Diverted0.7%did not reach as scheduled
Average arrival+18.6 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 morning93380.7%9.1%3.2%
Late morning70977.2%13.4%1.7%
Afternoon89864.8%21.8%0.8%
Evening59754.8%28.3%2.3%

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
Monday49768.0%18.9%1.8%
Tuesday43176.3%13.2%1.2%
Wednesday42572.7%16.9%1.2%
Thursday47471.1%15.0%2.1%
Friday48667.1%20.2%3.5%
Saturday38171.4%15.0%2.4%
Sunday47264.8%22.9%2.8%

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 Airlines1,47073.5%14.6%1.0%
American Airlines1,19067.3%20.7%3.1%
Southwest Airlines20768.1%15.5%0.5%
Frontier Airlines11860.2%25.4%5.9%
Republic Airways9565.3%17.9%6.3%
Envoy Air8670.9%20.9%2.3%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202526863.4%20.9%3.0%
August 202526672.6%15.8%3.0%
September 202525877.1%10.5%0.4%
October 202529871.5%16.4%0.3%
November 202525466.9%18.9%3.5%
December 202523872.3%17.6%0.4%
January 202620767.6%19.3%5.3%
February 202621479.0%12.1%0.0%
March 202630260.3%24.8%4.6%
April 202629466.7%19.0%3.4%
May 202629878.5%12.8%0.0%
June 202626966.5%21.6%1.9%

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.

Airline20.4%
Late aircraft43.5%
National airspace34.1%
Weather1.9%
Security0.1%
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.