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

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

70.0% of 3,166 official scheduled AUS-to-ORD flights arrived on time; 17.6% arrived at least 30 minutes late and 2.1% 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
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

Which departure time was most reliable for AUS to ORD?

Among qualifying AUS-to-ORD departure window results, Early morning had the highest on-time rate: 80.7% of 933 flights. Evening was lowest at 54.8% across 597 flights.

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%

Which weekday was most reliable for AUS to ORD?

Among qualifying AUS-to-ORD weekday results, Tuesday had the highest on-time rate: 76.3% of 431 flights. Sunday was lowest at 64.8% across 472 flights.

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%

Which airline was most reliable for AUS to ORD?

Among qualifying AUS-to-ORD airline results, United Airlines had the highest on-time rate: 73.5% of 1,470 flights. Frontier Airlines was lowest at 60.2% across 118 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%

Which month was most reliable for AUS to ORD?

Among qualifying AUS-to-ORD month results, February 2026 had the highest on-time rate: 79.0% of 214 flights. March 2026 was lowest at 60.3% across 302 flights.

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 AUS to ORD delay minutes?

Late aircraft was the largest recorded AUS-to-ORD delay category, accounting for 43.5% of 77,574 BTS-attributed delay minutes during July 2025–June 2026.

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.