Austin (AUS) to Chicago (ORD): On-Time Performance
Data through July 2026
When you fly AUS to ORD matters as much as anything else about the booking: the route swung from 90% on-time in October 2024 to just 63% in March 2026. Across the full period the route averages 76% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 62%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 1.5%
- Flights/day
- 8.7
- last 12 months
- Duration
- 2h 50m
- scheduled
- Distance
- 977 mi
Best airline from AUS to ORD
6 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 82% | 13 min | 1.4% | 283 |
| United Airlines | 78% | 17 min | 0.9% | 2,880 |
| Southwest Airlines | 76% | 14 min | 0.2% | 572 |
| American Airlines | 74% | 27 min | 2.2% | 2,382 |
| Republic Airways | 73% | 19 min | 4.5% | 133 |
| Frontier Airlines | 61% | 49 min | 4.3% | 162 |
Monthly on-time trend
Best time to fly from AUS to ORD
Aim for departures around 9 a.m. (87% on-time); avoid 6 p.m. departures (55%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 76% | 23 min |
| Tuesdaybest | 81% | 16 min |
| Wednesday | 76% | 20 min |
| Thursday | 76% | 20 min |
| Friday | 73% | 23 min |
| Saturday | 79% | 15 min |
| Sunday | 73% | 28 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft44%
- Airline operations24%
- National airspace system30%
- Weather3%
Frequently asked questions
- How often are flights from AUS to ORD delayed?
- 24% of AUS–ORD flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 21 minutes.
- Which airline is most reliable from AUS to ORD?
- Envoy Air has the best on-time record on this route at 82%, based on 283 flights. 6 airlines flew AUS–ORD frequently enough to compare in this period.
- What is the best time of day to fly from AUS to ORD?
- Departures around 9 a.m. have the best record (87% on-time), while departures around 6 p.m. have the worst (55%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from AUS to ORD?
- The scheduled AUS–ORD flight time averages 2h 50m over 977 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are AUS to ORD flights cancelled?
- 1.5% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from AUS to ORD?
- March 2026 was the roughest month in this dataset, with only 63% of arrivals on time. The best was October 2024 at 90%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 6,434 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.