Austin (AUS) to Chicago (ORD): On-Time Performance
Data through May 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 77% 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
- 77%
- arrived <15 min late
- Avg delay
- 20 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 8.7
- last 12 months
- Duration
- 2h 49m
- scheduled
- Distance
- 977 mi
Best airline from AUS to ORD
6 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 81% | 13 min | 1.4% | 287 |
| United Airlines | 79% | 16 min | 0.7% | 2,700 |
| Southwest Airlines | 75% | 15 min | 0.2% | 600 |
| American Airlines | 75% | 25 min | 1.9% | 2,248 |
| 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 7 a.m. (88% on-time); avoid 4 p.m. departures (55%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 22 min |
| Tuesdaybest | 81% | 16 min |
| Wednesday | 77% | 18 min |
| Thursday | 76% | 18 min |
| Friday | 74% | 22 min |
| Saturday | 81% | 13 min |
| Sunday | 72% | 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 operations25%
- National airspace system28%
- 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 2024-06 and 2026-05. The average arrival delay across completed flights was 20 minutes.
- Which airline is most reliable from AUS to ORD?
- Envoy Air has the best on-time record on this route at 81%, based on 287 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 7 a.m. have the best record (88% on-time), while departures around 4 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 49m 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?
- 1.3% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, 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 6,152 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.