Route
AUS → ORD
Austin Bergstrom International Airport Chicago O'Hare International Airport
How punctual is this route?
- On-time arrivals
- 72.4%
- Less than 15 minutes late
- Cancelled
- 2.1%
- Of scheduled flights
- Average delay when late
- 97 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,182
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 44%
- Air traffic control & airport 35%
- Airline (crew, maintenance, cleaning) 20%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 77.4% | 258 |
| October 2025 | 71.7% | 298 |
| November 2025 | 70.0% | 254 |
| December 2025 | 72.6% | 238 |
| January 2026 | 71.8% | 207 |
| February 2026 | 79.0% | 214 |
| March 2026 | 64.5% | 302 |
| April 2026 | 69.8% | 294 |
| May 2026 | 79.1% | 298 |
| June 2026 | 68.3% | 269 |
| July 2026 | 74.3% | 273 |
| August 2026 | 71.8% | 277 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 1,549 | 74.1% | 1.3% | 88 min |
| American Airlines | 1,206 | 70.7% | 2.7% | 111 min |
| Southwest Airlines | 145 | 72.2% | 0.7% | 67 min |
| Frontier Airlines | 101 | 69.9% | 5.9% | 162 min |
| Republic Airways | 95 | 69.7% | 6.3% | 73 min |
| Envoy Air | 86 | 72.6% | 2.3% | 65 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1878
11% late · 328 flights
-
AA1726
22% late · 276 flights
-
UA1990
43% late · 255 flights
-
UA456
31% late · 175 flights
-
AA1064
14% late · 165 flights
-
UA1625
35% late · 148 flights
-
UA381
22% late · 138 flights
-
UA2133
20% late · 135 flights
-
AA1574
48% late · 134 flights
-
UA733
48% late · 96 flights
-
F92800
31% late · 86 flights
-
AA1398
39% late · 75 flights
-
AA1568
40% late · 64 flights
-
WN2364
22% late · 49 flights
-
AA2137
20% late · 46 flights
-
AA3255
25% late · 44 flights
-
UA202
10% late · 40 flights
-
MQ3418
29% late · 37 flights
-
UA2042
18% late · 36 flights
-
YX4569
12% late · 36 flights
-
AA2431
27% late · 35 flights
-
AA1833
50% late · 32 flights
-
AA1696
20% late · 31 flights
-
UA276
10% late · 31 flights
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