Route
ORD → GRB
Chicago O'Hare International Airport Austin Straubel International Airport
How punctual is this route?
- On-time arrivals
- 70.2%
- Less than 15 minutes late
- Cancelled
- 4.3%
- Of scheduled flights
- Average delay when late
- 84 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,724
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 38%
- Airline (crew, maintenance, cleaning) 28%
- Air traffic control & airport 20%
- Extreme weather 15%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 82.7% | 194 |
| October 2025 | 85.4% | 214 |
| November 2025 | 76.6% | 272 |
| December 2025 | 50.8% | 247 |
| January 2026 | 54.7% | 163 |
| February 2026 | 68.5% | 163 |
| March 2026 | 64.7% | 280 |
| April 2026 | 66.3% | 312 |
| May 2026 | 68.7% | 217 |
| June 2026 | 77.3% | 210 |
| July 2026 | 80.0% | 186 |
| August 2026 | 69.4% | 266 |
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 |
|---|---|---|---|---|
| Envoy Air | 1,389 | 75.7% | 3.7% | 70 min |
| SkyWest Airlines | 1,175 | 62.4% | 4.9% | 93 min |
| Republic Airways | 160 | 79.6% | 5.0% | 114 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
MQ3918
19% late · 85 flights
-
OO5907
44% late · 82 flights
-
OO5545
32% late · 81 flights
-
MQ3673
29% late · 79 flights
-
MQ3415
14% late · 76 flights
-
MQ3663
21% late · 76 flights
-
OO5375
12% late · 76 flights
-
MQ3546
5% late · 62 flights
-
OO5839
11% late · 58 flights
-
OO4742
34% late · 50 flights
-
MQ3543
15% late · 48 flights
-
OO5580
37% late · 46 flights
-
OO5476
37% late · 45 flights
-
MQ3613
23% late · 44 flights
-
MQ3614
5% late · 44 flights
-
MQ3633
38% late · 44 flights
-
MQ3545
31% late · 42 flights
-
OO5523
33% late · 41 flights
-
MQ3393
33% late · 36 flights
-
YX3451
14% late · 36 flights
-
MQ3397
41% late · 35 flights
-
OO5547
60% late · 35 flights
-
YX3472
18% late · 35 flights
-
MQ3426
41% late · 34 flights
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