Route
GRB → ORD
Austin Straubel International Airport Chicago O'Hare International Airport
How punctual is this route?
- On-time arrivals
- 72.0%
- Less than 15 minutes late
- Cancelled
- 4.4%
- Of scheduled flights
- Average delay when late
- 91 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,723
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 39%
- Air traffic control & airport 28%
- Airline (crew, maintenance, cleaning) 20%
- Extreme weather 12%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 80.3% | 195 |
| October 2025 | 77.7% | 213 |
| November 2025 | 76.7% | 271 |
| December 2025 | 60.3% | 247 |
| January 2026 | 64.0% | 164 |
| February 2026 | 68.5% | 163 |
| March 2026 | 63.5% | 278 |
| April 2026 | 69.7% | 313 |
| May 2026 | 74.9% | 217 |
| June 2026 | 77.8% | 211 |
| July 2026 | 85.1% | 187 |
| August 2026 | 69.1% | 264 |
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 | 77.2% | 3.7% | 77 min |
| SkyWest Airlines | 1,174 | 65.4% | 5.2% | 103 min |
| Republic Airways | 160 | 74.7% | 5.6% | 68 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
OO5285
28% late · 105 flights
-
MQ3570
10% late · 92 flights
-
MQ4121
15% late · 86 flights
-
MQ3918
20% late · 85 flights
-
OO5320
23% late · 82 flights
-
MQ3415
21% late · 76 flights
-
MQ3546
7% late · 62 flights
-
OO5213
20% late · 55 flights
-
MQ3530
20% late · 53 flights
-
OO5363
28% late · 50 flights
-
MQ3543
26% late · 48 flights
-
OO4681
23% late · 47 flights
-
OO4647
37% late · 45 flights
-
MQ3545
27% late · 44 flights
-
MQ3613
26% late · 44 flights
-
MQ3892
16% late · 44 flights
-
MQ3984
9% late · 44 flights
-
OO5365
58% late · 41 flights
-
OO5266
14% late · 36 flights
-
YX3595
28% late · 36 flights
-
MQ3444
39% late · 35 flights
-
MQ3491
40% late · 35 flights
-
MQ3807
27% late · 34 flights
-
OO5211
39% late · 32 flights
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