ORD to GRB flight delays & on-time performance
Nonstop flights from Chicago O'Hare International Airport to Austin Straubel International Airport · 173 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ORD or GRB right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Chicago (ORD) to Green Bay (GRB) arrived on time 71% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 4.4% were cancelled, and 12% arrived an hour or more late.
- Republic Airways was the most punctual airline here (80% on time); SkyWest Airlines was the least (62%).
- Departures scheduled around 10am did best (85% on time); around 5pm did worst (50%).
- Saturday was the most reliable day to fly (75% on time) and Sunday the least (68%).
- The largest source of delay minutes was late-arriving aircraft (38%).
Which airline is most on time from ORD to GRB?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 80% | 5.0% | 23 min | 10.5% | 161 |
| Envoy AirRegional airline operating American Eagle flights. | 76% | 3.6% | 17 min | 8.5% | 1,378 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 62% | 5.3% | 34 min | 16.7% | 1,159 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am82%530 flights
- 9am77%58 flights
- 10am85%132 flights
- 11am76%149 flights
- 12pm64%49 flights
- 1pm72%276 flights
- 3pm63%398 flights
- 4pm72%113 flights
- 5pm50%186 flights
- 6pm66%166 flights
- 7pm67%62 flights
- 8pm65%233 flights
- 9pm57%36 flights
- 10pm69%233 flights
- 11pm80%61 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday71%7.6% cancelled
- Tuesday72%3.0% cancelled
- Wednesday71%3.4% cancelled
- Thursday69%2.8% cancelled
- Friday68%3.0% cancelled
- Saturday75%5.9% cancelled
- Sunday68%5.1% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft38%
- Airline (crew, maintenance, cleaning, fueling)28%
- Air traffic control & airport congestion20%
- Extreme weather14%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather73%
- Air traffic control & airport congestion28%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
ORD to GRB: common questions
- How often are ORD to GRB flights on time?
- 71% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Chicago to Green Bay cancelled?
- 4.4% of scheduled flights were cancelled (120 of 2,698).
- How long are typical delays?
- Across all flights the average arrival delay was 24 min (early arrivals count as zero). Flights that were late arrived 79 min behind schedule on average, and 12.1% of flights were an hour or more late.
- How long is taxi time at ORD?
- Flights on this route spent 30 min taxiing from the gate to takeoff on average.
Related routes
Return trip: GRB to ORD — 73% on time
More flights from Chicago
More flights to Green Bay
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ORD → GRB, nonstop flights by US airlines that report to the DOT. How we calculate this.