GRB to ORD flight delays & on-time performance
Nonstop flights from Austin Straubel International Airport to Chicago O'Hare International Airport · 173 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at GRB or ORD right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Green Bay (GRB) to Chicago (ORD) arrived on time 73% 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.
- Envoy Air was the most punctual airline here (78% on time); SkyWest Airlines was the least (66%).
- Departures scheduled around 9am did best (86% on time); around 5pm did worst (49%).
- Saturday was the most reliable day to fly (79% on time) and Friday the least (67%).
- The largest source of delay minutes was late-arriving aircraft (42%).
Which airline is most on time from GRB to ORD?
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 |
|---|---|---|---|---|---|
| Envoy AirRegional airline operating American Eagle flights. | 78% | 3.6% | 17 min | 8.9% | 1,378 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 75% | 5.6% | 17 min | 9.3% | 161 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 66% | 5.3% | 34 min | 15.8% | 1,159 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am81%148 flights
- 6am83%501 flights
- 7am76%87 flights
- 8am74%155 flights
- 9am86%231 flights
- 10am72%294 flights
- 11am75%65 flights
- 12pm78%119 flights
- 1pm72%162 flights
- 2pm63%55 flights
- 3pm68%248 flights
- 4pm72%69 flights
- 5pm49%293 flights
- 6pm63%198 flights
- 8pm59%50 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday75%7.9% cancelled
- Tuesday73%2.7% cancelled
- Wednesday71%4.5% cancelled
- Thursday73%2.3% cancelled
- Friday67%2.8% cancelled
- Saturday79%5.2% cancelled
- Sunday70%5.4% 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 aircraft42%
- Air traffic control & airport congestion25%
- Airline (crew, maintenance, cleaning, fueling)21%
- Extreme weather13%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather73%
- Air traffic control & airport congestion27%
- Airline (crew, maintenance, cleaning, fueling)1%
- Security0%
GRB to ORD: common questions
- How often are GRB to ORD flights on time?
- 73% 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 Green Bay to Chicago 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 84 min behind schedule on average, and 11.9% of flights were an hour or more late.
- How long is taxi time at GRB?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ORD to GRB — 71% on time
More flights from Green Bay
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: GRB → ORD, nonstop flights by US airlines that report to the DOT. How we calculate this.