Historical on-time performance
Chicago to Green Bay
173 miData through May 2026Source: US DOT · BTS
Flights on ORD–GRB arrive on time 65% of the time over the last 12 months.
On-time rate65%arrived within 15 min
p90 delay70 min1 in 10 flights is worse (tail risk)
Cancelled4.0%of scheduled flights
based on 2,805 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysOn-time76%Medianon timep9050 minCancel5.2%Flights154
- Envoy AirbestOn-time71%Medianon timep9055 minCancel3.4%Flights1,371
- SkyWest AirlinesOn-time58%Medianon timep90100 minCancel4.5%Flights1,280
Why flights run late
Delay causes
- Airline28%
- Weather13%
- Air traffic (NAS)21%
- Late aircraft38%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather72%
- Air traffic (NAS)28%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 112 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ORD → GRB
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 79% on time.
- Mornings79% on time · p90 30 min · 1,518 flights
- Afternoons69% on time · p90 60 min · 1,410 flights
- Middays68% on time · p90 60 min · 984 flights
- Evenings67% on time · p90 80 min · 1,113 flights
- Overnights66% on time · p90 70 min · 1,124 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 65% to 74% on time.
- Tuesdays74% on time · p90 55 min · 849 flights
- Saturdays74% on time · p90 45 min · 855 flights
- Wednesdays73% on time · p90 55 min · 835 flights
- Mondays70% on time · p90 65 min · 905 flights
- Thursdays69% on time · p90 55 min · 895 flights
- Fridays69% on time · p90 65 min · 900 flights
- Sundays65% on time · p90 75 min · 910 flights
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