Historical on-time performance
Chicago to Milwaukee
67 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–MKE arrive on time 65% of the time over the last 12 months.
On-time rate65%arrived within 15 min
p90 delay90 min1 in 10 flights is worse (tail risk)
Cancelled3.0%of scheduled flights
based on 4,163 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Republic AirwaysOn-time73%Medianon timep9040 minCancel11.7%Flights60
- SkyWest AirlinesOn-time65%Medianon timep9090 minCancel2.9%Flights4,103
Why flights run late
Delay causes
- Airline46%
- Weather13%
- Air traffic (NAS)17%
- Late aircraft24%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ORD → MKE
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 66% to 75% on time.
- Middays75% on time · p90 55 min · 1,606 flights
- Mornings74% on time · p90 45 min · 978 flights
- Afternoons69% on time · p90 70 min · 2,265 flights
- Overnights68% on time · p90 75 min · 1,802 flights
- Evenings66% on time · p90 85 min · 2,050 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 65% to 75% on time.
- Tuesdays75% on time · p90 65 min · 1,238 flights
- Saturdays73% on time · p90 55 min · 1,193 flights
- Wednesdays72% on time · p90 60 min · 1,245 flights
- Thursdays70% on time · p90 65 min · 1,243 flights
- Mondays68% on time · p90 75 min · 1,278 flights
- Fridays66% on time · p90 75 min · 1,254 flights
- Sundays65% on time · p90 100 min · 1,250 flights
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