Historical on-time performance
Boston to Milwaukee
860 miData through Dec 2025Source: US DOT · BTS
Flights on BOS–MKE arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled2.5%of scheduled flights
based on 646 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-time77%Medianon timep9045 minCancel2.9%Flights523
- JetBlue AirwaysOn-time75%Medianon timep9070 minCancel0.8%Flights123
Why flights run late
Delay causes
- Airline43%
- Weather1%
- Air traffic (NAS)18%
- Late aircraft38%
- 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 BOS → 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 62% to 87% on time.
- Overnights87% on time · p90 5 min · 53 flights · limited
- Mornings84% on time · p90 25 min · 1,296 flights
- Middays82% on time · p90 35 min · 219 flights
- Afternoons80% on time · p90 35 min · 688 flights
- Evenings62% on time · p90 75 min · 311 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 84% on time.
- Tuesdays84% on time · p90 25 min · 378 flights
- Sundays82% on time · p90 35 min · 379 flights
- Saturdays81% on time · p90 35 min · 276 flights
- Wednesdays81% on time · p90 30 min · 379 flights
- Thursdays80% on time · p90 30 min · 384 flights
- Mondays77% on time · p90 50 min · 389 flights
- Fridays75% on time · p90 60 min · 382 flights
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