Delta Air Lines BOS to MKE on-time performance
Delta Air Lines nonstop flights from Boston to Milwaukee · Aug 2025 – Jul 2026
On-time arrivals
57%
arrived < 15 min late
Cancelled
4.2%
1 flights
Avg arrival delay
41 min
92 min when late
Rank on route
#3 of 3
route average 83% on time
Key facts
- Delta Air Lines flights on BOS to MKE arrived on time 57% of the time in Aug 2025 – Jul 2026.
- 4.2% were cancelled, and 22% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 83% on time overall.
- The largest source of delay minutes was late-arriving aircraft (57%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft57%
- Airline (crew, maintenance, cleaning, fueling)37%
- Air traffic control & airport congestion7%
- Extreme weather0%
- Security0%
Other airlines on BOS to MKE
- Republic Airways82% on time · 11 min avg delay
- JetBlue88% on time · 9 min avg delay
Full BOS to MKE comparison →
Delta Air Lines on-time record across all routes →
24 Delta Air Lines flights tracked on this route; 1 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.