BOS to MKE flight delays & on-time performance
Nonstop flights from Boston Logan International Airport to General Mitchell International Airport · 860 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BOS or MKE right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Boston (BOS) to Milwaukee (MKE) arrived on time 83% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 3.1% were cancelled, and 6% arrived an hour or more late.
- JetBlue was the most punctual airline here (88% on time); Republic Airways was the least (82%).
- Departures scheduled around 7am did best (94% on time); around 5pm did worst (66%).
- Wednesday was the most reliable day to fly (86% on time) and Friday the least (79%).
- The largest source of delay minutes was late-arriving aircraft (44%).
Which airline is most on time from BOS to MKE?
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 |
|---|---|---|---|---|---|
| JetBlue | 88% | 0.0% | 9 min | 5.8% | 172 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 82% | 4.0% | 11 min | 5.9% | 545 |
| Delta Air Lines | 57% | 4.2% | 41 min | 21.7% | 24 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am90%21 flights
- 7am94%51 flights
- 9am89%204 flights
- 10am86%37 flights
- 11am80%20 flights
- 1pm90%29 flights
- 2pm83%69 flights
- 4pm79%139 flights
- 5pm66%91 flights
- 7pm44%17 flights
- 8pm91%49 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday84%5.2% cancelled
- Tuesday80%3.6% cancelled
- Wednesday86%1.8% cancelled
- Thursday82%2.6% cancelled
- Friday79%0.9% cancelled
- Saturday86%3.8% cancelled
- Sunday82%4.2% 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 aircraft44%
- Airline (crew, maintenance, cleaning, fueling)37%
- Air traffic control & airport congestion19%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion48%
- Airline (crew, maintenance, cleaning, fueling)35%
- Extreme weather17%
- Security0%
BOS to MKE: common questions
- How often are BOS to MKE flights on time?
- 83% 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 Boston to Milwaukee cancelled?
- 3.1% of scheduled flights were cancelled (23 of 741).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 60 min behind schedule on average, and 6.4% of flights were an hour or more late.
- How long is taxi time at BOS?
- Flights on this route spent 22 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MKE to BOS — 72% on time
More flights from Boston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BOS → MKE, nonstop flights by US airlines that report to the DOT. How we calculate this.