Route on-time record
MKE to BOS: most on-time flights and the best time to fly
Milwaukee (General Mitchell International Airport) to Boston (Boston Logan International Airport). 743 nonstop flights in Jun 2025 to May 2026, 68% arrived within 15 minutes and 3.0% were cancelled. The most reliable flight number was Republic 5619 at 7:25 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
MKE → BOS
Milwaukee to Boston: 743 nonstop flights a year
On time (12 months)
68%
Cancelled
3.0%
avg delay 22 min
Best time to leave
Noon to 3 PM
85% on time vs 51% 3 to 6 PM
Most reliable airline
Republic
70% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Republic 5619 · sold as American Eagle, Delta Connection or United Express
7:25 PM → 10:41 PM2h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31.
72%
chance on time
- On time (history)
- 74%
- Cancelled
- 4.4%
- Avg arrival delay
- 20 min
- Arrived on time 74% of the time (217 flights, Jun 2025 to May 2026).
- Cancelled 4.4% of the time (10 of 227).
- 51% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 217 flights
Find 7:25 PM flight fares Opens this date on Aviasales#2 · Republic 5614 · sold as American Eagle, Delta Connection or United Express
12:27 PM → 3:44 PM2h 24m nonstop
Local times, typical schedule. Last flown 2026-05-30.
67%
chance on time
- On time (history)
- 67%
- Cancelled
- 2.2%
- Avg arrival delay
- 21 min
- Arrived on time 67% of the time (227 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Noon to 3 PM: 85% on time; 3 to 6 PM: 51%).
- Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
Strong track record · 227 flights
Find 12:27 PM flight fares Opens this date on Aviasales#3 · JetBlue 2230
8:41 AM → 12:00 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
57%
chance on time
- On time (history)
- 56%
- Cancelled
- 0.8%
- Avg arrival delay
- 30 min
- Arrived on time 56% of the time (125 flights, Jun 2025 to May 2026).
- Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
Moderate track record · 125 flights
Find JetBlue 2230 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Republic Airways (sold as American Eagle, Delta Connection or United Express)70%
554 flights · 73% on time as flown · 3.5% cancel
- JetBlue58%
172 flights · 54% on time as flown · 1.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM79%
86 flights · avg delay 11 min
- 9 AM to noon63%
189 flights · avg delay 24 min
- Noon to 3 PM85%
83 flights · avg delay 13 min
- 3 to 6 PM51%
162 flights · avg delay 33 min
- 6 to 9 PM75%
223 flights · avg delay 20 min
Best day: Saturday (84%). Worst: Thursday (72%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Air traffic control and airport volume44%
- Late-arriving aircraft26%
- Airline (crew, maintenance, boarding)26%
- Severe weather5%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
MKE to BOS questions
- What time of day is best to fly MKE to BOS?
- Noon to 3 PM: 85% of flights arrived on time, against 51% for departures 3 to 6 PM.
- Which airline is most on time from MKE to BOS?
- Republic, with a season-adjusted 70% chance of operating and arriving on time over 554 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on MKE to BOS?
- September (63% on time); the best was February (91%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from MKE
- BOS to MKE (return)
- MKE to ORD 67%
- MKE to DEN 78%
- MKE to ATL 89%
- MKE to DTW 81%
- MKE to PHX 79%
- MKE to MSP 82%
- MKE to MCO 76%
- MKE to DCA 75%
- MKE to LAS 82%
- MKE to DFW 74%
- MKE to BNA 82%
- MKE to CLT 79%
Most on-time flights from MKE on every route →
Live status: FAA delays and ground stops