BWI to MKE flight delays & on-time performance
Nonstop flights from Baltimore/Washington International Thurgood Marshall Airport to General Mitchell International Airport · 641 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BWI or MKE right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Baltimore (BWI) to Milwaukee (MKE) arrived on time 76% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2% were cancelled, and 6% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 8am did best (94% on time); around 6pm did worst (41%).
- Tuesday was the most reliable day to fly (83% on time) and Sunday the least (67%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (43%).
Which airline is most on time from BWI 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 |
|---|---|---|---|---|---|
| Southwest Airlines | 76% | 2.0% | 14 min | 6.2% | 830 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am94%138 flights
- 9am83%40 flights
- 10am87%124 flights
- 11am77%41 flights
- 12pm89%10 flights
- 2pm87%40 flights
- 3pm73%60 flights
- 4pm79%14 flights
- 5pm36%11 flights
- 6pm41%31 flights
- 7pm71%15 flights
- 8pm70%68 flights
- 9pm72%115 flights
- 10pm59%120 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday77%3.1% cancelled
- Tuesday83%0.0% cancelled
- Wednesday82%0.9% cancelled
- Thursday74%0.8% cancelled
- Friday79%4.5% cancelled
- Saturday72%1.1% cancelled
- Sunday67%3.2% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)43%
- Late-arriving aircraft41%
- Air traffic control & airport congestion12%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather65%
- Airline (crew, maintenance, cleaning, fueling)29%
- Air traffic control & airport congestion6%
- Security0%
BWI to MKE: common questions
- How often are BWI to MKE flights on time?
- 76% 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 Baltimore to Milwaukee cancelled?
- 2.0% of scheduled flights were cancelled (17 of 830).
- How long are typical delays?
- Across all flights the average arrival delay was 14 min (early arrivals count as zero). Flights that were late arrived 54 min behind schedule on average, and 6.2% of flights were an hour or more late.
- How long is taxi time at BWI?
- Flights on this route spent 15 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MKE to BWI — 85% on time
More flights from Baltimore
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BWI → MKE, nonstop flights by US airlines that report to the DOT. How we calculate this.