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Route · MKE → BWI · 2020–2025 BTS data

Milwaukee to Baltimore

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MKE to BWI (Milwaukee to Baltimore) ranks #2651 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

86.4%
On-time
+7.4 pts
vs US avg
63 min
Delay when late
4,567
Flights
#2651 of 4927
Corpus placement

Cancelled

1.3%

Best Month

Mar 2025 95%

Worst Month

Jan 2024 71%

Distance

641 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 75 12 2 0 WN
Nov 2025 73 15 1 0 WN
Oct 2025 87 9 0 0 WN
Sep 2025 77 8 0 0 WN
Aug 2025 79 15 0 0 WN
Jul 2025 90 19 4 0 NK,WN
Jun 2025 91 16 3 2 WN,NK
May 2025 69 15 1 0 WN,NK
Apr 2025 59 5 0 0 WN
Mar 2025 55 3 2 0 WN
Feb 2025 43 6 0 0 WN
Jan 2025 45 2 4 0 WN
Dec 2024 73 15 0 0 WN
Nov 2024 73 5 0 0 WN
Oct 2024 88 6 1 0 WN
Sep 2024 95 7 1 0 WN
Aug 2024 104 19 0 3 NK,WN
Jul 2024 88 23 1 0 WN
Jun 2024 83 15 0 0 WN
May 2024 61 16 0 0 WN
Apr 2024 59 14 0 0 WN
Mar 2024 57 9 0 0 WN
Feb 2024 54 4 0 0 WN
Jan 2024 59 17 3 0 WN

MKE–BWI seasonal on-time pattern

Best: September (92.3%) · weakest: June (82.5%)

80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 83.9%

Strongest calendar month

September

92.3% on-time · ~74 flights/mo

Busiest calendar month

August

~81 flights/mo avg

Weakest calendar month

June

82.5% on-time · ~73 flights/mo

Cancellation Rate

1.3%

23 of 1,737 flights

Diversion Rate

0.3%

5 of 1,737 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

MKE - Milwaukee

Full on-time, delay-cause, and seasonal performance for Milwaukee, WI.

MKE on-time profile

BWI - Baltimore

Full on-time, delay-cause, and seasonal performance for Baltimore, MD.

BWI on-time profile

Compare the two airports

See MKE and BWI side by side on delays, cancellations, and reliability.

Compare MKE vs BWI

Origin-hub reliability standing

Among MKE's stronger departures

MKE → BWI posts a 86.4% on-time rate, landing in the ≥85% band with 9 of 27 BTS-tracked routes leaving Milwaukee. The same hub also shows 18 mid-band and 0 challenged departures · fleet-wide on-time rank #797 of 4927 (highest on-time = #1).

What the Data Says About MKE to BWI

Milwaukee to Baltimore (MKE to BWI) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.4% on-time rate across 4,567 flights, with delays that do happen averaging 63.1 minutes. The corridor runs roughly 641 miles and is served by 3 carriers. Over the most recent 24 months, 23 of 1,737 flights were cancelled (1.3%) and 5 diverted (0.3%).

The monthly split is wide on this route: Mar 2025 posted the strongest performance at 95% on-time, while Jan 2024 came in at just 71% - a 23-point swing worth factoring into travel timing.

On the multi-year calendar, MKE–BWI peaks in September at 92.3% on-time while August carries the heaviest traffic (~81 flights per month) ; the softest month is June at 82.5%, a 9.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does MKE to BWI rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, MKE to BWI ranks #2651 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from MKE to BWI? ▼
Flights from Milwaukee to Baltimore have a 86.4% on-time rate based on 4,567 flights. The average delay is 63.1 minutes. The best recent month was Mar 2025 with 95% on-time.
What is the cancellation rate for MKE to BWI? ▼
Over the last 24 months, 1.3% of flights on this route were cancelled (23 of 1,737 flights) and 0.3% were diverted.
How far is the flight from MKE to BWI? ▼
The flight distance from Milwaukee (MKE) to Baltimore (BWI) is approximately 641 miles. This route is served by 3 carriers.
When is the best time to fly from MKE to BWI? ▼
The best recent month for on-time performance was Mar 2025 (95% on-time). The worst was Jan 2024 (71% on-time). Consider booking during months with historically better performance.

Airports on this route

MKE Airport

Milwaukee
BWI Airport

Baltimore
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using MKE–BWI data

MKE–BWI runs 7.4 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare MKE and BWI airport profiles: delay causes and top routes differ even on the same corridor. MKE airport
  • If your dates flex, September (92.3% on-time) beats June (82.5%) on this corridor. Seasonal chart
  • 4 other routes post a similar 86.4% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.