PlainFlights

Route · MKE → PHL · 2020–2025 BTS data

Milwaukee to Philadelphia

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MKE to PHL (Milwaukee to Philadelphia) ranks #3704 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

84.9%
On-time
+5.9 pts
vs US avg
93 min
Delay when late
2,206
Flights
#3704 of 4927
Corpus placement

Cancelled

2.4%

Best Month

Sep 2022 96%

Worst Month

Aug 2024 63%

Distance

690 mi

Carriers

9

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Oct 2025 79 9 1 0 OH
Sep 2025 41 9 0 0 OH,YX
Aug 2025 79 18 2 0 YX,OH
Jul 2025 31 15 3 0 OH
Jun 2025 36 13 3 1 OH,YX
Oct 2024 70 10 0 0 YX,AA,OH
Aug 2024 70 26 3 0 AA,F9,YX,OH
Jul 2024 98 25 1 0 F9,OH,YX
Jun 2024 88 12 3 0 F9,OH,YX
May 2024 63 11 0 0 F9,YX
Apr 2024 30 4 0 0 OH,YX
Mar 2024 31 4 0 0 OH
Oct 2023 57 5 0 0 AA,OH,YX
Sep 2023 54 12 3 1 AA,OH
Aug 2023 42 6 1 0 OH,YX
Jul 2023 56 10 2 0 YX,OH
Jun 2023 54 6 5 0 OH,YX
Mar 2023 31 7 0 0 OH
Jan 2023 31 4 1 0 OH
Nov 2022 57 6 0 0 OH
Oct 2022 60 5 0 0 OH
Sep 2022 56 2 0 0 OH
Aug 2022 57 5 3 0 OH
Jul 2022 81 9 1 0 OH

MKE–PHL seasonal on-time pattern

Best: October (90.1%) · weakest: July (79.0%)

75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 86.7%

Strongest calendar month

October

90.1% on-time · ~64 flights/mo

Busiest calendar month

May

~64 flights/mo avg

Weakest calendar month

July

79.0% on-time · ~60 flights/mo

Cancellation Rate

2.4%

32 of 1,352 flights

Diversion Rate

0.1%

2 of 1,352 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

PHL - Philadelphia

Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.

PHL on-time profile

Compare the two airports

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

Compare MKE vs PHL

Origin-hub reliability standing

Mid-pack among MKE departures

From MKE, this corridor sits with 18 other 75–85% on-time routes out of 27 tracked departures, not the hub's reliability leaders (9 at ≥85%) and not the softest ( 0 below 75%). Destination: Philadelphia · fleet on-time rank #1265 of 4927.

What the Data Says About MKE to PHL

Bureau of Transportation Statistics records show Milwaukee to Philadelphia (MKE to PHL) running a 84.9% on-time rate over 2,206 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 93.4 minutes. The 690-mile corridor is served by 9 carriers, and over the last 24 months 2.4% of 1,352 flights were cancelled, 0.1% diverted.

The monthly split is wide on this route: Sep 2022 posted the strongest performance at 96% on-time, while Aug 2024 came in at just 63% - a 34-point swing worth factoring into travel timing.

On the multi-year calendar, MKE–PHL peaks in October at 90.1% on-time while May carries the heaviest traffic (~64 flights per month) ; the softest month is July at 79.0%, a 11.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does MKE to PHL rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, MKE to PHL ranks #3704 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 PHL? ▼
Flights from Milwaukee to Philadelphia have a 84.9% on-time rate based on 2,206 flights. The average delay is 93.4 minutes. The best recent month was Sep 2022 with 96% on-time.
What is the cancellation rate for MKE to PHL? ▼
Over the last 24 months, 2.4% of flights on this route were cancelled (32 of 1,352 flights) and 0.1% were diverted.
How far is the flight from MKE to PHL? ▼
The flight distance from Milwaukee (MKE) to Philadelphia (PHL) is approximately 690 miles. This route is served by 9 carriers.
When is the best time to fly from MKE to PHL? ▼
The best recent month for on-time performance was Sep 2022 (96% on-time). The worst was Aug 2024 (63% on-time). Consider booking during months with historically better performance.

Airports on this route

MKE Airport

Milwaukee
PHL Airport

Philadelphia
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–PHL data

MKE–PHL runs 5.9 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 PHL airport profiles: delay causes and top routes differ even on the same corridor. MKE airport
  • If your dates flex, October (90.1% on-time) beats July (79.0%) on this corridor. Seasonal chart
  • 4 other routes post a similar 84.9% 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.