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Route · PIT → MDW · 2020–2025 BTS data

Pittsburgh to Chicago

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), PIT to MDW (Pittsburgh to Chicago) ranks #1820 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

84.1%
On-time
+5.1 pts
vs US avg
58 min
Delay when late
6,929
Flights
#1820 of 4927
Corpus placement

Cancelled

0.8%

Best Month

Feb 2024 94%

Worst Month

Dec 2025 65%

Distance

402 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 89 31 1 0 WN
Nov 2025 85 13 2 0 WN
Oct 2025 114 19 0 0 WN
Sep 2025 112 15 0 0 WN
Aug 2025 113 18 0 2 WN
Jul 2025 105 30 1 0 WN
Jun 2025 102 22 0 0 WN
May 2025 86 18 0 0 WN
Apr 2025 86 12 0 0 WN
Mar 2025 87 9 0 0 WN
Feb 2025 72 14 1 0 WN
Jan 2025 84 21 0 0 WN
Dec 2024 87 20 1 0 WN
Nov 2024 84 6 0 0 WN
Oct 2024 107 16 1 0 WN
Sep 2024 111 11 0 0 WN
Aug 2024 112 15 1 0 WN
Jul 2024 104 19 1 0 WN
Jun 2024 100 29 0 1 WN
May 2024 79 23 0 0 WN
Apr 2024 83 7 0 1 WN
Mar 2024 99 12 0 0 WN
Feb 2024 83 5 0 0 WN
Jan 2024 95 14 10 0 WN

PIT–MDW seasonal on-time pattern

Best: February (90.1%) · weakest: June (76.7%)

75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 80.3%

Strongest calendar month

February

90.1% on-time · ~85 flights/mo

Busiest calendar month

August

~121 flights/mo avg

Weakest calendar month

June

76.7% on-time · ~107 flights/mo

Cancellation Rate

0.8%

19 of 2,279 flights

Diversion Rate

0.2%

4 of 2,279 flights

Explore origin & destination

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

PIT - Pittsburgh

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

PIT on-time profile

MDW - Chicago

Full on-time, delay-cause, and seasonal performance for Chicago, IL.

MDW on-time profile

Compare the two airports

See PIT and MDW side by side on delays, cancellations, and reliability.

Compare PIT vs MDW

Origin-hub reliability standing

Mid-pack among PIT departures

From PIT, this corridor sits with 19 other 75–85% on-time routes out of 33 tracked departures, not the hub's reliability leaders (13 at ≥85%) and not the softest ( 1 below 75%). Destination: Chicago · fleet on-time rank #1547 of 4927.

What the Data Says About PIT to MDW

Bureau of Transportation Statistics records show Pittsburgh to Chicago (PIT to MDW) running a 84.1% on-time rate over 6,929 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 58.4 minutes. The 402-mile corridor is served by 1 carrier, and over the last 24 months 0.8% of 2,279 flights were cancelled, 0.2% diverted.

The monthly split is wide on this route: Feb 2024 posted the strongest performance at 94% on-time, while Dec 2025 came in at just 65% - a 29-point swing worth factoring into travel timing.

On the multi-year calendar, PIT–MDW peaks in February at 90.1% on-time while August carries the heaviest traffic (~121 flights per month) ; the softest month is June at 76.7%, a 13.4-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does PIT to MDW rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, PIT to MDW ranks #1820 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 PIT to MDW? ▼
Flights from Pittsburgh to Chicago have a 84.1% on-time rate based on 6,929 flights. The average delay is 58.4 minutes. The best recent month was Feb 2024 with 94% on-time.
What is the cancellation rate for PIT to MDW? ▼
Over the last 24 months, 0.8% of flights on this route were cancelled (19 of 2,279 flights) and 0.2% were diverted.
How far is the flight from PIT to MDW? ▼
The flight distance from Pittsburgh (PIT) to Chicago (MDW) is approximately 402 miles. This route is served by 1 carrier.
When is the best time to fly from PIT to MDW? ▼
The best recent month for on-time performance was Feb 2024 (94% on-time). The worst was Dec 2025 (65% on-time). Consider booking during months with historically better performance.

Airports on this route

PIT Airport

Pittsburgh
MDW Airport

Chicago
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 PIT–MDW data

PIT–MDW runs 5.1 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare PIT and MDW airport profiles: delay causes and top routes differ even on the same corridor. PIT airport
  • If your dates flex, February (90.1% on-time) beats June (76.7%) on this corridor. Seasonal chart
  • 4 other routes post a similar 84.1% 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.