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646 km · Domestic

Chicago Midway (MDW) – Pittsburgh (PIT)

In July 2026, 174 flights operated between Chicago Midway and Pittsburgh (both directions), and 75.3% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January163171▲ 4.9%
February141160▲ 13.5%
March171169▼ 1.2%
April172171▼ 0.6%
May172174▲ 1.2%
June204170▼ 16.7%
July209174▼ 16.7%
August223––
September224––
October229–in progress
November164––
December177––
Year to date (Jan–Jul)1,2321,189▼ 3.5%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January88.3%85.4%▼ 3.3%
February88.7%85.6%▼ 3.5%
March81.3%66.9%▼ 17.7%
April86.6%85.4%▼ 1.4%
May82.0%76.4%▼ 6.8%
June72.1%72.9%▲ 1.1%
July67.5%75.3%▲ 11.6%
August83.0%––
September87.5%––
October79.9%–in progress
November79.9%––
December76.3%––
Year-to-date average (Jan–Jul)80.9%78.3%▼ 3.3%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January25▲ 150.0%
February20▼ 100.0%
March39▲ 200.0%
April00–
May00–
June02–
July14▲ 300.0%
August2––
September0––
October0–in progress
November5––
December1––
Year to date (Jan–Jul)820▲ 150.0%

By direction

MDW → PIT

Scheduled flights
1,975
Flights operated
1,951
Cancelled
24 · 1.2%
On-time departures
79.8%

PIT → MDW

Scheduled flights
1,978
Flights operated
1,963
Cancelled
15 · 0.8%
On-time departures
81.8%

MDW → PIT and PIT → MDW counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 3,953 100.0% 80.8% 39

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

Source: the US BTS · Oct 12, 2024 → Jul 31, 2026

Lowest average delay07:00–08:00-0.0min · 294 recorded · 291 measured
Gap to highest-delay hour20.6min07:00 ↔ 20:00
Recorded flights3,953MDW–PIT

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · Fewer than 200 measured departures · 51 recorded · 51 measured · Source: the US BTS 06:00 · 92.6% · 326 recorded · 324 measured · Source: the US BTS 07:00 · 95.2% · 294 recorded · 291 measured · Source: the US BTS 08:00 · 91.5% · 284 recorded · 281 measured · Source: the US BTS 09:00 · 89.5% · 213 recorded · 210 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 189 recorded · 187 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 39 recorded · 39 measured · Source: the US BTS 12:00 · 84.4% · 259 recorded · 257 measured · Source: the US BTS 13:00 · 81.8% · 508 recorded · 501 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 175 recorded · 174 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 133 recorded · 132 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 122 recorded · 122 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 182 recorded · 180 measured · Source: the US BTS 18:00 · 72.1% · 353 recorded · 348 measured · Source: the US BTS 19:00 · 71.6% · 271 recorded · 268 measured · Source: the US BTS 20:00 · 63.8% · 326 recorded · 323 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 171 recorded · 170 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 57 recorded · 56 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · Fewer than 200 measured departures · 51 recorded · 51 measured · Source: the US BTS 06:00 · 4.0 min · 326 recorded · 324 measured · Source: the US BTS 07:00 · -0.0 min · 294 recorded · 291 measured · Source: the US BTS 08:00 · 6.3 min · 284 recorded · 281 measured · Source: the US BTS 09:00 · 4.3 min · 213 recorded · 210 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 189 recorded · 187 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 39 recorded · 39 measured · Source: the US BTS 12:00 · 6.5 min · 259 recorded · 257 measured · Source: the US BTS 13:00 · 11.0 min · 508 recorded · 501 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 175 recorded · 174 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 133 recorded · 132 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 122 recorded · 122 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 182 recorded · 180 measured · Source: the US BTS 18:00 · 14.7 min · 353 recorded · 348 measured · Source: the US BTS 19:00 · 15.6 min · 271 recorded · 268 measured · Source: the US BTS 20:00 · 20.5 min · 326 recorded · 323 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 171 recorded · 170 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 57 recorded · 56 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 51 · 51 recorded · 51 measured · Source: the US BTS 06:00 · 326 · 326 recorded · 324 measured · Source: the US BTS 07:00 · 294 · 294 recorded · 291 measured · Source: the US BTS 08:00 · 284 · 284 recorded · 281 measured · Source: the US BTS 09:00 · 213 · 213 recorded · 210 measured · Source: the US BTS 10:00 · 189 · 189 recorded · 187 measured · Source: the US BTS 11:00 · 39 · 39 recorded · 39 measured · Source: the US BTS 12:00 · 259 · 259 recorded · 257 measured · Source: the US BTS 13:00 · 508 · 508 recorded · 501 measured · Source: the US BTS 14:00 · 175 · 175 recorded · 174 measured · Source: the US BTS 15:00 · 133 · 133 recorded · 132 measured · Source: the US BTS 16:00 · 122 · 122 recorded · 122 measured · Source: the US BTS 17:00 · 182 · 182 recorded · 180 measured · Source: the US BTS 18:00 · 353 · 353 recorded · 348 measured · Source: the US BTS 19:00 · 271 · 271 recorded · 268 measured · Source: the US BTS 20:00 · 326 · 326 recorded · 323 measured · Source: the US BTS 21:00 · 171 · 171 recorded · 170 measured · Source: the US BTS 22:00 · 57 · 57 recorded · 56 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

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View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00Fewer than 200 measured departures—5151
06:0092.6%4.0 min324326
07:0095.2%-0.0 min291294
08:0091.5%6.3 min281284
09:0089.5%4.3 min210213
10:00Fewer than 200 measured departures—187189
11:00Fewer than 200 measured departures—3939
12:0084.4%6.5 min257259
13:0081.8%11.0 min501508
14:00Fewer than 200 measured departures—174175
15:00Fewer than 200 measured departures—132133
16:00Fewer than 200 measured departures—122122
17:00Fewer than 200 measured departures—180182
18:0072.1%14.7 min348353
19:0071.6%15.6 min268271
20:0063.8%20.5 min323326
21:00Fewer than 200 measured departures—170171
22:00Fewer than 200 measured departures—5657
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 77.2% · 603 recorded · 597 measured · Source: the US BTS Tuesday · 86.4% · 583 recorded · 579 measured · Source: the US BTS Wednesday · 86.6% · 588 recorded · 581 measured · Source: the US BTS Thursday · 78.1% · 601 recorded · 598 measured · Source: the US BTS Friday · 81.2% · 606 recorded · 601 measured · Source: the US BTS Saturday · 81.6% · 394 recorded · 391 measured · Source: the US BTS Sunday · 74.6% · 578 recorded · 567 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Monday · 13.3 min · 603 recorded · 597 measured · Source: the US BTS Tuesday · 5.2 min · 583 recorded · 579 measured · Source: the US BTS Wednesday · 6.3 min · 588 recorded · 581 measured · Source: the US BTS Thursday · 11.2 min · 601 recorded · 598 measured · Source: the US BTS Friday · 10.3 min · 606 recorded · 601 measured · Source: the US BTS Saturday · 8.8 min · 394 recorded · 391 measured · Source: the US BTS Sunday · 16.5 min · 578 recorded · 567 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 603 · 603 recorded · 597 measured · Source: the US BTS Tuesday · 583 · 583 recorded · 579 measured · Source: the US BTS Wednesday · 588 · 588 recorded · 581 measured · Source: the US BTS Thursday · 601 · 601 recorded · 598 measured · Source: the US BTS Friday · 606 · 606 recorded · 601 measured · Source: the US BTS Saturday · 394 · 394 recorded · 391 measured · Source: the US BTS Sunday · 578 · 578 recorded · 567 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday77.2%13.3 min597603
Tuesday86.4%5.2 min579583
Wednesday86.6%6.3 min581588
Thursday78.1%11.2 min598601
Friday81.2%10.3 min601606
Saturday81.6%8.8 min391394
Sunday74.6%16.5 min567578

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Jan · 86.8% · 341 recorded · 334 measured · Source: the US BTS Feb · 87.0% · 303 recorded · 301 measured · Source: the US BTS Mar · 74.1% · 352 recorded · 340 measured · Source: the US BTS Apr · 86.0% · 343 recorded · 343 measured · Source: the US BTS May · 79.2% · 346 recorded · 346 measured · Source: the US BTS Jun · 72.5% · 376 recorded · 374 measured · Source: the US BTS Jul · 71.0% · 388 recorded · 383 measured · Source: the US BTS Aug · 83.0% · 225 recorded · 223 measured · Source: the US BTS Sep · 87.5% · 224 recorded · 224 measured · Source: the US BTS Oct · 83.4% · 363 recorded · 362 measured · Source: the US BTS Nov · 85.3% · 338 recorded · 333 measured · Source: the US BTS Dec · 79.2% · 354 recorded · 351 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · 6.6 min · 341 recorded · 334 measured · Source: the US BTS Feb · 5.1 min · 303 recorded · 301 measured · Source: the US BTS Mar · 15.6 min · 352 recorded · 340 measured · Source: the US BTS Apr · 5.6 min · 343 recorded · 343 measured · Source: the US BTS May · 13.0 min · 346 recorded · 346 measured · Source: the US BTS Jun · 17.3 min · 376 recorded · 374 measured · Source: the US BTS Jul · 18.0 min · 388 recorded · 383 measured · Source: the US BTS Aug · 10.2 min · 225 recorded · 223 measured · Source: the US BTS Sep · 3.8 min · 224 recorded · 224 measured · Source: the US BTS Oct · 8.0 min · 363 recorded · 362 measured · Source: the US BTS Nov · 6.1 min · 338 recorded · 333 measured · Source: the US BTS Dec · 9.6 min · 354 recorded · 351 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 341 · 341 recorded · 334 measured · Source: the US BTS Feb · 303 · 303 recorded · 301 measured · Source: the US BTS Mar · 352 · 352 recorded · 340 measured · Source: the US BTS Apr · 343 · 343 recorded · 343 measured · Source: the US BTS May · 346 · 346 recorded · 346 measured · Source: the US BTS Jun · 376 · 376 recorded · 374 measured · Source: the US BTS Jul · 388 · 388 recorded · 383 measured · Source: the US BTS Aug · 225 · 225 recorded · 223 measured · Source: the US BTS Sep · 224 · 224 recorded · 224 measured · Source: the US BTS Oct · 363 · 363 recorded · 362 measured · Source: the US BTS Nov · 338 · 338 recorded · 333 measured · Source: the US BTS Dec · 354 · 354 recorded · 351 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan86.8%6.6 min334341
Feb87.0%5.1 min301303
Mar74.1%15.6 min340352
Apr86.0%5.6 min343343
May79.2%13.0 min346346
Jun72.5%17.3 min374376
Jul71.0%18.0 min383388
Aug83.0%10.2 min223225
Sep87.5%3.8 min224224
Oct83.4%8.0 min362363
Nov85.3%6.1 min333338
Dec79.2%9.6 min351354

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

  • On time 80.0% 3,161
  • Delayed >15 min 19.0% 753
  • Cancelled 1.0% 39
  • Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Flight numbers on this route

54
54 of 54
Flight numbersBy direction DeparturesOn time
WN3122 PIT → MDW 119 83.2%
WN611 PIT → MDW 109 89.8%
WN2597 MDW → PIT 88 78.2%
WN3286 PIT → MDW 77 85.7%
WN2365 PIT → MDW 76 77.3%
WN971 MDW → PIT 71 92.9%
WN2544 MDW → PIT 65 89.1%
WN2081 MDW → PIT 61 88.5%
WN2489 PIT → MDW 60 91.7%
WN4828 MDW → PIT 60 48.3%
WN1181 MDW → PIT 58 79.3%
WN2593 PIT → MDW 58 98.3%
WN3264 PIT → MDW 58 93.1%
WN3940 PIT → MDW 58 91.4%
WN846 MDW → PIT 58 94.8%
WN1348 PIT → MDW 57 80.7%
WN1580 PIT → MDW 57 73.7%
WN2360 MDW → PIT 57 77.2%
WN4211 MDW → PIT 56 40.7%
WN2155 MDW → PIT 55 83.0%
WN2455 MDW → PIT 52 69.2%
WN2726 PIT → MDW 51 52.9%
WN1052 PIT → MDW 50 92.0%
WN1399 MDW → PIT 50 90.0%
WN2101 MDW → PIT 50 90.0%
WN4132 PIT → MDW 50 88.0%
WN1125 MDW → PIT 49 75.5%
WN1360 PIT → MDW 49 65.3%
WN3245 MDW → PIT 47 85.1%
WN3177 MDW → PIT 46 76.1%
WN3634 PIT → MDW 46 78.3%
WN1169 MDW → PIT 42 92.9%
WN2611 PIT → MDW 42 83.3%
WN2865 MDW → PIT 42 87.5%
WN2866 MDW → PIT 42 75.6%
WN4073 PIT → MDW 42 68.3%
WN3378 PIT → MDW 41 92.7%
WN674 MDW → PIT 41 80.5%
WN2928 PIT → MDW 40 70.0%
WN4325 PIT → MDW 36 60.0%
WN667 MDW → PIT 36 97.2%
WN1186 MDW → PIT 33 63.6%
WN1300 PIT → MDW 33 90.9%
WN1905 MDW → PIT 33 51.6%
WN2209 PIT → MDW 33 90.3%
WN234 MDW → PIT 33 84.9%
WN2661 MDW → PIT 33 87.1%
WN3199 PIT → MDW 33 90.9%
WN3832 PIT → MDW 33 37.5%
WN585 PIT → MDW 32 81.3%
WN2515 PIT → MDW 31 90.3%
WN3878 MDW → PIT 31 80.7%
WN836 PIT → MDW 31 93.6%
WN2267 MDW → PIT 30 82.8%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 174 −16.7% 4 75.3%
June 2026 170 −16.7% 2 72.9%
May 2026 174 +1.2% 0 76.4%
April 2026 171 −0.6% 0 85.4%
March 2026 169 −1.2% 9 66.9%
February 2026 160 +13.5% 0 85.6%
January 2026 171 +4.9% 5 85.4%
December 2025 177 +1.7% 1 76.3%
November 2025 164 −3.0% 5 79.9%
October 2025 229 +72.2% 0 79.9%
September 2025 224 0 87.5%
August 2025 223 2 83.0%
July 2025 209 1 67.5%
June 2025 204 0 72.1%
May 2025 172 0 82.0%
April 2025 172 0 86.6%
March 2025 171 3 81.3%
February 2025 141 2 88.7%
January 2025 163 2 88.3%
December 2024 174 2 82.2%
November 2024 169 0 90.5%
October 2024 133 1 89.5%

How to read this chart

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