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454 km · Domestic

John Glenn Columbus (CMH) – Chicago Midway (MDW)

In July 2026, 232 flights operated between John Glenn Columbus and Chicago Midway (both directions), and 68.5% 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
January183169▼ 7.7%
February162163▲ 0.6%
March176170▼ 3.4%
April178177▼ 0.6%
May182184▲ 1.1%
June250222▼ 11.2%
July260232▼ 10.8%
August240––
September231––
October238–in progress
November197––
December210––
Year to date (Jan–Jul)1,3911,317▼ 5.3%

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
January86.3%84.0%▼ 2.7%
February90.7%79.8%▼ 12.0%
March75.6%71.2%▼ 5.8%
April84.8%82.5%▼ 2.7%
May80.2%77.7%▼ 3.1%
June67.2%73.0%▲ 8.6%
July66.9%68.5%▲ 2.4%
August83.3%––
September88.7%––
October72.7%–in progress
November82.7%––
December72.4%––
Year-to-date average (Jan–Jul)78.8%76.7%▼ 2.7%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January410▲ 150.0%
February23▲ 50.0%
March28▲ 300.0%
April01–
May00–
June04–
July26▲ 200.0%
August0––
September0––
October0–in progress
November9––
December0––
Year to date (Jan–Jul)1032▲ 220.0%

By direction

CMH → MDW

Scheduled flights
2,225
Flights operated
2,200
Cancelled
25 · 1.1%
On-time departures
79.3%

MDW → CMH

Scheduled flights
2,221
Flights operated
2,194
Cancelled
27 · 1.2%
On-time departures
77.4%

CMH → MDW and MDW → CMH counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 4,446 100.0% 78.4% 52

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 delay10:00–11:001.2min · 224 recorded · 223 measured
Gap to highest-delay hour26.0min10:00 ↔ 20:00
Recorded flights4,446CMH–MDW

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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 94.3% · 389 recorded · 384 measured · Source: the US BTS 07:00 · 91.2% · 276 recorded · 274 measured · Source: the US BTS 08:00 · 92.4% · 238 recorded · 237 measured · Source: the US BTS 09:00 · 87.4% · 291 recorded · 286 measured · Source: the US BTS 10:00 · 94.2% · 224 recorded · 223 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 199 recorded · 197 measured · Source: the US BTS 12:00 · 80.1% · 269 recorded · 266 measured · Source: the US BTS 13:00 · 87.7% · 272 recorded · 269 measured · Source: the US BTS 14:00 · 75.9% · 256 recorded · 253 measured · Source: the US BTS 15:00 · 72.5% · 245 recorded · 240 measured · Source: the US BTS 16:00 · 65.0% · 286 recorded · 283 measured · Source: the US BTS 17:00 · 69.6% · 221 recorded · 220 measured · Source: the US BTS 18:00 · 69.9% · 378 recorded · 372 measured · Source: the US BTS 19:00 · 78.3% · 306 recorded · 299 measured · Source: the US BTS 20:00 · 60.3% · 358 recorded · 358 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 154 recorded · 151 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 84 recorded · 82 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 2.5 min · 389 recorded · 384 measured · Source: the US BTS 07:00 · 1.4 min · 276 recorded · 274 measured · Source: the US BTS 08:00 · 1.9 min · 238 recorded · 237 measured · Source: the US BTS 09:00 · 4.4 min · 291 recorded · 286 measured · Source: the US BTS 10:00 · 1.2 min · 224 recorded · 223 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 199 recorded · 197 measured · Source: the US BTS 12:00 · 10.3 min · 269 recorded · 266 measured · Source: the US BTS 13:00 · 5.4 min · 272 recorded · 269 measured · Source: the US BTS 14:00 · 11.2 min · 256 recorded · 253 measured · Source: the US BTS 15:00 · 12.8 min · 245 recorded · 240 measured · Source: the US BTS 16:00 · 18.2 min · 286 recorded · 283 measured · Source: the US BTS 17:00 · 15.4 min · 221 recorded · 220 measured · Source: the US BTS 18:00 · 14.0 min · 378 recorded · 372 measured · Source: the US BTS 19:00 · 9.8 min · 306 recorded · 299 measured · Source: the US BTS 20:00 · 27.2 min · 358 recorded · 358 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 154 recorded · 151 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 84 recorded · 82 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 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 389 · 389 recorded · 384 measured · Source: the US BTS 07:00 · 276 · 276 recorded · 274 measured · Source: the US BTS 08:00 · 238 · 238 recorded · 237 measured · Source: the US BTS 09:00 · 291 · 291 recorded · 286 measured · Source: the US BTS 10:00 · 224 · 224 recorded · 223 measured · Source: the US BTS 11:00 · 199 · 199 recorded · 197 measured · Source: the US BTS 12:00 · 269 · 269 recorded · 266 measured · Source: the US BTS 13:00 · 272 · 272 recorded · 269 measured · Source: the US BTS 14:00 · 256 · 256 recorded · 253 measured · Source: the US BTS 15:00 · 245 · 245 recorded · 240 measured · Source: the US BTS 16:00 · 286 · 286 recorded · 283 measured · Source: the US BTS 17:00 · 221 · 221 recorded · 220 measured · Source: the US BTS 18:00 · 378 · 378 recorded · 372 measured · Source: the US BTS 19:00 · 306 · 306 recorded · 299 measured · Source: the US BTS 20:00 · 358 · 358 recorded · 358 measured · Source: the US BTS 21:00 · 154 · 154 recorded · 151 measured · Source: the US BTS 22:00 · 84 · 84 recorded · 82 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———
05:00No observations———
06:0094.3%2.5 min384389
07:0091.2%1.4 min274276
08:0092.4%1.9 min237238
09:0087.4%4.4 min286291
10:0094.2%1.2 min223224
11:00Fewer than 200 measured departures—197199
12:0080.1%10.3 min266269
13:0087.7%5.4 min269272
14:0075.9%11.2 min253256
15:0072.5%12.8 min240245
16:0065.0%18.2 min283286
17:0069.6%15.4 min220221
18:0069.9%14.0 min372378
19:0078.3%9.8 min299306
20:0060.3%27.2 min358358
21:00Fewer than 200 measured departures—151154
22:00Fewer than 200 measured departures—8284
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 75.7% · 668 recorded · 657 measured · Source: the US BTS Tuesday · 84.8% · 635 recorded · 631 measured · Source: the US BTS Wednesday · 84.5% · 627 recorded · 619 measured · Source: the US BTS Thursday · 76.7% · 662 recorded · 657 measured · Source: the US BTS Friday · 76.4% · 676 recorded · 673 measured · Source: the US BTS Saturday · 79.6% · 482 recorded · 471 measured · Source: the US BTS Sunday · 72.3% · 696 recorded · 686 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 · 12.5 min · 668 recorded · 657 measured · Source: the US BTS Tuesday · 6.2 min · 635 recorded · 631 measured · Source: the US BTS Wednesday · 7.1 min · 627 recorded · 619 measured · Source: the US BTS Thursday · 12.2 min · 662 recorded · 657 measured · Source: the US BTS Friday · 13.8 min · 676 recorded · 673 measured · Source: the US BTS Saturday · 10.4 min · 482 recorded · 471 measured · Source: the US BTS Sunday · 14.2 min · 696 recorded · 686 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 · 668 · 668 recorded · 657 measured · Source: the US BTS Tuesday · 635 · 635 recorded · 631 measured · Source: the US BTS Wednesday · 627 · 627 recorded · 619 measured · Source: the US BTS Thursday · 662 · 662 recorded · 657 measured · Source: the US BTS Friday · 676 · 676 recorded · 673 measured · Source: the US BTS Saturday · 482 · 482 recorded · 471 measured · Source: the US BTS Sunday · 696 · 696 recorded · 686 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday75.7%12.5 min657668
Tuesday84.8%6.2 min631635
Wednesday84.5%7.1 min619627
Thursday76.7%12.2 min657662
Friday76.4%13.8 min673676
Saturday79.6%10.4 min471482
Sunday72.3%14.2 min686696

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 · 85.2% · 366 recorded · 352 measured · Source: the US BTS Feb · 85.2% · 330 recorded · 325 measured · Source: the US BTS Mar · 73.4% · 356 recorded · 346 measured · Source: the US BTS Apr · 83.7% · 356 recorded · 355 measured · Source: the US BTS May · 79.0% · 366 recorded · 366 measured · Source: the US BTS Jun · 69.9% · 476 recorded · 472 measured · Source: the US BTS Jul · 67.7% · 500 recorded · 492 measured · Source: the US BTS Aug · 83.3% · 240 recorded · 240 measured · Source: the US BTS Sep · 88.7% · 231 recorded · 231 measured · Source: the US BTS Oct · 77.4% · 386 recorded · 385 measured · Source: the US BTS Nov · 84.1% · 417 recorded · 408 measured · Source: the US BTS Dec · 75.4% · 422 recorded · 422 measured · Source: the US BTS

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Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · 4.7 min · 366 recorded · 352 measured · Source: the US BTS Feb · 4.4 min · 330 recorded · 325 measured · Source: the US BTS Mar · 15.6 min · 356 recorded · 346 measured · Source: the US BTS Apr · 8.9 min · 356 recorded · 355 measured · Source: the US BTS May · 10.8 min · 366 recorded · 366 measured · Source: the US BTS Jun · 18.1 min · 476 recorded · 472 measured · Source: the US BTS Jul · 20.4 min · 500 recorded · 492 measured · Source: the US BTS Aug · 10.3 min · 240 recorded · 240 measured · Source: the US BTS Sep · 3.2 min · 231 recorded · 231 measured · Source: the US BTS Oct · 8.3 min · 386 recorded · 385 measured · Source: the US BTS Nov · 5.9 min · 417 recorded · 408 measured · Source: the US BTS Dec · 12.8 min · 422 recorded · 422 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 · 366 · 366 recorded · 352 measured · Source: the US BTS Feb · 330 · 330 recorded · 325 measured · Source: the US BTS Mar · 356 · 356 recorded · 346 measured · Source: the US BTS Apr · 356 · 356 recorded · 355 measured · Source: the US BTS May · 366 · 366 recorded · 366 measured · Source: the US BTS Jun · 476 · 476 recorded · 472 measured · Source: the US BTS Jul · 500 · 500 recorded · 492 measured · Source: the US BTS Aug · 240 · 240 recorded · 240 measured · Source: the US BTS Sep · 231 · 231 recorded · 231 measured · Source: the US BTS Oct · 386 · 386 recorded · 385 measured · Source: the US BTS Nov · 417 · 417 recorded · 408 measured · Source: the US BTS Dec · 422 · 422 recorded · 422 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan85.2%4.7 min352366
Feb85.2%4.4 min325330
Mar73.4%15.6 min346356
Apr83.7%8.9 min355356
May79.0%10.8 min366366
Jun69.9%18.1 min472476
Jul67.7%20.4 min492500
Aug83.3%10.3 min240240
Sep88.7%3.2 min231231
Oct77.4%8.3 min385386
Nov84.1%5.9 min408417
Dec75.4%12.8 min422422

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 77.5% 3,444
  • Delayed >15 min 21.4% 950
  • Cancelled 1.2% 52
  • 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

49
49 of 49
Flight numbersBy direction DeparturesOn time
WN586 CMH → MDW 123 92.6%
WN3693 MDW → CMH 121 76.5%
WN2328 CMH → MDW 105 87.6%
WN4965 MDW → CMH 99 93.9%
WN2064 CMH → MDW 81 80.3%
WN3547 CMH → MDW 67 91.0%
WN2037 CMH → MDW 63 71.0%
WN2077 MDW → CMH 61 57.4%
WN2074 MDW → CMH 60 93.3%
WN2662 MDW → CMH 60 32.2%
WN1197 CMH → MDW 58 96.5%
WN1419 CMH → MDW 58 93.1%
WN1972 MDW → CMH 58 64.9%
WN2684 MDW → CMH 58 87.9%
WN3431 CMH → MDW 58 96.6%
WN2420 CMH → MDW 57 87.7%
WN2205 MDW → CMH 53 86.3%
WN2078 CMH → MDW 51 84.3%
WN277 MDW → CMH 51 94.1%
WN1200 CMH → MDW 50 57.1%
WN126 CMH → MDW 50 71.4%
WN1826 MDW → CMH 50 84.0%
WN4043 MDW → CMH 50 47.9%
WN2262 MDW → CMH 49 81.6%
WN2549 MDW → CMH 49 75.5%
WN3104 CMH → MDW 49 71.4%
WN3155 MDW → CMH 49 89.8%
WN4594 MDW → CMH 49 44.7%
WN1132 CMH → MDW 48 63.8%
WN1254 CMH → MDW 47 95.5%
WN4319 CMH → MDW 46 90.9%
WN1989 MDW → CMH 44 93.0%
WN1199 CMH → MDW 42 67.5%
WN1845 CMH → MDW 42 95.2%
WN2266 MDW → CMH 42 97.6%
WN2484 CMH → MDW 42 85.7%
WN2574 MDW → CMH 42 95.2%
WN3383 MDW → CMH 42 65.9%
WN4093 MDW → CMH 42 90.5%
WN411 MDW → CMH 42 80.5%
WN2015 MDW → CMH 41 97.5%
WN4198 CMH → MDW 35 85.7%
WN114 MDW → CMH 33 78.8%
WN1940 MDW → CMH 33 81.8%
WN1944 MDW → CMH 33 58.1%
WN1946 CMH → MDW 33 54.8%
WN3040 CMH → MDW 33 84.4%
WN3076 CMH → MDW 33 71.9%
WN4533 CMH → MDW 32 84.4%

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 232 −10.8% 6 68.5%
June 2026 222 −11.2% 4 73.0%
May 2026 184 +1.1% 0 77.7%
April 2026 177 −0.6% 1 82.5%
March 2026 170 −3.4% 8 71.2%
February 2026 163 +0.6% 3 79.8%
January 2026 169 −7.7% 10 84.0%
December 2025 210 −0.9% 0 72.4%
November 2025 197 −6.6% 9 82.7%
October 2025 238 +61.9% 0 72.7%
September 2025 231 0 88.7%
August 2025 240 0 83.3%
July 2025 260 2 66.9%
June 2025 250 0 67.2%
May 2025 182 0 80.2%
April 2025 178 0 84.8%
March 2025 176 2 75.6%
February 2025 162 2 90.7%
January 2025 183 4 86.3%
December 2024 212 0 78.3%
November 2024 211 0 85.3%
October 2024 147 1 85.0%

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