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2,812 km · Domestic

Los Angeles (LAX) – Chicago Midway (MDW)

In July 2026, 231 flights operated between Los Angeles and Chicago Midway (both directions), and 56.7% 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
January191193▲ 1.0%
February158168▲ 6.3%
March208202▼ 2.9%
April218204▼ 6.4%
May228212▼ 7.0%
June273220▼ 19.4%
July291231▼ 20.6%
August241––
September232––
October238–in progress
November205––
December230––
Year to date (Jan–Jul)1,5671,430▼ 8.7%

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
January83.2%78.2%▼ 6.0%
February86.7%71.4%▼ 17.6%
March84.1%63.9%▼ 24.0%
April85.8%70.1%▼ 18.3%
May75.4%61.3%▼ 18.7%
June67.0%55.5%▼ 17.2%
July63.6%56.7%▼ 10.8%
August75.9%––
September78.4%––
October60.1%–in progress
November75.6%––
December63.5%––
Year-to-date average (Jan–Jul)78.0%65.3%▼ 16.3%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January01–
February10▼ 100.0%
March18▲ 700.0%
April220.0%
May00–
June10▼ 100.0%
July110.0%
August1––
September0––
October0–in progress
November7––
December0––
Year to date (Jan–Jul)612▲ 100.0%

By direction

LAX → MDW

Scheduled flights
2,374
Flights operated
2,364
Cancelled
10 · 0.4%
On-time departures
74.1%

MDW → LAX

Scheduled flights
2,367
Flights operated
2,350
Cancelled
17 · 0.7%
On-time departures
69.3%

LAX → MDW and MDW → LAX counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 4,741 100.0% 71.7% 27

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 delay05:00–06:002.7min · 464 recorded · 461 measured
Gap to highest-delay hour25.1min05:00 ↔ 21:00
Recorded flights4,741LAX–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 · 91.5% · 464 recorded · 461 measured · Source: the US BTS 06:00 · 94.0% · 433 recorded · 431 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 102 recorded · 102 measured · Source: the US BTS 08:00 · 86.0% · 311 recorded · 308 measured · Source: the US BTS 09:00 · 79.5% · 212 recorded · 210 measured · Source: the US BTS 10:00 · 78.4% · 261 recorded · 259 measured · Source: the US BTS 11:00 · 65.0% · 326 recorded · 326 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 131 recorded · 129 measured · Source: the US BTS 13:00 · 73.6% · 233 recorded · 231 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 127 recorded · 125 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 177 recorded · 176 measured · Source: the US BTS 16:00 · 60.8% · 269 recorded · 268 measured · Source: the US BTS 17:00 · 54.3% · 254 recorded · 254 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 179 recorded · 178 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 109 recorded · 109 measured · Source: the US BTS 20:00 · 68.5% · 206 recorded · 206 measured · Source: the US BTS 21:00 · 50.4% · 273 recorded · 270 measured · Source: the US BTS 22:00 · 58.4% · 232 recorded · 231 measured · Source: the US BTS 23:00 · 78.6% · 442 recorded · 440 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 · 2.7 min · 464 recorded · 461 measured · Source: the US BTS 06:00 · 2.8 min · 433 recorded · 431 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 102 recorded · 102 measured · Source: the US BTS 08:00 · 8.0 min · 311 recorded · 308 measured · Source: the US BTS 09:00 · 11.4 min · 212 recorded · 210 measured · Source: the US BTS 10:00 · 11.7 min · 261 recorded · 259 measured · Source: the US BTS 11:00 · 17.1 min · 326 recorded · 326 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 131 recorded · 129 measured · Source: the US BTS 13:00 · 14.6 min · 233 recorded · 231 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 127 recorded · 125 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 177 recorded · 176 measured · Source: the US BTS 16:00 · 20.1 min · 269 recorded · 268 measured · Source: the US BTS 17:00 · 25.4 min · 254 recorded · 254 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 179 recorded · 178 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 109 recorded · 109 measured · Source: the US BTS 20:00 · 14.6 min · 206 recorded · 206 measured · Source: the US BTS 21:00 · 27.8 min · 273 recorded · 270 measured · Source: the US BTS 22:00 · 24.1 min · 232 recorded · 231 measured · Source: the US BTS 23:00 · 7.6 min · 442 recorded · 440 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 · 464 · 464 recorded · 461 measured · Source: the US BTS 06:00 · 433 · 433 recorded · 431 measured · Source: the US BTS 07:00 · 102 · 102 recorded · 102 measured · Source: the US BTS 08:00 · 311 · 311 recorded · 308 measured · Source: the US BTS 09:00 · 212 · 212 recorded · 210 measured · Source: the US BTS 10:00 · 261 · 261 recorded · 259 measured · Source: the US BTS 11:00 · 326 · 326 recorded · 326 measured · Source: the US BTS 12:00 · 131 · 131 recorded · 129 measured · Source: the US BTS 13:00 · 233 · 233 recorded · 231 measured · Source: the US BTS 14:00 · 127 · 127 recorded · 125 measured · Source: the US BTS 15:00 · 177 · 177 recorded · 176 measured · Source: the US BTS 16:00 · 269 · 269 recorded · 268 measured · Source: the US BTS 17:00 · 254 · 254 recorded · 254 measured · Source: the US BTS 18:00 · 179 · 179 recorded · 178 measured · Source: the US BTS 19:00 · 109 · 109 recorded · 109 measured · Source: the US BTS 20:00 · 206 · 206 recorded · 206 measured · Source: the US BTS 21:00 · 273 · 273 recorded · 270 measured · Source: the US BTS 22:00 · 232 · 232 recorded · 231 measured · Source: the US BTS 23:00 · 442 · 442 recorded · 440 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———
05:0091.5%2.7 min461464
06:0094.0%2.8 min431433
07:00Fewer than 200 measured departures—102102
08:0086.0%8.0 min308311
09:0079.5%11.4 min210212
10:0078.4%11.7 min259261
11:0065.0%17.1 min326326
12:00Fewer than 200 measured departures—129131
13:0073.6%14.6 min231233
14:00Fewer than 200 measured departures—125127
15:00Fewer than 200 measured departures—176177
16:0060.8%20.1 min268269
17:0054.3%25.4 min254254
18:00Fewer than 200 measured departures—178179
19:00Fewer than 200 measured departures—109109
20:0068.5%14.6 min206206
21:0050.4%27.8 min270273
22:0058.4%24.1 min231232
23:0078.6%7.6 min440442

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 71.1% · 726 recorded · 722 measured · Source: the US BTS Tuesday · 72.5% · 673 recorded · 672 measured · Source: the US BTS Wednesday · 73.6% · 668 recorded · 664 measured · Source: the US BTS Thursday · 67.8% · 712 recorded · 708 measured · Source: the US BTS Friday · 70.8% · 730 recorded · 727 measured · Source: the US BTS Saturday · 78.0% · 581 recorded · 576 measured · Source: the US BTS Sunday · 69.3% · 651 recorded · 645 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 · 15.8 min · 726 recorded · 722 measured · Source: the US BTS Tuesday · 13.8 min · 673 recorded · 672 measured · Source: the US BTS Wednesday · 13.1 min · 668 recorded · 664 measured · Source: the US BTS Thursday · 16.9 min · 712 recorded · 708 measured · Source: the US BTS Friday · 15.5 min · 730 recorded · 727 measured · Source: the US BTS Saturday · 9.8 min · 581 recorded · 576 measured · Source: the US BTS Sunday · 15.5 min · 651 recorded · 645 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 · 726 · 726 recorded · 722 measured · Source: the US BTS Tuesday · 673 · 673 recorded · 672 measured · Source: the US BTS Wednesday · 668 · 668 recorded · 664 measured · Source: the US BTS Thursday · 712 · 712 recorded · 708 measured · Source: the US BTS Friday · 730 · 730 recorded · 727 measured · Source: the US BTS Saturday · 581 · 581 recorded · 576 measured · Source: the US BTS Sunday · 651 · 651 recorded · 645 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday71.1%15.8 min722726
Tuesday72.5%13.8 min672673
Wednesday73.6%13.1 min664668
Thursday67.8%16.9 min708712
Friday70.8%15.5 min727730
Saturday78.0%9.8 min576581
Sunday69.3%15.5 min645651

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 · 80.7% · 385 recorded · 384 measured · Source: the US BTS Feb · 78.8% · 327 recorded · 326 measured · Source: the US BTS Mar · 74.2% · 419 recorded · 410 measured · Source: the US BTS Apr · 78.2% · 426 recorded · 422 measured · Source: the US BTS May · 68.6% · 440 recorded · 440 measured · Source: the US BTS Jun · 61.9% · 494 recorded · 493 measured · Source: the US BTS Jul · 60.5% · 524 recorded · 522 measured · Source: the US BTS Aug · 75.9% · 242 recorded · 241 measured · Source: the US BTS Sep · 78.5% · 232 recorded · 232 measured · Source: the US BTS Oct · 69.2% · 390 recorded · 390 measured · Source: the US BTS Nov · 78.7% · 420 recorded · 413 measured · Source: the US BTS Dec · 67.1% · 442 recorded · 441 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 · 8.7 min · 385 recorded · 384 measured · Source: the US BTS Feb · 10.3 min · 327 recorded · 326 measured · Source: the US BTS Mar · 12.8 min · 419 recorded · 410 measured · Source: the US BTS Apr · 10.1 min · 426 recorded · 422 measured · Source: the US BTS May · 15.4 min · 440 recorded · 440 measured · Source: the US BTS Jun · 20.1 min · 494 recorded · 493 measured · Source: the US BTS Jul · 22.5 min · 524 recorded · 522 measured · Source: the US BTS Aug · 15.7 min · 242 recorded · 241 measured · Source: the US BTS Sep · 10.7 min · 232 recorded · 232 measured · Source: the US BTS Oct · 12.3 min · 390 recorded · 390 measured · Source: the US BTS Nov · 11.7 min · 420 recorded · 413 measured · Source: the US BTS Dec · 17.8 min · 442 recorded · 441 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 · 385 · 385 recorded · 384 measured · Source: the US BTS Feb · 327 · 327 recorded · 326 measured · Source: the US BTS Mar · 419 · 419 recorded · 410 measured · Source: the US BTS Apr · 426 · 426 recorded · 422 measured · Source: the US BTS May · 440 · 440 recorded · 440 measured · Source: the US BTS Jun · 494 · 494 recorded · 493 measured · Source: the US BTS Jul · 524 · 524 recorded · 522 measured · Source: the US BTS Aug · 242 · 242 recorded · 241 measured · Source: the US BTS Sep · 232 · 232 recorded · 232 measured · Source: the US BTS Oct · 390 · 390 recorded · 390 measured · Source: the US BTS Nov · 420 · 420 recorded · 413 measured · Source: the US BTS Dec · 442 · 442 recorded · 441 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan80.7%8.7 min384385
Feb78.8%10.3 min326327
Mar74.2%12.8 min410419
Apr78.2%10.1 min422426
May68.6%15.4 min440440
Jun61.9%20.1 min493494
Jul60.5%22.5 min522524
Aug75.9%15.7 min241242
Sep78.5%10.7 min232232
Oct69.2%12.3 min390390
Nov78.7%11.7 min413420
Dec67.1%17.8 min441442

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 71.3% 3,380
  • Delayed >15 min 28.1% 1,334
  • Cancelled 0.6% 27
  • 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

70
70 of 70
Flight numbersBy direction DeparturesOn time
WN4804 MDW → LAX 121 65.3%
WN1966 LAX → MDW 110 86.4%
WN2129 MDW → LAX 92 76.9%
WN651 LAX → MDW 75 97.3%
WN712 LAX → MDW 68 69.1%
WN2749 LAX → MDW 67 80.6%
WN3239 MDW → LAX 66 78.5%
WN1263 MDW → LAX 61 72.1%
WN2051 LAX → MDW 61 86.9%
WN2725 MDW → LAX 61 42.6%
WN3506 LAX → MDW 61 67.2%
WN389 MDW → LAX 61 90.2%
WN2773 LAX → MDW 60 43.3%
WN3838 MDW → LAX 60 48.3%
WN2413 LAX → MDW 58 80.7%
WN3332 MDW → LAX 58 65.5%
WN3396 LAX → MDW 58 94.8%
WN4545 LAX → MDW 58 74.1%
WN991 LAX → MDW 58 77.6%
WN1393 MDW → LAX 57 86.0%
WN2341 LAX → MDW 57 94.7%
WN2731 MDW → LAX 57 84.2%
WN297 MDW → LAX 57 57.1%
WN3290 MDW → LAX 57 50.9%
WN3316 MDW → LAX 57 71.9%
WN4326 LAX → MDW 57 87.7%
WN2159 MDW → LAX 55 79.6%
WN3374 LAX → MDW 54 81.5%
WN1664 LAX → MDW 52 65.4%
WN3531 MDW → LAX 52 59.6%
WN188 MDW → LAX 50 30.0%
WN2238 LAX → MDW 50 82.0%
WN2462 MDW → LAX 50 88.0%
WN3364 MDW → LAX 50 16.0%
WN508 LAX → MDW 50 90.0%
WN2433 MDW → LAX 49 89.8%
WN734 LAX → MDW 49 28.6%
WN510 MDW → LAX 47 74.5%
WN2397 MDW → LAX 46 58.7%
WN1118 LAX → MDW 42 61.9%
WN234 MDW → LAX 42 66.7%
WN3394 LAX → MDW 42 53.7%
WN4541 LAX → MDW 42 23.8%
WN468 LAX → MDW 42 100.0%
WN899 MDW → LAX 42 100.0%
WN4398 LAX → MDW 41 80.5%
WN1289 LAX → MDW 40 66.7%
WN1777 LAX → MDW 40 95.0%
WN3377 LAX → MDW 36 54.3%
WN1301 MDW → LAX 34 73.5%
WN1375 LAX → MDW 34 88.2%
WN4637 MDW → LAX 34 85.3%
WN866 MDW → LAX 34 58.8%
WN165 LAX → MDW 33 93.8%
WN2240 LAX → MDW 33 84.4%
WN3173 LAX → MDW 33 93.9%
WN4148 MDW → LAX 33 71.9%
WN493 LAX → MDW 33 76.7%
WN532 MDW → LAX 33 93.9%
WN1468 MDW → LAX 32 33.3%
WN1537 LAX → MDW 32 84.4%
WN1767 MDW → LAX 32 87.5%
WN2896 MDW → LAX 32 96.9%
WN2911 LAX → MDW 32 96.9%
WN3067 LAX → MDW 32 58.1%
WN4578 LAX → MDW 32 75.0%
WN355 LAX → MDW 31 77.4%
WN834 LAX → MDW 31 41.9%
WN1487 MDW → LAX 30 56.7%
WN3041 LAX → MDW 30 40.0%

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 231 −20.6% 1 56.7%
June 2026 220 −19.4% 0 55.5%
May 2026 212 −7.0% 0 61.3%
April 2026 204 −6.4% 2 70.1%
March 2026 202 −2.9% 8 63.9%
February 2026 168 +6.3% 0 71.4%
January 2026 193 +1.0% 1 78.2%
December 2025 230 +9.0% 0 63.5%
November 2025 205 −1.4% 7 75.6%
October 2025 238 +56.6% 0 60.1%
September 2025 232 0 78.4%
August 2025 241 1 75.9%
July 2025 291 1 63.6%
June 2025 273 1 67.0%
May 2025 228 0 75.4%
April 2025 218 2 85.8%
March 2025 208 1 84.1%
February 2025 158 1 86.7%
January 2025 191 0 83.2%
December 2024 211 1 71.1%
November 2024 208 0 81.7%
October 2024 152 0 83.6%

How to read this chart

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