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1,331 km · Domestic

Chicago Midway (MDW) – Louis Armstrong New Orleans (MSY)

In July 2026, 181 flights operated between Chicago Midway and Louis Armstrong New Orleans (both directions), and 59.1% 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
January118131▲ 11.0%
February138134▼ 2.9%
March1791790.0%
April1791790.0%
May181184▲ 1.7%
June190177▼ 6.8%
July193181▼ 6.2%
August169––
September162––
October194–in progress
November152––
December158––
Year to date (Jan–Jul)1,1781,165▼ 1.1%

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
January81.4%88.5%▲ 8.7%
February88.4%82.8%▼ 6.3%
March77.7%60.9%▼ 21.6%
April81.0%72.1%▼ 11.0%
May78.5%60.9%▼ 22.4%
June63.7%63.8%▲ 0.2%
July58.5%59.1%▲ 1.0%
August75.7%––
September84.6%––
October75.8%–in progress
November84.2%––
December71.5%––
Year-to-date average (Jan–Jul)75.6%69.7%▼ 7.8%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January100▼ 100.0%
February00–
March18▲ 700.0%
April03–
May00–
June03–
July15▲ 400.0%
August2––
September0––
October0–in progress
November6––
December0––
Year to date (Jan–Jul)1219▲ 58.3%

By direction

MDW → MSY

Scheduled flights
1,814
Flights operated
1,793
Cancelled
21 · 1.2%
On-time departures
73.6%

MSY → MDW

Scheduled flights
1,815
Flights operated
1,797
Cancelled
18 · 1.0%
On-time departures
76.3%

MDW → MSY and MSY → MDW counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 3,629 100.0% 75.0% 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 delay06:00–07:001.7min · 327 recorded · 326 measured
Gap to highest-delay hour29.6min06:00 ↔ 18:00
Recorded flights3,629MDW–MSY

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 · 195 recorded · 192 measured · Source: the US BTS 06:00 · 93.6% · 327 recorded · 326 measured · Source: the US BTS 07:00 · 88.7% · 230 recorded · 230 measured · Source: the US BTS 08:00 · 89.2% · 399 recorded · 397 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 191 recorded · 184 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 100 recorded · 99 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 186 recorded · 185 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 175 recorded · 174 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 102 recorded · 102 measured · Source: the US BTS 14:00 · 60.2% · 267 recorded · 264 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 177 recorded · 174 measured · Source: the US BTS 16:00 · 66.3% · 258 recorded · 255 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 184 recorded · 179 measured · Source: the US BTS 18:00 · 45.1% · 225 recorded · 224 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 110 recorded · 110 measured · Source: the US BTS 20:00 · 66.8% · 218 recorded · 217 measured · Source: the US BTS 21:00 · 58.7% · 241 recorded · 235 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 44 recorded · 43 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 · 195 recorded · 192 measured · Source: the US BTS 06:00 · 1.7 min · 327 recorded · 326 measured · Source: the US BTS 07:00 · 3.8 min · 230 recorded · 230 measured · Source: the US BTS 08:00 · 3.7 min · 399 recorded · 397 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 191 recorded · 184 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 100 recorded · 99 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 186 recorded · 185 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 175 recorded · 174 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 102 recorded · 102 measured · Source: the US BTS 14:00 · 20.0 min · 267 recorded · 264 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 177 recorded · 174 measured · Source: the US BTS 16:00 · 20.1 min · 258 recorded · 255 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 184 recorded · 179 measured · Source: the US BTS 18:00 · 31.2 min · 225 recorded · 224 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 110 recorded · 110 measured · Source: the US BTS 20:00 · 25.6 min · 218 recorded · 217 measured · Source: the US BTS 21:00 · 22.9 min · 241 recorded · 235 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 44 recorded · 43 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 · 195 · 195 recorded · 192 measured · Source: the US BTS 06:00 · 327 · 327 recorded · 326 measured · Source: the US BTS 07:00 · 230 · 230 recorded · 230 measured · Source: the US BTS 08:00 · 399 · 399 recorded · 397 measured · Source: the US BTS 09:00 · 191 · 191 recorded · 184 measured · Source: the US BTS 10:00 · 100 · 100 recorded · 99 measured · Source: the US BTS 11:00 · 186 · 186 recorded · 185 measured · Source: the US BTS 12:00 · 175 · 175 recorded · 174 measured · Source: the US BTS 13:00 · 102 · 102 recorded · 102 measured · Source: the US BTS 14:00 · 267 · 267 recorded · 264 measured · Source: the US BTS 15:00 · 177 · 177 recorded · 174 measured · Source: the US BTS 16:00 · 258 · 258 recorded · 255 measured · Source: the US BTS 17:00 · 184 · 184 recorded · 179 measured · Source: the US BTS 18:00 · 225 · 225 recorded · 224 measured · Source: the US BTS 19:00 · 110 · 110 recorded · 110 measured · Source: the US BTS 20:00 · 218 · 218 recorded · 217 measured · Source: the US BTS 21:00 · 241 · 241 recorded · 235 measured · Source: the US BTS 22:00 · 44 · 44 recorded · 43 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—192195
06:0093.6%1.7 min326327
07:0088.7%3.8 min230230
08:0089.2%3.7 min397399
09:00Fewer than 200 measured departures—184191
10:00Fewer than 200 measured departures—99100
11:00Fewer than 200 measured departures—185186
12:00Fewer than 200 measured departures—174175
13:00Fewer than 200 measured departures—102102
14:0060.2%20.0 min264267
15:00Fewer than 200 measured departures—174177
16:0066.3%20.1 min255258
17:00Fewer than 200 measured departures—179184
18:0045.1%31.2 min224225
19:00Fewer than 200 measured departures—110110
20:0066.8%25.6 min217218
21:0058.7%22.9 min235241
22:00Fewer than 200 measured departures—4344
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 72.8% · 518 recorded · 510 measured · Source: the US BTS Tuesday · 84.2% · 473 recorded · 467 measured · Source: the US BTS Wednesday · 82.9% · 469 recorded · 462 measured · Source: the US BTS Thursday · 70.8% · 513 recorded · 507 measured · Source: the US BTS Friday · 68.6% · 536 recorded · 532 measured · Source: the US BTS Saturday · 79.8% · 460 recorded · 455 measured · Source: the US BTS Sunday · 69.6% · 660 recorded · 657 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 · 13.8 min · 518 recorded · 510 measured · Source: the US BTS Tuesday · 7.9 min · 473 recorded · 467 measured · Source: the US BTS Wednesday · 10.1 min · 469 recorded · 462 measured · Source: the US BTS Thursday · 14.7 min · 513 recorded · 507 measured · Source: the US BTS Friday · 17.4 min · 536 recorded · 532 measured · Source: the US BTS Saturday · 12.8 min · 460 recorded · 455 measured · Source: the US BTS Sunday · 18.6 min · 660 recorded · 657 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 · 518 · 518 recorded · 510 measured · Source: the US BTS Tuesday · 473 · 473 recorded · 467 measured · Source: the US BTS Wednesday · 469 · 469 recorded · 462 measured · Source: the US BTS Thursday · 513 · 513 recorded · 507 measured · Source: the US BTS Friday · 536 · 536 recorded · 532 measured · Source: the US BTS Saturday · 460 · 460 recorded · 455 measured · Source: the US BTS Sunday · 660 · 660 recorded · 657 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday72.8%13.8 min510518
Tuesday84.2%7.9 min467473
Wednesday82.9%10.1 min462469
Thursday70.8%14.7 min507513
Friday68.6%17.4 min532536
Saturday79.8%12.8 min455460
Sunday69.6%18.6 min657660

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 · 85.1% · 259 recorded · 249 measured · Source: the US BTS Feb · 85.7% · 272 recorded · 272 measured · Source: the US BTS Mar · 69.3% · 367 recorded · 358 measured · Source: the US BTS Apr · 76.5% · 361 recorded · 358 measured · Source: the US BTS May · 69.6% · 365 recorded · 365 measured · Source: the US BTS Jun · 63.8% · 370 recorded · 367 measured · Source: the US BTS Jul · 58.8% · 380 recorded · 374 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 171 recorded · 169 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 162 recorded · 162 measured · Source: the US BTS Oct · 82.1% · 307 recorded · 307 measured · Source: the US BTS Nov · 86.1% · 315 recorded · 309 measured · Source: the US BTS Dec · 77.7% · 300 recorded · 300 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 · 5.3 min · 259 recorded · 249 measured · Source: the US BTS Feb · 4.8 min · 272 recorded · 272 measured · Source: the US BTS Mar · 16.7 min · 367 recorded · 358 measured · Source: the US BTS Apr · 10.9 min · 361 recorded · 358 measured · Source: the US BTS May · 18.1 min · 365 recorded · 365 measured · Source: the US BTS Jun · 23.2 min · 370 recorded · 367 measured · Source: the US BTS Jul · 28.0 min · 380 recorded · 374 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 171 recorded · 169 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 162 recorded · 162 measured · Source: the US BTS Oct · 9.8 min · 307 recorded · 307 measured · Source: the US BTS Nov · 6.6 min · 315 recorded · 309 measured · Source: the US BTS Dec · 12.6 min · 300 recorded · 300 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 · 259 · 259 recorded · 249 measured · Source: the US BTS Feb · 272 · 272 recorded · 272 measured · Source: the US BTS Mar · 367 · 367 recorded · 358 measured · Source: the US BTS Apr · 361 · 361 recorded · 358 measured · Source: the US BTS May · 365 · 365 recorded · 365 measured · Source: the US BTS Jun · 370 · 370 recorded · 367 measured · Source: the US BTS Jul · 380 · 380 recorded · 374 measured · Source: the US BTS Aug · 171 · 171 recorded · 169 measured · Source: the US BTS Sep · 162 · 162 recorded · 162 measured · Source: the US BTS Oct · 307 · 307 recorded · 307 measured · Source: the US BTS Nov · 315 · 315 recorded · 309 measured · Source: the US BTS Dec · 300 · 300 recorded · 300 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan85.1%5.3 min249259
Feb85.7%4.8 min272272
Mar69.3%16.7 min358367
Apr76.5%10.9 min358361
May69.6%18.1 min365365
Jun63.8%23.2 min367370
Jul58.8%28.0 min374380
AugFewer than 200 measured departures—169171
SepFewer than 200 measured departures—162162
Oct82.1%9.8 min307307
Nov86.1%6.6 min309315
Dec77.7%12.6 min300300

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 74.2% 2,691
  • Delayed >15 min 24.8% 899
  • Cancelled 1.1% 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

45
45 of 45
Flight numbersBy direction DeparturesOn time
WN1745 MDW → MSY 118 91.3%
WN736 MSY → MDW 118 91.3%
WN4731 MDW → MSY 103 79.2%
WN3293 MSY → MDW 90 79.6%
WN1434 MDW → MSY 64 76.2%
WN2232 MDW → MSY 64 87.3%
WN2156 MSY → MDW 62 93.4%
WN222 MSY → MDW 61 78.7%
WN2579 MDW → MSY 61 55.7%
WN3866 MDW → MSY 61 58.3%
WN4025 MSY → MDW 60 31.7%
WN2375 MDW → MSY 58 81.0%
WN2671 MDW → MSY 58 72.4%
WN2727 MDW → MSY 58 93.1%
WN2886 MSY → MDW 58 94.8%
WN508 MSY → MDW 58 81.0%
WN1926 MDW → MSY 57 98.3%
WN3306 MSY → MDW 57 86.0%
WN3508 MSY → MDW 57 49.1%
WN2704 MDW → MSY 52 36.5%
WN1442 MDW → MSY 50 64.0%
WN2015 MDW → MSY 50 82.0%
WN277 MDW → MSY 50 72.0%
WN2836 MDW → MSY 50 57.5%
WN676 MSY → MDW 50 34.7%
WN898 MSY → MDW 50 82.0%
WN2607 MSY → MDW 46 58.7%
WN3901 MSY → MDW 45 84.4%
WN1129 MSY → MDW 42 85.7%
WN270 MSY → MDW 42 90.5%
WN3655 MSY → MDW 42 100.0%
WN4664 MSY → MDW 42 68.3%
WN573 MDW → MSY 42 83.3%
WN3209 MDW → MSY 40 66.7%
WN3743 MDW → MSY 34 24.2%
WN1404 MSY → MDW 33 90.9%
WN1436 MSY → MDW 33 28.1%
WN2834 MDW → MSY 33 78.8%
WN4503 MDW → MSY 33 57.6%
WN142 MDW → MSY 31 80.7%
WN3449 MSY → MDW 31 100.0%
WN3825 MSY → MDW 31 63.3%
WN3851 MDW → MSY 31 90.3%
WN3974 MSY → MDW 31 87.1%
WN3437 MSY → MDW 30 73.3%

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 181 −6.2% 5 59.1%
June 2026 177 −6.8% 3 63.8%
May 2026 184 +1.7% 0 60.9%
April 2026 179 +0.0% 3 72.1%
March 2026 179 +0.0% 8 60.9%
February 2026 134 −2.9% 0 82.8%
January 2026 131 +11.0% 0 88.5%
December 2025 158 +11.3% 0 71.5%
November 2025 152 −3.2% 6 84.2%
October 2025 194 +71.7% 0 75.8%
September 2025 162 0 84.6%
August 2025 169 2 75.7%
July 2025 193 1 58.5%
June 2025 190 0 63.7%
May 2025 181 0 78.5%
April 2025 179 0 81.0%
March 2025 179 1 77.7%
February 2025 138 0 88.4%
January 2025 118 10 81.4%
December 2024 142 0 84.5%
November 2024 157 0 87.9%
October 2024 113 0 92.9%

How to read this chart

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