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1,016 km · Domestic

Chicago Midway (MDW) – Raleigh-Durham (RDU)

In July 2026, 179 flights operated between Chicago Midway and Raleigh-Durham (both directions), and 57.0% 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
January136122▼ 10.3%
February112110▼ 1.8%
March121125▲ 3.3%
April142145▲ 2.1%
May148160▲ 8.1%
June220175▼ 20.5%
July233179▼ 23.2%
August184––
September180––
October160–in progress
November164––
December178––
Year to date (Jan–Jul)1,1121,016▼ 8.6%

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
January86.8%90.2%▲ 3.9%
February87.5%86.4%▼ 1.3%
March81.8%68.8%▼ 15.9%
April80.3%75.9%▼ 5.5%
May83.8%74.4%▼ 11.2%
June77.7%61.1%▼ 21.4%
July74.7%57.0%▼ 23.7%
August78.8%––
September83.9%––
October81.9%–in progress
November91.5%––
December76.4%––
Year-to-date average (Jan–Jul)81.8%73.4%▼ 10.3%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January012–
February02–
March37▲ 133.3%
April03–
May00–
June21▼ 50.0%
July550.0%
August3––
September0––
October0–in progress
November6––
December0––
Year to date (Jan–Jul)1030▲ 200.0%

By direction

MDW → RDU

Scheduled flights
1,733
Flights operated
1,709
Cancelled
24 · 1.4%
On-time departures
79.6%

RDU → MDW

Scheduled flights
1,763
Flights operated
1,738
Cancelled
25 · 1.4%
On-time departures
77.3%

MDW → RDU and RDU → MDW counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 3,496 100.0% 78.5% 49

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 delay06:00–07:00-1.2min · 236 recorded · 232 measured
Gap to highest-delay hour29.2min06:00 ↔ 19:00
Recorded flights3,496MDW–RDU

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 · 143 recorded · 140 measured · Source: the US BTS 06:00 · 96.1% · 236 recorded · 232 measured · Source: the US BTS 07:00 · 91.8% · 318 recorded · 316 measured · Source: the US BTS 08:00 · 90.6% · 289 recorded · 286 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 146 recorded · 143 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 121 recorded · 121 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 119 recorded · 118 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 101 recorded · 100 measured · Source: the US BTS 13:00 · 77.6% · 374 recorded · 370 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 170 recorded · 169 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 147 recorded · 147 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 92 recorded · 92 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 112 recorded · 106 measured · Source: the US BTS 18:00 · 67.4% · 555 recorded · 543 measured · Source: the US BTS 19:00 · 54.3% · 272 recorded · 269 measured · Source: the US BTS 20:00 · 66.7% · 279 recorded · 273 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 22 recorded · 22 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 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 · 143 recorded · 140 measured · Source: the US BTS 06:00 · -1.2 min · 236 recorded · 232 measured · Source: the US BTS 07:00 · 2.4 min · 318 recorded · 316 measured · Source: the US BTS 08:00 · 4.3 min · 289 recorded · 286 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 146 recorded · 143 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 121 recorded · 121 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 119 recorded · 118 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 101 recorded · 100 measured · Source: the US BTS 13:00 · 11.3 min · 374 recorded · 370 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 170 recorded · 169 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 147 recorded · 147 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 92 recorded · 92 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 112 recorded · 106 measured · Source: the US BTS 18:00 · 17.2 min · 555 recorded · 543 measured · Source: the US BTS 19:00 · 28.0 min · 272 recorded · 269 measured · Source: the US BTS 20:00 · 20.4 min · 279 recorded · 273 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 22 recorded · 22 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 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 · 143 · 143 recorded · 140 measured · Source: the US BTS 06:00 · 236 · 236 recorded · 232 measured · Source: the US BTS 07:00 · 318 · 318 recorded · 316 measured · Source: the US BTS 08:00 · 289 · 289 recorded · 286 measured · Source: the US BTS 09:00 · 146 · 146 recorded · 143 measured · Source: the US BTS 10:00 · 121 · 121 recorded · 121 measured · Source: the US BTS 11:00 · 119 · 119 recorded · 118 measured · Source: the US BTS 12:00 · 101 · 101 recorded · 100 measured · Source: the US BTS 13:00 · 374 · 374 recorded · 370 measured · Source: the US BTS 14:00 · 170 · 170 recorded · 169 measured · Source: the US BTS 15:00 · 147 · 147 recorded · 147 measured · Source: the US BTS 16:00 · 92 · 92 recorded · 92 measured · Source: the US BTS 17:00 · 112 · 112 recorded · 106 measured · Source: the US BTS 18:00 · 555 · 555 recorded · 543 measured · Source: the US BTS 19:00 · 272 · 272 recorded · 269 measured · Source: the US BTS 20:00 · 279 · 279 recorded · 273 measured · Source: the US BTS 21:00 · 22 · 22 recorded · 22 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 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—140143
06:0096.1%-1.2 min232236
07:0091.8%2.4 min316318
08:0090.6%4.3 min286289
09:00Fewer than 200 measured departures—143146
10:00Fewer than 200 measured departures—121121
11:00Fewer than 200 measured departures—118119
12:00Fewer than 200 measured departures—100101
13:0077.6%11.3 min370374
14:00Fewer than 200 measured departures—169170
15:00Fewer than 200 measured departures—147147
16:00Fewer than 200 measured departures—9292
17:00Fewer than 200 measured departures—106112
18:0067.4%17.2 min543555
19:0054.3%28.0 min269272
20:0066.7%20.4 min273279
21:00Fewer than 200 measured departures—2222
22:00No observations———
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 78.5% · 521 recorded · 512 measured · Source: the US BTS Tuesday · 80.8% · 497 recorded · 494 measured · Source: the US BTS Wednesday · 80.1% · 496 recorded · 492 measured · Source: the US BTS Thursday · 79.0% · 516 recorded · 513 measured · Source: the US BTS Friday · 81.6% · 518 recorded · 510 measured · Source: the US BTS Saturday · 77.7% · 394 recorded · 381 measured · Source: the US BTS Sunday · 72.1% · 554 recorded · 545 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 · 11.3 min · 521 recorded · 512 measured · Source: the US BTS Tuesday · 8.7 min · 497 recorded · 494 measured · Source: the US BTS Wednesday · 8.8 min · 496 recorded · 492 measured · Source: the US BTS Thursday · 12.2 min · 516 recorded · 513 measured · Source: the US BTS Friday · 10.5 min · 518 recorded · 510 measured · Source: the US BTS Saturday · 10.5 min · 394 recorded · 381 measured · Source: the US BTS Sunday · 14.4 min · 554 recorded · 545 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 · 521 · 521 recorded · 512 measured · Source: the US BTS Tuesday · 497 · 497 recorded · 494 measured · Source: the US BTS Wednesday · 496 · 496 recorded · 492 measured · Source: the US BTS Thursday · 516 · 516 recorded · 513 measured · Source: the US BTS Friday · 518 · 518 recorded · 510 measured · Source: the US BTS Saturday · 394 · 394 recorded · 381 measured · Source: the US BTS Sunday · 554 · 554 recorded · 545 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday78.5%11.3 min512521
Tuesday80.8%8.7 min494497
Wednesday80.1%8.8 min492496
Thursday79.0%12.2 min513516
Friday81.6%10.5 min510518
Saturday77.7%10.5 min381394
Sunday72.1%14.4 min545554

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 · 88.4% · 270 recorded · 258 measured · Source: the US BTS Feb · 86.9% · 224 recorded · 222 measured · Source: the US BTS Mar · 75.2% · 256 recorded · 246 measured · Source: the US BTS Apr · 78.1% · 290 recorded · 287 measured · Source: the US BTS May · 78.9% · 308 recorded · 308 measured · Source: the US BTS Jun · 70.4% · 398 recorded · 395 measured · Source: the US BTS Jul · 67.0% · 422 recorded · 412 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 187 recorded · 184 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 180 recorded · 180 measured · Source: the US BTS Oct · 82.7% · 260 recorded · 260 measured · Source: the US BTS Nov · 88.7% · 341 recorded · 335 measured · Source: the US BTS Dec · 75.0% · 360 recorded · 360 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 · 2.6 min · 270 recorded · 258 measured · Source: the US BTS Feb · 2.7 min · 224 recorded · 222 measured · Source: the US BTS Mar · 11.9 min · 256 recorded · 246 measured · Source: the US BTS Apr · 10.4 min · 290 recorded · 287 measured · Source: the US BTS May · 11.2 min · 308 recorded · 308 measured · Source: the US BTS Jun · 17.3 min · 398 recorded · 395 measured · Source: the US BTS Jul · 24.2 min · 422 recorded · 412 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 187 recorded · 184 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 180 recorded · 180 measured · Source: the US BTS Oct · 6.1 min · 260 recorded · 260 measured · Source: the US BTS Nov · 5.5 min · 341 recorded · 335 measured · Source: the US BTS Dec · 10.5 min · 360 recorded · 360 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 · 270 · 270 recorded · 258 measured · Source: the US BTS Feb · 224 · 224 recorded · 222 measured · Source: the US BTS Mar · 256 · 256 recorded · 246 measured · Source: the US BTS Apr · 290 · 290 recorded · 287 measured · Source: the US BTS May · 308 · 308 recorded · 308 measured · Source: the US BTS Jun · 398 · 398 recorded · 395 measured · Source: the US BTS Jul · 422 · 422 recorded · 412 measured · Source: the US BTS Aug · 187 · 187 recorded · 184 measured · Source: the US BTS Sep · 180 · 180 recorded · 180 measured · Source: the US BTS Oct · 260 · 260 recorded · 260 measured · Source: the US BTS Nov · 341 · 341 recorded · 335 measured · Source: the US BTS Dec · 360 · 360 recorded · 360 measured · Source: the US BTS

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

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan88.4%2.6 min258270
Feb86.9%2.7 min222224
Mar75.2%11.9 min246256
Apr78.1%10.4 min287290
May78.9%11.2 min308308
Jun70.4%17.3 min395398
Jul67.0%24.2 min412422
AugFewer than 200 measured departures—184187
SepFewer than 200 measured departures—180180
Oct82.7%6.1 min260260
Nov88.7%5.5 min335341
Dec75.0%10.5 min360360

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 77.4% 2,705
  • Delayed >15 min 21.2% 742
  • Cancelled 1.4% 49
  • 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

48
48 of 48
Flight numbersBy direction DeparturesOn time
WN1129 RDU → MDW 121 89.3%
WN239 MDW → RDU 118 76.3%
WN1384 MDW → RDU 109 89.9%
WN4418 RDU → MDW 97 72.2%
WN2665 MDW → RDU 73 69.4%
WN1108 MDW → RDU 64 90.6%
WN4108 RDU → MDW 63 77.4%
WN2224 MDW → RDU 61 81.7%
WN3819 MDW → RDU 61 93.4%
WN2080 MDW → RDU 60 76.3%
WN3774 RDU → MDW 60 91.5%
WN207 MDW → RDU 59 57.9%
WN1218 RDU → MDW 58 72.4%
WN4601 MDW → RDU 58 83.6%
WN4808 MDW → RDU 58 94.4%
WN3357 MDW → RDU 57 72.7%
WN3543 RDU → MDW 57 70.2%
WN1418 RDU → MDW 52 61.5%
WN2304 RDU → MDW 52 86.5%
WN3752 RDU → MDW 52 94.2%
WN2163 RDU → MDW 50 86.0%
WN3724 MDW → RDU 50 80.0%
WN3766 RDU → MDW 50 38.8%
WN1549 RDU → MDW 47 88.4%
WN2736 RDU → MDW 47 93.2%
WN1123 MDW → RDU 43 65.1%
WN2667 RDU → MDW 42 71.4%
WN4180 RDU → MDW 42 88.1%
WN4221 MDW → RDU 42 28.2%
WN4516 RDU → MDW 42 35.7%
WN852 MDW → RDU 42 90.5%
WN2349 MDW → RDU 41 87.5%
WN3998 RDU → MDW 40 53.9%
WN4653 MDW → RDU 40 92.5%
WN2858 RDU → MDW 35 67.7%
WN1447 RDU → MDW 34 100.0%
WN4462 MDW → RDU 34 60.6%
WN711 MDW → RDU 34 85.3%
WN2091 MDW → RDU 33 81.8%
WN2972 RDU → MDW 33 53.1%
WN3432 RDU → MDW 33 93.9%
WN724 MDW → RDU 33 62.5%
WN931 MDW → RDU 33 81.3%
WN154 RDU → MDW 32 65.5%
WN1029 MDW → RDU 31 83.9%
WN1500 RDU → MDW 31 50.0%
WN3051 RDU → MDW 31 74.2%
WN4077 RDU → MDW 31 83.3%

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 179 −23.2% 5 57.0%
June 2026 175 −20.5% 1 61.1%
May 2026 160 +8.1% 0 74.4%
April 2026 145 +2.1% 3 75.9%
March 2026 125 +3.3% 7 68.8%
February 2026 110 −1.8% 2 86.4%
January 2026 122 −10.3% 12 90.2%
December 2025 178 −2.2% 0 76.4%
November 2025 164 −4.1% 6 91.5%
October 2025 160 +60.0% 0 81.9%
September 2025 180 0 83.9%
August 2025 184 3 78.8%
July 2025 233 5 74.7%
June 2025 220 2 77.7%
May 2025 148 0 83.8%
April 2025 142 0 80.3%
March 2025 121 3 81.8%
February 2025 112 0 87.5%
January 2025 136 0 86.8%
December 2024 182 0 73.6%
November 2024 171 0 86.0%
October 2024 100 0 84.0%

How to read this chart

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