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1,073 km · Domestic

Chicago Midway (MDW) – Philadelphia (PHL)

In July 2026, 286 flights operated between Chicago Midway and Philadelphia (both directions), and 63.6% 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
January200186▼ 7.0%
February171162▼ 5.3%
March175181▲ 3.4%
April242222▼ 8.3%
May255238▼ 6.7%
June292281▼ 3.8%
July299286▼ 4.3%
August309––
September318––
October310–in progress
November257––
December244––
Year to date (Jan–Jul)1,6341,556▼ 4.8%

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
January77.5%80.1%▲ 3.4%
February81.3%82.7%▲ 1.7%
March85.1%60.2%▼ 29.3%
April78.1%80.2%▲ 2.7%
May70.2%63.0%▼ 10.3%
June64.0%71.5%▲ 11.7%
July58.2%63.6%▲ 9.3%
August72.8%––
September82.7%––
October76.8%–in progress
November78.6%––
December61.5%––
Year-to-date average (Jan–Jul)73.5%71.6%▼ 2.5%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January660.0%
February06–
March35▲ 66.7%
April00–
May10▼ 100.0%
June14▲ 300.0%
July814▲ 75.0%
August2––
September0––
October0–in progress
November15––
December0––
Year to date (Jan–Jul)1935▲ 84.2%

Airlines on this route

  1. Southwest Airlines 92.9%
  2. Frontier Airlines 7.1%

Oct 1, 2024 – Jul 31, 2026

By direction

MDW → PHL

Scheduled flights
2,757
Flights operated
2,721
Cancelled
36 · 1.3%
On-time departures
74.9%

PHL → MDW

Scheduled flights
2,761
Flights operated
2,724
Cancelled
37 · 1.3%
On-time departures
71.7%

MDW → PHL and PHL → MDW counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 5,126 92.9% 73.2% 65
Frontier Airlines F9 392 7.1% 73.7% 8

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 delay07:00–08:003.3min · 373 recorded · 370 measured
Gap to highest-delay hour37.5min07:00 ↔ 19:00
Recorded flights5,518MDW–PHL

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 · 94.3% · 268 recorded · 264 measured · Source: the US BTS 06:00 · 92.6% · 377 recorded · 376 measured · Source: the US BTS 07:00 · 94.1% · 373 recorded · 370 measured · Source: the US BTS 08:00 · 87.7% · 273 recorded · 269 measured · Source: the US BTS 09:00 · 84.3% · 221 recorded · 216 measured · Source: the US BTS 10:00 · 90.8% · 238 recorded · 238 measured · Source: the US BTS 11:00 · 80.6% · 352 recorded · 346 measured · Source: the US BTS 12:00 · 79.9% · 473 recorded · 467 measured · Source: the US BTS 13:00 · 72.3% · 470 recorded · 465 measured · Source: the US BTS 14:00 · 71.4% · 365 recorded · 360 measured · Source: the US BTS 15:00 · 55.7% · 325 recorded · 316 measured · Source: the US BTS 16:00 · 61.3% · 240 recorded · 240 measured · Source: the US BTS 17:00 · 54.9% · 265 recorded · 264 measured · Source: the US BTS 18:00 · 61.1% · 676 recorded · 664 measured · Source: the US BTS 19:00 · 47.8% · 251 recorded · 245 measured · Source: the US BTS 20:00 · 54.5% · 226 recorded · 224 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 93 recorded · 91 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 32 recorded · 30 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 · 3.9 min · 268 recorded · 264 measured · Source: the US BTS 06:00 · 5.4 min · 377 recorded · 376 measured · Source: the US BTS 07:00 · 3.3 min · 373 recorded · 370 measured · Source: the US BTS 08:00 · 4.2 min · 273 recorded · 269 measured · Source: the US BTS 09:00 · 6.0 min · 221 recorded · 216 measured · Source: the US BTS 10:00 · 4.0 min · 238 recorded · 238 measured · Source: the US BTS 11:00 · 10.4 min · 352 recorded · 346 measured · Source: the US BTS 12:00 · 9.7 min · 473 recorded · 467 measured · Source: the US BTS 13:00 · 18.1 min · 470 recorded · 465 measured · Source: the US BTS 14:00 · 15.8 min · 365 recorded · 360 measured · Source: the US BTS 15:00 · 31.1 min · 325 recorded · 316 measured · Source: the US BTS 16:00 · 29.4 min · 240 recorded · 240 measured · Source: the US BTS 17:00 · 29.5 min · 265 recorded · 264 measured · Source: the US BTS 18:00 · 27.1 min · 676 recorded · 664 measured · Source: the US BTS 19:00 · 40.8 min · 251 recorded · 245 measured · Source: the US BTS 20:00 · 32.4 min · 226 recorded · 224 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 93 recorded · 91 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 32 recorded · 30 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 · 268 · 268 recorded · 264 measured · Source: the US BTS 06:00 · 377 · 377 recorded · 376 measured · Source: the US BTS 07:00 · 373 · 373 recorded · 370 measured · Source: the US BTS 08:00 · 273 · 273 recorded · 269 measured · Source: the US BTS 09:00 · 221 · 221 recorded · 216 measured · Source: the US BTS 10:00 · 238 · 238 recorded · 238 measured · Source: the US BTS 11:00 · 352 · 352 recorded · 346 measured · Source: the US BTS 12:00 · 473 · 473 recorded · 467 measured · Source: the US BTS 13:00 · 470 · 470 recorded · 465 measured · Source: the US BTS 14:00 · 365 · 365 recorded · 360 measured · Source: the US BTS 15:00 · 325 · 325 recorded · 316 measured · Source: the US BTS 16:00 · 240 · 240 recorded · 240 measured · Source: the US BTS 17:00 · 265 · 265 recorded · 264 measured · Source: the US BTS 18:00 · 676 · 676 recorded · 664 measured · Source: the US BTS 19:00 · 251 · 251 recorded · 245 measured · Source: the US BTS 20:00 · 226 · 226 recorded · 224 measured · Source: the US BTS 21:00 · 93 · 93 recorded · 91 measured · Source: the US BTS 22:00 · 32 · 32 recorded · 30 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.

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———
05:0094.3%3.9 min264268
06:0092.6%5.4 min376377
07:0094.1%3.3 min370373
08:0087.7%4.2 min269273
09:0084.3%6.0 min216221
10:0090.8%4.0 min238238
11:0080.6%10.4 min346352
12:0079.9%9.7 min467473
13:0072.3%18.1 min465470
14:0071.4%15.8 min360365
15:0055.7%31.1 min316325
16:0061.3%29.4 min240240
17:0054.9%29.5 min264265
18:0061.1%27.1 min664676
19:0047.8%40.8 min245251
20:0054.5%32.4 min224226
21:00Fewer than 200 measured departures—9193
22:00Fewer than 200 measured departures—3032
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 66.9% · 867 recorded · 848 measured · Source: the US BTS Tuesday · 80.1% · 764 recorded · 758 measured · Source: the US BTS Wednesday · 78.4% · 756 recorded · 749 measured · Source: the US BTS Thursday · 72.6% · 820 recorded · 814 measured · Source: the US BTS Friday · 71.3% · 859 recorded · 854 measured · Source: the US BTS Saturday · 77.8% · 612 recorded · 600 measured · Source: the US BTS Sunday · 68.4% · 840 recorded · 822 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 · 23.9 min · 867 recorded · 848 measured · Source: the US BTS Tuesday · 13.0 min · 764 recorded · 758 measured · Source: the US BTS Wednesday · 13.4 min · 756 recorded · 749 measured · Source: the US BTS Thursday · 18.5 min · 820 recorded · 814 measured · Source: the US BTS Friday · 18.5 min · 859 recorded · 854 measured · Source: the US BTS Saturday · 12.9 min · 612 recorded · 600 measured · Source: the US BTS Sunday · 20.3 min · 840 recorded · 822 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 · 867 · 867 recorded · 848 measured · Source: the US BTS Tuesday · 764 · 764 recorded · 758 measured · Source: the US BTS Wednesday · 756 · 756 recorded · 749 measured · Source: the US BTS Thursday · 820 · 820 recorded · 814 measured · Source: the US BTS Friday · 859 · 859 recorded · 854 measured · Source: the US BTS Saturday · 612 · 612 recorded · 600 measured · Source: the US BTS Sunday · 840 · 840 recorded · 822 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday66.9%23.9 min848867
Tuesday80.1%13.0 min758764
Wednesday78.4%13.4 min749756
Thursday72.6%18.5 min814820
Friday71.3%18.5 min854859
Saturday77.8%12.9 min600612
Sunday68.4%20.3 min822840

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 · 78.8% · 398 recorded · 386 measured · Source: the US BTS Feb · 82.0% · 339 recorded · 333 measured · Source: the US BTS Mar · 72.5% · 364 recorded · 356 measured · Source: the US BTS Apr · 79.1% · 464 recorded · 464 measured · Source: the US BTS May · 66.7% · 494 recorded · 493 measured · Source: the US BTS Jun · 67.7% · 578 recorded · 573 measured · Source: the US BTS Jul · 60.9% · 607 recorded · 585 measured · Source: the US BTS Aug · 72.8% · 311 recorded · 309 measured · Source: the US BTS Sep · 82.7% · 318 recorded · 318 measured · Source: the US BTS Oct · 77.8% · 532 recorded · 531 measured · Source: the US BTS Nov · 80.5% · 584 recorded · 569 measured · Source: the US BTS Dec · 67.4% · 529 recorded · 528 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 · 10.8 min · 398 recorded · 386 measured · Source: the US BTS Feb · 9.0 min · 339 recorded · 333 measured · Source: the US BTS Mar · 16.0 min · 364 recorded · 356 measured · Source: the US BTS Apr · 9.5 min · 464 recorded · 464 measured · Source: the US BTS May · 20.2 min · 494 recorded · 493 measured · Source: the US BTS Jun · 27.2 min · 578 recorded · 573 measured · Source: the US BTS Jul · 38.1 min · 607 recorded · 585 measured · Source: the US BTS Aug · 18.8 min · 311 recorded · 309 measured · Source: the US BTS Sep · 7.5 min · 318 recorded · 318 measured · Source: the US BTS Oct · 11.1 min · 532 recorded · 531 measured · Source: the US BTS Nov · 10.9 min · 584 recorded · 569 measured · Source: the US BTS Dec · 19.1 min · 529 recorded · 528 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 · 398 · 398 recorded · 386 measured · Source: the US BTS Feb · 339 · 339 recorded · 333 measured · Source: the US BTS Mar · 364 · 364 recorded · 356 measured · Source: the US BTS Apr · 464 · 464 recorded · 464 measured · Source: the US BTS May · 494 · 494 recorded · 493 measured · Source: the US BTS Jun · 578 · 578 recorded · 573 measured · Source: the US BTS Jul · 607 · 607 recorded · 585 measured · Source: the US BTS Aug · 311 · 311 recorded · 309 measured · Source: the US BTS Sep · 318 · 318 recorded · 318 measured · Source: the US BTS Oct · 532 · 532 recorded · 531 measured · Source: the US BTS Nov · 584 · 584 recorded · 569 measured · Source: the US BTS Dec · 529 · 529 recorded · 528 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
Jan78.8%10.8 min386398
Feb82.0%9.0 min333339
Mar72.5%16.0 min356364
Apr79.1%9.5 min464464
May66.7%20.2 min493494
Jun67.7%27.2 min573578
Jul60.9%38.1 min585607
Aug72.8%18.8 min309311
Sep82.7%7.5 min318318
Oct77.8%11.1 min531532
Nov80.5%10.9 min569584
Dec67.4%19.1 min528529

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 72.3% 3,990
  • Delayed >15 min 26.4% 1,455
  • Cancelled 1.3% 73
  • 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

71
71 of 71
Flight numbersBy direction DeparturesOn time
F991617 PHL → MDW 140 76.5%
WN4351 MDW → PHL 139 67.4%
F994368 MDW → PHL 135 79.6%
WN2944 PHL → MDW 117 88.8%
WN1462 PHL → MDW 103 68.9%
WN3269 PHL → MDW 101 77.2%
WN1001 MDW → PHL 75 90.5%
WN3762 PHL → MDW 66 51.6%
WN3064 MDW → PHL 62 61.7%
WN2370 PHL → MDW 61 85.0%
WN3877 MDW → PHL 60 80.0%
WN1138 PHL → MDW 58 87.5%
WN2441 MDW → PHL 58 81.0%
WN2551 PHL → MDW 58 59.7%
WN3378 MDW → PHL 58 89.7%
WN3611 MDW → PHL 58 36.2%
WN3628 MDW → PHL 58 74.1%
WN3672 MDW → PHL 58 89.7%
WN3728 PHL → MDW 58 91.4%
WN3730 PHL → MDW 58 51.7%
WN4904 PHL → MDW 58 96.4%
WN1522 MDW → PHL 57 75.4%
WN2934 MDW → PHL 57 77.2%
WN3338 PHL → MDW 57 55.4%
WN3729 PHL → MDW 57 73.7%
WN2381 PHL → MDW 52 34.6%
WN1274 MDW → PHL 51 34.0%
WN3835 PHL → MDW 51 48.0%
WN1906 MDW → PHL 50 66.0%
WN2234 MDW → PHL 50 94.0%
WN3224 PHL → MDW 50 83.7%
WN3225 MDW → PHL 50 86.0%
WN3226 PHL → MDW 50 36.2%
WN3336 MDW → PHL 50 96.0%
WN4122 MDW → PHL 50 96.0%
WN4948 MDW → PHL 50 59.6%
WN951 PHL → MDW 50 82.0%
WN1979 MDW → PHL 49 65.3%
WN4006 PHL → MDW 49 57.1%
WN418 PHL → MDW 49 89.8%
WN1030 MDW → PHL 47 91.1%
WN2617 MDW → PHL 47 89.1%
WN419 PHL → MDW 47 65.2%
WN4038 PHL → MDW 45 90.9%
WN3733 MDW → PHL 43 86.1%
F991618 MDW → PHL 42 71.4%
WN1706 MDW → PHL 42 92.9%
WN2093 MDW → PHL 42 64.3%
WN2748 PHL → MDW 42 81.0%
WN3654 MDW → PHL 42 64.3%
WN3860 PHL → MDW 42 42.9%
WN4837 PHL → MDW 42 68.3%
WN818 PHL → MDW 42 76.2%
WN2470 MDW → PHL 41 78.1%
WN4263 MDW → PHL 41 38.5%
F994367 PHL → MDW 35 60.0%
WN3878 MDW → PHL 35 71.4%
WN1107 PHL → MDW 34 64.7%
WN4202 PHL → MDW 34 94.1%
WN933 PHL → MDW 34 78.8%
WN1378 MDW → PHL 33 57.6%
WN1474 PHL → MDW 33 97.0%
WN1625 MDW → PHL 33 60.6%
WN2685 PHL → MDW 33 80.7%
WN4135 PHL → MDW 33 93.9%
WN4173 PHL → MDW 33 93.8%
WN745 MDW → PHL 33 56.3%
WN3709 PHL → MDW 32 100.0%
WN3541 PHL → MDW 31 32.3%
WN356 PHL → MDW 31 100.0%
WN3954 MDW → PHL 31 67.7%

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 286 −4.3% 14 63.6%
June 2026 281 −3.8% 4 71.5%
May 2026 238 −6.7% 0 63.0%
April 2026 222 −8.3% 0 80.2%
March 2026 181 +3.4% 5 60.2%
February 2026 162 −5.3% 6 82.7%
January 2026 186 −7.0% 6 80.1%
December 2025 244 −14.1% 0 61.5%
November 2025 257 −17.6% 15 78.6%
October 2025 310 +40.3% 0 76.8%
September 2025 318 0 82.7%
August 2025 309 2 72.8%
July 2025 299 8 58.2%
June 2025 292 1 64.0%
May 2025 255 1 70.2%
April 2025 242 0 78.1%
March 2025 175 3 85.1%
February 2025 171 0 81.3%
January 2025 200 6 77.5%
December 2024 284 1 72.5%
November 2024 312 0 82.1%
October 2024 221 1 79.2%

How to read this chart

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