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1,438 km · Domestic

Denver (DEN) – Chicago Midway (MDW)

In July 2026, 442 flights operated between Denver and Chicago Midway (both directions), and 60.6% 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
January430314▼ 27.0%
February376275▼ 26.9%
March427327▼ 23.4%
April400315▼ 21.3%
May394324▼ 17.8%
June547414▼ 24.3%
July587442▼ 24.7%
August448––
September405––
October427–in progress
November351––
December388––
Year to date (Jan–Jul)3,1612,411▼ 23.7%

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
January79.3%82.8%▲ 4.4%
February80.6%71.3%▼ 11.5%
March81.7%59.9%▼ 26.7%
April70.3%68.9%▼ 2.0%
May62.7%66.7%▲ 6.4%
June56.7%57.2%▲ 0.9%
July61.2%60.6%▼ 1.0%
August68.5%––
September79.8%––
October75.6%–in progress
November78.1%––
December61.1%––
Year-to-date average (Jan–Jul)70.4%66.8%▼ 5.1%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January00–
February52▼ 60.0%
March313▲ 333.3%
April87▼ 12.5%
May52▼ 60.0%
June47▲ 75.0%
July115▼ 54.5%
August2––
September0––
October0–in progress
November24––
December4––
Year to date (Jan–Jul)36360.0%

Airlines on this route

  1. Southwest Airlines 92.7%
  2. Frontier Airlines 7.3%

Oct 1, 2024 – Jul 31, 2026

By direction

DEN → MDW

Scheduled flights
4,455
Flights operated
4,393
Cancelled
62 · 1.4%
On-time departures
70.0%

MDW → DEN

Scheduled flights
4,555
Flights operated
4,503
Cancelled
52 · 1.1%
On-time departures
72.1%

DEN → MDW and MDW → DEN counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 8,356 92.7% 70.8% 107
Frontier Airlines F9 654 7.3% 73.9% 7

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 delay05:00–06:000.2min · 625 recorded · 619 measured
Gap to highest-delay hour33.9min05:00 ↔ 21:00
Recorded flights9,010DEN–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 · 93.9% · 625 recorded · 619 measured · Source: the US BTS 06:00 · 93.2% · 501 recorded · 496 measured · Source: the US BTS 07:00 · 89.0% · 617 recorded · 609 measured · Source: the US BTS 08:00 · 88.6% · 612 recorded · 606 measured · Source: the US BTS 09:00 · 82.4% · 506 recorded · 500 measured · Source: the US BTS 10:00 · 79.6% · 504 recorded · 495 measured · Source: the US BTS 11:00 · 75.2% · 481 recorded · 476 measured · Source: the US BTS 12:00 · 74.7% · 515 recorded · 510 measured · Source: the US BTS 13:00 · 73.3% · 523 recorded · 516 measured · Source: the US BTS 14:00 · 65.0% · 538 recorded · 529 measured · Source: the US BTS 15:00 · 65.6% · 360 recorded · 358 measured · Source: the US BTS 16:00 · 62.1% · 479 recorded · 472 measured · Source: the US BTS 17:00 · 47.2% · 751 recorded · 743 measured · Source: the US BTS 18:00 · 54.3% · 484 recorded · 477 measured · Source: the US BTS 19:00 · 49.3% · 386 recorded · 379 measured · Source: the US BTS 20:00 · 55.4% · 616 recorded · 610 measured · Source: the US BTS 21:00 · 48.5% · 334 recorded · 328 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 178 recorded · 173 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 · 0.2 min · 625 recorded · 619 measured · Source: the US BTS 06:00 · 4.1 min · 501 recorded · 496 measured · Source: the US BTS 07:00 · 3.1 min · 617 recorded · 609 measured · Source: the US BTS 08:00 · 4.8 min · 612 recorded · 606 measured · Source: the US BTS 09:00 · 7.5 min · 506 recorded · 500 measured · Source: the US BTS 10:00 · 9.8 min · 504 recorded · 495 measured · Source: the US BTS 11:00 · 14.3 min · 481 recorded · 476 measured · Source: the US BTS 12:00 · 13.6 min · 515 recorded · 510 measured · Source: the US BTS 13:00 · 14.1 min · 523 recorded · 516 measured · Source: the US BTS 14:00 · 22.0 min · 538 recorded · 529 measured · Source: the US BTS 15:00 · 19.9 min · 360 recorded · 358 measured · Source: the US BTS 16:00 · 24.7 min · 479 recorded · 472 measured · Source: the US BTS 17:00 · 32.2 min · 751 recorded · 743 measured · Source: the US BTS 18:00 · 28.2 min · 484 recorded · 477 measured · Source: the US BTS 19:00 · 33.3 min · 386 recorded · 379 measured · Source: the US BTS 20:00 · 27.0 min · 616 recorded · 610 measured · Source: the US BTS 21:00 · 34.1 min · 334 recorded · 328 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 178 recorded · 173 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 · 625 · 625 recorded · 619 measured · Source: the US BTS 06:00 · 501 · 501 recorded · 496 measured · Source: the US BTS 07:00 · 617 · 617 recorded · 609 measured · Source: the US BTS 08:00 · 612 · 612 recorded · 606 measured · Source: the US BTS 09:00 · 506 · 506 recorded · 500 measured · Source: the US BTS 10:00 · 504 · 504 recorded · 495 measured · Source: the US BTS 11:00 · 481 · 481 recorded · 476 measured · Source: the US BTS 12:00 · 515 · 515 recorded · 510 measured · Source: the US BTS 13:00 · 523 · 523 recorded · 516 measured · Source: the US BTS 14:00 · 538 · 538 recorded · 529 measured · Source: the US BTS 15:00 · 360 · 360 recorded · 358 measured · Source: the US BTS 16:00 · 479 · 479 recorded · 472 measured · Source: the US BTS 17:00 · 751 · 751 recorded · 743 measured · Source: the US BTS 18:00 · 484 · 484 recorded · 477 measured · Source: the US BTS 19:00 · 386 · 386 recorded · 379 measured · Source: the US BTS 20:00 · 616 · 616 recorded · 610 measured · Source: the US BTS 21:00 · 334 · 334 recorded · 328 measured · Source: the US BTS 22:00 · 178 · 178 recorded · 173 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———
05:0093.9%0.2 min619625
06:0093.2%4.1 min496501
07:0089.0%3.1 min609617
08:0088.6%4.8 min606612
09:0082.4%7.5 min500506
10:0079.6%9.8 min495504
11:0075.2%14.3 min476481
12:0074.7%13.6 min510515
13:0073.3%14.1 min516523
14:0065.0%22.0 min529538
15:0065.6%19.9 min358360
16:0062.1%24.7 min472479
17:0047.2%32.2 min743751
18:0054.3%28.2 min477484
19:0049.3%33.3 min379386
20:0055.4%27.0 min610616
21:0048.5%34.1 min328334
22:00Fewer than 200 measured departures—173178
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 68.5% · 1,415 recorded · 1,401 measured · Source: the US BTS Tuesday · 75.0% · 1,218 recorded · 1,209 measured · Source: the US BTS Wednesday · 77.0% · 1,216 recorded · 1,197 measured · Source: the US BTS Thursday · 68.8% · 1,349 recorded · 1,331 measured · Source: the US BTS Friday · 69.2% · 1,403 recorded · 1,376 measured · Source: the US BTS Saturday · 75.4% · 1,037 recorded · 1,024 measured · Source: the US BTS Sunday · 65.7% · 1,372 recorded · 1,358 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 · 17.7 min · 1,415 recorded · 1,401 measured · Source: the US BTS Tuesday · 14.9 min · 1,218 recorded · 1,209 measured · Source: the US BTS Wednesday · 12.3 min · 1,216 recorded · 1,197 measured · Source: the US BTS Thursday · 18.3 min · 1,349 recorded · 1,331 measured · Source: the US BTS Friday · 19.3 min · 1,403 recorded · 1,376 measured · Source: the US BTS Saturday · 12.9 min · 1,037 recorded · 1,024 measured · Source: the US BTS Sunday · 19.7 min · 1,372 recorded · 1,358 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 · 1,415 · 1,415 recorded · 1,401 measured · Source: the US BTS Tuesday · 1,218 · 1,218 recorded · 1,209 measured · Source: the US BTS Wednesday · 1,216 · 1,216 recorded · 1,197 measured · Source: the US BTS Thursday · 1,349 · 1,349 recorded · 1,331 measured · Source: the US BTS Friday · 1,403 · 1,403 recorded · 1,376 measured · Source: the US BTS Saturday · 1,037 · 1,037 recorded · 1,024 measured · Source: the US BTS Sunday · 1,372 · 1,372 recorded · 1,358 measured · Source: the US BTS

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

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday68.5%17.7 min1,4011,415
Tuesday75.0%14.9 min1,2091,218
Wednesday77.0%12.3 min1,1971,216
Thursday68.8%18.3 min1,3311,349
Friday69.2%19.3 min1,3761,403
Saturday75.4%12.9 min1,0241,037
Sunday65.7%19.7 min1,3581,372

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 · 80.8% · 744 recorded · 744 measured · Source: the US BTS Feb · 76.7% · 658 recorded · 651 measured · Source: the US BTS Mar · 72.3% · 770 recorded · 754 measured · Source: the US BTS Apr · 69.7% · 730 recorded · 715 measured · Source: the US BTS May · 64.5% · 725 recorded · 718 measured · Source: the US BTS Jun · 56.9% · 972 recorded · 961 measured · Source: the US BTS Jul · 60.9% · 1,045 recorded · 1,029 measured · Source: the US BTS Aug · 68.5% · 450 recorded · 448 measured · Source: the US BTS Sep · 79.8% · 405 recorded · 405 measured · Source: the US BTS Oct · 78.2% · 774 recorded · 771 measured · Source: the US BTS Nov · 82.9% · 854 recorded · 822 measured · Source: the US BTS Dec · 71.4% · 883 recorded · 878 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 · 8.5 min · 744 recorded · 744 measured · Source: the US BTS Feb · 11.4 min · 658 recorded · 651 measured · Source: the US BTS Mar · 18.1 min · 770 recorded · 754 measured · Source: the US BTS Apr · 17.6 min · 730 recorded · 715 measured · Source: the US BTS May · 22.1 min · 725 recorded · 718 measured · Source: the US BTS Jun · 26.0 min · 972 recorded · 961 measured · Source: the US BTS Jul · 27.4 min · 1,045 recorded · 1,029 measured · Source: the US BTS Aug · 20.3 min · 450 recorded · 448 measured · Source: the US BTS Sep · 9.8 min · 405 recorded · 405 measured · Source: the US BTS Oct · 10.0 min · 774 recorded · 771 measured · Source: the US BTS Nov · 7.9 min · 854 recorded · 822 measured · Source: the US BTS Dec · 13.6 min · 883 recorded · 878 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 · 744 · 744 recorded · 744 measured · Source: the US BTS Feb · 658 · 658 recorded · 651 measured · Source: the US BTS Mar · 770 · 770 recorded · 754 measured · Source: the US BTS Apr · 730 · 730 recorded · 715 measured · Source: the US BTS May · 725 · 725 recorded · 718 measured · Source: the US BTS Jun · 972 · 972 recorded · 961 measured · Source: the US BTS Jul · 1,045 · 1,045 recorded · 1,029 measured · Source: the US BTS Aug · 450 · 450 recorded · 448 measured · Source: the US BTS Sep · 405 · 405 recorded · 405 measured · Source: the US BTS Oct · 774 · 774 recorded · 771 measured · Source: the US BTS Nov · 854 · 854 recorded · 822 measured · Source: the US BTS Dec · 883 · 883 recorded · 878 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan80.8%8.5 min744744
Feb76.7%11.4 min651658
Mar72.3%18.1 min754770
Apr69.7%17.6 min715730
May64.5%22.1 min718725
Jun56.9%26.0 min961972
Jul60.9%27.4 min1,0291,045
Aug68.5%20.3 min448450
Sep79.8%9.8 min405405
Oct78.2%10.0 min771774
Nov82.9%7.9 min822854
Dec71.4%13.6 min878883

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 70.2% 6,321
  • Delayed >15 min 28.6% 2,575
  • Cancelled 1.3% 114
  • 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

115
115 of 115
Flight numbersBy direction DeparturesOn time
F992210 DEN → MDW 276 70.3%
F992209 MDW → DEN 260 78.7%
WN1320 MDW → DEN 107 73.6%
WN1085 MDW → DEN 103 86.3%
WN2248 MDW → DEN 98 93.9%
WN4514 DEN → MDW 98 71.9%
WN2529 DEN → MDW 91 78.0%
WN419 DEN → MDW 91 82.2%
WN2337 DEN → MDW 86 80.0%
WN4120 MDW → DEN 85 83.5%
WN769 DEN → MDW 71 97.2%
WN2912 DEN → MDW 69 75.0%
WN2235 MDW → DEN 68 94.0%
WN553 DEN → MDW 65 93.8%
WN1095 MDW → DEN 61 75.4%
WN2618 DEN → MDW 61 27.9%
WN2243 DEN → MDW 60 91.5%
WN2611 DEN → MDW 60 86.0%
WN2612 DEN → MDW 60 84.8%
WN2619 DEN → MDW 59 36.2%
WN474 MDW → DEN 59 93.2%
WN1603 DEN → MDW 58 46.4%
WN1646 DEN → MDW 58 79.3%
WN1939 DEN → MDW 58 93.1%
WN1941 DEN → MDW 58 79.0%
WN2314 DEN → MDW 58 82.5%
WN2539 MDW → DEN 58 41.4%
WN2769 MDW → DEN 58 52.6%
WN2815 MDW → DEN 58 75.9%
WN2874 DEN → MDW 58 82.8%
WN2965 MDW → DEN 58 51.7%
WN3262 MDW → DEN 58 96.6%
WN3404 MDW → DEN 58 67.2%
WN3462 DEN → MDW 58 55.2%
WN1590 DEN → MDW 57 41.1%
WN2770 MDW → DEN 57 38.2%
WN2983 MDW → DEN 57 60.7%
WN3789 DEN → MDW 57 50.0%
WN4488 MDW → DEN 57 75.4%
WN755 DEN → MDW 57 80.4%
WN1399 MDW → DEN 55 66.7%
WN1642 MDW → DEN 55 63.0%
WN1323 MDW → DEN 54 66.7%
WN1684 MDW → DEN 53 77.4%
WN3816 MDW → DEN 52 90.2%
WN140 MDW → DEN 51 64.0%
WN2090 DEN → MDW 51 74.5%
WN2615 DEN → MDW 51 52.0%
WN3823 MDW → DEN 51 22.0%
WN1604 DEN → MDW 50 18.0%
WN207 DEN → MDW 50 59.2%
WN2891 DEN → MDW 50 42.0%
WN2960 MDW → DEN 50 68.0%
WN482 DEN → MDW 50 78.0%
WN1450 MDW → DEN 49 77.1%
WN1598 DEN → MDW 49 98.0%
WN2765 MDW → DEN 49 83.7%
WN2989 MDW → DEN 49 98.0%
WN4098 MDW → DEN 49 40.4%
WN675 MDW → DEN 49 62.5%
WN971 MDW → DEN 47 63.0%
F991228 DEN → MDW 46 69.6%
WN2012 MDW → DEN 46 87.0%
WN2614 DEN → MDW 46 56.5%
WN3285 MDW → DEN 46 73.3%
WN2616 DEN → MDW 45 56.8%
F991227 MDW → DEN 43 70.7%
WN2610 DEN → MDW 43 97.7%
WN1454 DEN → MDW 42 56.1%
WN1467 MDW → DEN 42 31.7%
WN1929 MDW → DEN 42 90.2%
WN2142 MDW → DEN 42 95.2%
WN2376 DEN → MDW 42 24.4%
WN2532 DEN → MDW 42 77.5%
WN2537 DEN → MDW 42 47.6%
WN2586 DEN → MDW 42 97.6%
WN3371 MDW → DEN 42 41.5%
WN687 MDW → DEN 42 95.2%
WN818 DEN → MDW 42 70.7%
WN2768 MDW → DEN 41 39.0%
WN3697 MDW → DEN 41 82.1%
WN1465 DEN → MDW 39 35.9%
WN1418 MDW → DEN 38 89.5%
WN4535 MDW → DEN 36 61.8%
WN2135 MDW → DEN 35 88.2%
WN114 DEN → MDW 34 91.2%
WN1601 DEN → MDW 34 35.3%
WN1615 DEN → MDW 34 21.2%
WN1791 MDW → DEN 34 32.4%
WN2900 MDW → DEN 34 88.2%
WN117 MDW → DEN 33 58.1%
WN1376 MDW → DEN 33 93.9%
WN1447 DEN → MDW 33 46.9%
WN1714 MDW → DEN 33 84.9%
WN172 MDW → DEN 33 66.7%
WN1790 DEN → MDW 33 90.9%
WN2115 DEN → MDW 33 86.2%
WN2556 DEN → MDW 33 72.7%
WN2613 DEN → MDW 33 93.6%
WN2700 MDW → DEN 33 57.6%
WN2761 DEN → MDW 33 74.2%
WN3515 MDW → DEN 33 37.5%
WN353 DEN → MDW 33 75.8%
WN1190 MDW → DEN 32 61.3%
WN3046 MDW → DEN 32 84.4%
WN3479 MDW → DEN 32 84.4%
WN4651 DEN → MDW 32 18.8%
WN1478 DEN → MDW 31 93.6%
WN2894 MDW → DEN 31 67.7%
WN3685 MDW → DEN 31 58.1%
WN3246 MDW → DEN 30 76.7%
WN3813 MDW → DEN 30 76.7%
WN3815 MDW → DEN 30 73.3%
WN563 DEN → MDW 30 80.0%
WN927 DEN → MDW 30 34.5%

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 442 −24.7% 5 60.6%
June 2026 414 −24.3% 7 57.2%
May 2026 324 −17.8% 2 66.7%
April 2026 315 −21.3% 7 68.9%
March 2026 327 −23.4% 13 59.9%
February 2026 275 −26.9% 2 71.3%
January 2026 314 −27.0% 0 82.8%
December 2025 388 −20.8% 4 61.1%
November 2025 351 −25.5% 24 78.1%
October 2025 427 +24.1% 0 75.6%
September 2025 405 0 79.8%
August 2025 448 2 68.5%
July 2025 587 11 61.2%
June 2025 547 4 56.7%
May 2025 394 5 62.7%
April 2025 400 8 70.3%
March 2025 427 3 81.7%
February 2025 376 5 80.6%
January 2025 430 0 79.3%
December 2024 490 1 79.6%
November 2024 471 8 86.4%
October 2024 344 3 81.4%

How to read this chart

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