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2,021 km · Domestic

Chicago Midway (MDW) – Salt Lake City (SLC)

In July 2026, 115 flights operated between Chicago Midway and Salt Lake City (both directions), and 72.2% 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
January11277▼ 31.3%
February10892▼ 14.8%
March124114▼ 8.1%
April108111▲ 2.8%
May105112▲ 6.7%
June110112▲ 1.8%
July112115▲ 2.7%
August112––
September112––
October114–in progress
November67––
December84––
Year to date (Jan–Jul)779733▼ 5.9%

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
January83.9%92.2%▲ 9.9%
February71.3%89.1%▲ 25.0%
March81.5%62.3%▼ 23.6%
April91.7%71.2%▼ 22.4%
May81.9%68.8%▼ 16.0%
June63.6%63.4%▼ 0.3%
July74.1%72.2%▼ 2.6%
August82.1%––
September84.8%––
October85.1%–in progress
November88.1%––
December75.0%––
Year-to-date average (Jan–Jul)78.3%74.2%▼ 5.3%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January01–
February00–
March06–
April03–
May00–
June00–
July21▼ 50.0%
August2––
September0––
October0–in progress
November3––
December0––
Year to date (Jan–Jul)211▲ 450.0%

By direction

MDW → SLC

Scheduled flights
1,136
Flights operated
1,123
Cancelled
13 · 1.1%
On-time departures
74.4%

SLC → MDW

Scheduled flights
1,135
Flights operated
1,130
Cancelled
5 · 0.4%
On-time departures
82.3%

MDW → SLC and SLC → MDW counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Southwest Airlines WN 2,271 100.0% 78.4% 18

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 delay05:00–06:00-0.1min · 208 recorded · 207 measured
Gap to highest-delay hour28.1min05:00 ↔ 21:00
Recorded flights2,271MDW–SLC

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 · 96.1% · 208 recorded · 207 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 85 recorded · 83 measured · Source: the US BTS 07:00 · 92.2% · 322 recorded · 321 measured · Source: the US BTS 08:00 · 92.7% · 315 recorded · 315 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 98 recorded · 98 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 182 recorded · 182 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 22 recorded · 22 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 55 recorded · 55 measured · Source: the US BTS 13:00 · 67.0% · 206 recorded · 206 measured · Source: the US BTS 14:00 · 66.3% · 204 recorded · 202 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 77 recorded · 77 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 35 recorded · 35 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 28 recorded · 28 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 9 recorded · 8 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 20 recorded · 20 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 88 recorded · 84 measured · Source: the US BTS 21:00 · 48.3% · 211 recorded · 205 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 106 recorded · 105 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 · -0.1 min · 208 recorded · 207 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 85 recorded · 83 measured · Source: the US BTS 07:00 · 3.1 min · 322 recorded · 321 measured · Source: the US BTS 08:00 · 2.9 min · 315 recorded · 315 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 98 recorded · 98 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 182 recorded · 182 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 22 recorded · 22 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 55 recorded · 55 measured · Source: the US BTS 13:00 · 13.0 min · 206 recorded · 206 measured · Source: the US BTS 14:00 · 15.8 min · 204 recorded · 202 measured · Source: the US BTS 15:00 · Fewer than 200 measured departures · 77 recorded · 77 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 35 recorded · 35 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 28 recorded · 28 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 9 recorded · 8 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 20 recorded · 20 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 88 recorded · 84 measured · Source: the US BTS 21:00 · 28.0 min · 211 recorded · 205 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 106 recorded · 105 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 · 208 · 208 recorded · 207 measured · Source: the US BTS 06:00 · 85 · 85 recorded · 83 measured · Source: the US BTS 07:00 · 322 · 322 recorded · 321 measured · Source: the US BTS 08:00 · 315 · 315 recorded · 315 measured · Source: the US BTS 09:00 · 98 · 98 recorded · 98 measured · Source: the US BTS 10:00 · 182 · 182 recorded · 182 measured · Source: the US BTS 11:00 · 22 · 22 recorded · 22 measured · Source: the US BTS 12:00 · 55 · 55 recorded · 55 measured · Source: the US BTS 13:00 · 206 · 206 recorded · 206 measured · Source: the US BTS 14:00 · 204 · 204 recorded · 202 measured · Source: the US BTS 15:00 · 77 · 77 recorded · 77 measured · Source: the US BTS 16:00 · 35 · 35 recorded · 35 measured · Source: the US BTS 17:00 · 28 · 28 recorded · 28 measured · Source: the US BTS 18:00 · 9 · 9 recorded · 8 measured · Source: the US BTS 19:00 · 20 · 20 recorded · 20 measured · Source: the US BTS 20:00 · 88 · 88 recorded · 84 measured · Source: the US BTS 21:00 · 211 · 211 recorded · 205 measured · Source: the US BTS 22:00 · 106 · 106 recorded · 105 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———
05:0096.1%-0.1 min207208
06:00Fewer than 200 measured departures—8385
07:0092.2%3.1 min321322
08:0092.7%2.9 min315315
09:00Fewer than 200 measured departures—9898
10:00Fewer than 200 measured departures—182182
11:00Fewer than 200 measured departures—2222
12:00Fewer than 200 measured departures—5555
13:0067.0%13.0 min206206
14:0066.3%15.8 min202204
15:00Fewer than 200 measured departures—7777
16:00Fewer than 200 measured departures—3535
17:00Fewer than 200 measured departures—2828
18:00Fewer than 200 measured departures—89
19:00Fewer than 200 measured departures—2020
20:00Fewer than 200 measured departures—8488
21:0048.3%28.0 min205211
22:00Fewer than 200 measured departures—105106
23:00No observations———

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 80.1% · 348 recorded · 342 measured · Source: the US BTS Tuesday · 78.2% · 332 recorded · 330 measured · Source: the US BTS Wednesday · 79.5% · 326 recorded · 326 measured · Source: the US BTS Thursday · 77.7% · 343 recorded · 340 measured · Source: the US BTS Friday · 79.3% · 350 recorded · 347 measured · Source: the US BTS Saturday · 79.4% · 248 recorded · 247 measured · Source: the US BTS Sunday · 74.8% · 324 recorded · 321 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 · 9.5 min · 348 recorded · 342 measured · Source: the US BTS Tuesday · 9.5 min · 332 recorded · 330 measured · Source: the US BTS Wednesday · 8.6 min · 326 recorded · 326 measured · Source: the US BTS Thursday · 11.4 min · 343 recorded · 340 measured · Source: the US BTS Friday · 10.0 min · 350 recorded · 347 measured · Source: the US BTS Saturday · 7.6 min · 248 recorded · 247 measured · Source: the US BTS Sunday · 12.8 min · 324 recorded · 321 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 · 348 · 348 recorded · 342 measured · Source: the US BTS Tuesday · 332 · 332 recorded · 330 measured · Source: the US BTS Wednesday · 326 · 326 recorded · 326 measured · Source: the US BTS Thursday · 343 · 343 recorded · 340 measured · Source: the US BTS Friday · 350 · 350 recorded · 347 measured · Source: the US BTS Saturday · 248 · 248 recorded · 247 measured · Source: the US BTS Sunday · 324 · 324 recorded · 321 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday80.1%9.5 min342348
Tuesday78.2%9.5 min330332
Wednesday79.5%8.6 min326326
Thursday77.7%11.4 min340343
Friday79.3%10.0 min347350
Saturday79.4%7.6 min247248
Sunday74.8%12.8 min321324

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 · Fewer than 200 measured departures · 190 recorded · 189 measured · Source: the US BTS Feb · 79.5% · 200 recorded · 200 measured · Source: the US BTS Mar · 72.3% · 244 recorded · 238 measured · Source: the US BTS Apr · 81.3% · 222 recorded · 219 measured · Source: the US BTS May · 75.1% · 217 recorded · 217 measured · Source: the US BTS Jun · 63.5% · 222 recorded · 222 measured · Source: the US BTS Jul · 73.1% · 230 recorded · 227 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 114 recorded · 112 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 112 recorded · 112 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 186 recorded · 186 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 164 recorded · 161 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 170 recorded · 170 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 · Fewer than 200 measured departures · 190 recorded · 189 measured · Source: the US BTS Feb · 8.1 min · 200 recorded · 200 measured · Source: the US BTS Mar · 11.0 min · 244 recorded · 238 measured · Source: the US BTS Apr · 8.1 min · 222 recorded · 219 measured · Source: the US BTS May · 11.6 min · 217 recorded · 217 measured · Source: the US BTS Jun · 20.2 min · 222 recorded · 222 measured · Source: the US BTS Jul · 17.1 min · 230 recorded · 227 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 114 recorded · 112 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 112 recorded · 112 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 186 recorded · 186 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 164 recorded · 161 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 170 recorded · 170 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 · 190 · 190 recorded · 189 measured · Source: the US BTS Feb · 200 · 200 recorded · 200 measured · Source: the US BTS Mar · 244 · 244 recorded · 238 measured · Source: the US BTS Apr · 222 · 222 recorded · 219 measured · Source: the US BTS May · 217 · 217 recorded · 217 measured · Source: the US BTS Jun · 222 · 222 recorded · 222 measured · Source: the US BTS Jul · 230 · 230 recorded · 227 measured · Source: the US BTS Aug · 114 · 114 recorded · 112 measured · Source: the US BTS Sep · 112 · 112 recorded · 112 measured · Source: the US BTS Oct · 186 · 186 recorded · 186 measured · Source: the US BTS Nov · 164 · 164 recorded · 161 measured · Source: the US BTS Dec · 170 · 170 recorded · 170 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanFewer than 200 measured departures—189190
Feb79.5%8.1 min200200
Mar72.3%11.0 min238244
Apr81.3%8.1 min219222
May75.1%11.6 min217217
Jun63.5%20.2 min222222
Jul73.1%17.1 min227230
AugFewer than 200 measured departures—112114
SepFewer than 200 measured departures—112112
OctFewer than 200 measured departures—186186
NovFewer than 200 measured departures—161164
DecFewer than 200 measured departures—170170

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 77.8% 1,766
  • Delayed >15 min 21.4% 487
  • Cancelled 0.8% 18
  • 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

31
31 of 31
Flight numbersBy direction DeparturesOn time
WN235 SLC → MDW 112 93.8%
WN3116 MDW → SLC 109 79.8%
WN4773 MDW → SLC 80 78.8%
WN2646 SLC → MDW 73 65.8%
WN1470 MDW → SLC 64 85.7%
WN2842 SLC → MDW 61 85.0%
WN2707 MDW → SLC 60 63.3%
WN2899 SLC → MDW 58 54.4%
WN416 MDW → SLC 57 82.5%
WN435 MDW → SLC 57 75.0%
WN4050 SLC → MDW 53 98.1%
WN2052 MDW → SLC 51 48.0%
WN4541 SLC → MDW 51 74.5%
WN1699 SLC → MDW 50 90.0%
WN2666 SLC → MDW 50 86.0%
WN2951 MDW → SLC 50 90.0%
WN2081 MDW → SLC 49 49.0%
WN2071 SLC → MDW 48 89.6%
WN2540 MDW → SLC 47 93.6%
WN1681 MDW → SLC 42 95.2%
WN3750 SLC → MDW 42 47.6%
WN897 MDW → SLC 42 69.1%
WN3749 SLC → MDW 41 100.0%
WN2015 SLC → MDW 35 94.1%
WN1585 MDW → SLC 33 69.7%
WN296 MDW → SLC 33 93.9%
WN4471 SLC → MDW 33 87.5%
WN744 MDW → SLC 33 72.7%
WN866 MDW → SLC 33 37.0%
WN1917 SLC → MDW 32 93.8%
WN3897 SLC → MDW 30 90.0%

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 115 +2.7% 1 72.2%
June 2026 112 +1.8% 0 63.4%
May 2026 112 +6.7% 0 68.8%
April 2026 111 +2.8% 3 71.2%
March 2026 114 −8.1% 6 62.3%
February 2026 92 −14.8% 0 89.1%
January 2026 77 −31.3% 1 92.2%
December 2025 84 −2.3% 0 75.0%
November 2025 67 −28.7% 3 88.1%
October 2025 114 +58.3% 0 85.1%
September 2025 112 0 84.8%
August 2025 112 2 82.1%
July 2025 112 2 74.1%
June 2025 110 0 63.6%
May 2025 105 0 81.9%
April 2025 108 0 91.7%
March 2025 124 0 81.5%
February 2025 108 0 71.3%
January 2025 112 0 83.9%
December 2024 86 0 80.2%
November 2024 94 0 89.4%
October 2024 72 0 87.5%

How to read this chart

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