STL → MDWSt Louis to Chicago

live

Direct flights from St Louis (STL) to Chicago (MDW): 30 nonstop departures observed each week across 1 airline. 82% of the last 34 tracked flights arrived within 15 minutes of schedule. The median arrival is on schedule. 1 of the 36 tracked flights was cancelled. The nonstop covers 404 km, an estimated 1 hour 1 minutes in the air. Measured by Pro Flight Search from live flight boards at St Louis and Chicago. Updated 1 November 2026 at 23:41 UTC.

Today, STL → MDW

Sun 1 Nov · local times
  1. 05:45 WN4173Southwest Airlines Left 05:52 +7 Landed 07:35 −20
  2. 10:30 WN287Southwest Airlines Left 10:41 +11 Landed 11:27 −13
  3. 13:05 WN1679Southwest Airlines Left 13:12 +7 Landed 13:56 −14
  4. 19:15 WN4175Southwest Airlines On scheduleT2 MDW 20:20scheduled
  5. · WN4770Southwest Airlines On schedule MDW 22:40scheduled

Checked STL board 15:18 · MDW board 17:41

STL St Louis busy · +16
MDW Chicago smooth · +4
404 km · ~1h 01m est.
dep bank 05:25–22:0030x weekly
Runs reliable · 1 airline · 30x weekly · nonstop
82% on time

of the last 34 tracked STL → MDW flights arrived within 15 minutes

Median arrival delay is −1 min. 1 of 36 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−1 minacross the last 33 arrivals
Flight time~1h 01mestimated from route distance
Weekly departures30x1 direct airline on the leg
Cancelled2.8%recent route rate · 1 of 36

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Southwest Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Southwest AirlinesWN85% on time

Flights WN2888 05:25 Mo Th Fr · WN4096 05:50 Tu We Su · WN4143 10:50 Mo Th Fr · WN1769 10:55 Tu We

History

operated legs · board outcomes
11-01WN1679dep +7 → arr−14
11-01WN287dep +11 → arr−13
11-01WN4173dep +7 → arr−20
10-31WN2720dep +10 → arr−1
10-31WN2721dep +30 → arr+8
10-31WN3425dep +2 → arr−21
10-30LXJ367dep +36 → arr+23
10-30WN269dep +27 → arr+2
10-30WN2888dep +9 → arr−12
10-30WN3357dep +8 → arr−13
10-30WN4099dep +16 → arr−10
10-30WN4143dep +27 → arr−1
10-30WUP670departed+7
10-29PJC60departed+0
10-29WN269dep +20 → arr+1
10-29WN2888dep +9 → arr−11
10-29WN3357dep +3 → arr−16
10-29WN4099dep +32 → arr+6
10-29WN4143dep +13 → arr−11
10-28WN1769dep +40 → arr+17
10-28WN269dep +10 → arr−8
10-28WN4096dep +10 → arr−9
10-28WN4099dep +6 → arr−18
10-28WN983dep +25 → arr+11
10-27WN1769cancelledCNX
10-27WN269dep +79 → arr+58
10-27WN4096dep +56 → arr+33
10-27WN4099dep +4 → arr−26
10-27WN983dep +37 → arr+16
10-26WN269dep +28 → arr+5
10-26WN2888dep +14 → arr−8
10-26WN3357dep +25 → arr+1
10-26WN4099arrived−6
10-26WN4143dep +45 → arr+15
10-25WN1722arrived+7
10-25WN2129arrived+4

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
STLSt Louis +16 min busy ⛅ overcast · ESE 10 kt Full STL delay board →
MDWChicago +4 min smooth 🌤 mostly cloudy · ENE 6 kt Full MDW delay board →

Weather lens

Conditions are tightest at STL and MDW: a 42% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +10 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →

How the St Louis to Chicago route actually runs

Pro Flight Search records official board updates for nonstop STL to MDW flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: St Louis (STL) to Chicago (MDW) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/STL-MDW
How we measure this →

STL to MDW questions

Is STL–MDW running on time right now?

Mostly on schedule. The departure side at STL is the weaker end, route health score 75/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on STL–MDW?

Operators schedule morning departures around 05:25 and evening departures around 18:10 from STL. Earlier flights typically land before destination-airport delays accumulate later in the day; check the MDW delay card to confirm conditions when you'd arrive.

How long is the flight from STL to MDW?

Great-circle distance is 404 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 59–65 min gate-to-gate on this route.

How often does STL–MDW fly?

Southwest Airlines runs the route with about 30 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.