MDW → STLChicago to St Louis

live

Direct flights from Chicago (MDW) to St Louis (STL): 7 nonstop departures observed each week across 1 airline. 67% of the last 9 operated flights arrived within 15 minutes of schedule. The median arrival is 11 minutes late. No cancellations were recorded across the 9 tracked flights. The nonstop covers 404 km, an estimated 1 hour 1 minutes in the air. Measured by Pro Flight Search from live flight boards at Chicago and St Louis. Updated 18 October 2026 at 03:31 UTC.

Today, MDW → STL

Sat 17 Oct · local times
  1. 11:25 WN806Southwest Left 11:45 +20 Landed 12:38 +3
  2. 19:10 WN670Southwest Left 19:34 +24 Landed 20:36 +11

Checked MDW board 22:31 · STL board 22:18

MDW Chicago heavy · +49
STL St Louis smooth · +14
404 km · ~1h 01m est.
dep bank 07:50–22:057x weekly
Runs mixed · 1 airline · 7x weekly · nonstop
67% on time

of the last 9 operated MDW → STL flights arrived within 15 minutes

Median arrival delay is +11 min. 0 of 9 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+11 minacross the last 9 operated legs
Flight time~1h 01mestimated from route distance
Weekly departures7x1 direct airline on the leg

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 AirlinesWN67% on time

Flights WN3555 07:50 Mo Th Fr · WN1353 08:05 Tu We · WN372 08:15 Su · WN846 09:40 Tu We

History

operated legs · board outcomes
10-17WN670dep +24 → arr+11
10-17WN806dep +20 → arr+3
10-16WN1687dep +81 → arr+52
10-16WN3555dep +14 → arr+6
10-16WN4699dep +7 → arr−13
10-16WN806dep +27 → arr+15
10-16WN884dep +92 → arr+78
10-15WN1687departed+58
10-15WN3555departed−3

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
MDWChicago +49 min heavy 🌤 clear · SSW 6 kt Full MDW delay board →
STLSt Louis +14 min smooth 🌤 clear · N 0 kt Full STL delay board →

Weather lens

Current conditions put the pressure at MDW and STL: 43% odds of a 15+ minute delay and around +9 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Chicago to St Louis route actually runs

Pro Flight Search records official board updates for nonstop MDW to STL 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 — Chicago (MDW) to St Louis (STL) route reliability, measured from operated flights on official airport boards.

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

MDW to STL questions

Is MDW–STL running on time right now?

Some delays possible. The departure side at MDW is the weaker end, route health score 58/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on MDW–STL?

Operators schedule morning departures around 07:50 and evening departures around 17:50 from MDW. Earlier flights typically land before destination-airport delays accumulate later in the day; check the STL delay card to confirm conditions when you'd arrive.

How long is the flight from MDW to STL?

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 MDW–STL fly?

Southwest Airlines runs the route with about 31 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.