WN3865 Flight Status Southwest Airlines: St. Louis to Chicago (SWA3865)

Are you looking for the November 3rd, 2026 WN 3865 Baltimore to Buffalo flight? Go to our WN3865 Baltimore to Buffalo Flight Status page >

WN 3865 St. Louis to Chicago Flight Status

Not scheduled today (November 3rd, 2026). Latest flight: September 30th, 2026 ; recent history is in the table below.

WN 3865 Flight Status & Schedule Southwest Airlines St. Louis to Chicago

Date From To Departure Arrival Status Details
Sep 30 STL MDW 20:50 21:33 Landed Track >
Sep 29 STL MDW 20:56 21:40 Landed Track >
Sep 28 STL MDW 20:57 21:39 Landed Track >
Sep 25 STL MDW 20:52 21:35 Landed Track >
Sep 24 STL MDW 22:23 23:06 Delayed Track >
Sep 23 STL MDW 21:07 21:50 Landed Track >
Sep 22 STL MDW 21:11 21:54 Landed Track >
Sep 21 STL MDW 20:54 21:34 Landed Track >
Sep 18 STL MDW 21:10 21:50 Landed Track >
Sep 17 STL MDW 21:50 22:31 Landed Late Track >

Southwest Airlines operates WN 3865 from St. Louis to Chicago, a 404 km (251 mi) trip. The timetable allows 1 h 10 min, but the flight usually takes about 45 min, so it often makes up time. It is not flying today; the last flight, on 30 September 2026, landed on time.

< All St. Louis STL Departures All Chicago MDW Arrivals >

About WN 3865

Route
St. Louis Lambert International Airport STL to Chicago Midway International Airport MDW
Distance
404 km (251 mi)
Typical flight time
45 min
On time
8 of the last 9
Average delay when late
31 min
Usually departs from
Terminal 2

WN 3865 FAQ

How long is the WN3865 flight?
The timetable allows 1 h 10 min. St. Louis to Chicago is 404 km (251 mi).
How often is WN3865 late?
1 of the last 9 flights arrived 15 or more minutes late; when late, by 31 minutes on average.
Which terminal does WN3865 use?
It usually leaves from Terminal 2 at St. Louis Lambert International Airport (STL). Check the flight card above for today's terminal and gate.
What other flight numbers does WN3865 have?
Also listed as SWA3865 (Southwest Airlines' ICAO code) and WN 3865.

WN3865 and St. Louis STL to Chicago MDW Flights

Other flights departing from St. Louis STL: WN3821, WN3843, WN3955, WN4166

Other flights arriving at Chicago MDW: WN4978, WN1429, WN2679, WN4549

All flights connecting St. Louis STL to Chicago MDW.