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WN3904 Flight Status Southwest Airlines: Chicago to St. Louis (SWA3904)

WN 3904 Chicago to St. Louis Flight Status

Southwest Airlines Flight WN3904 from Chicago Midway International Airport MDW to St. Louis Lambert International Airport STL is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on October 26th, 2025.
Check the table below for WN3904's most recent flight history:

WN 3904 Flight Status & Schedule

Date Departure Arrival Status
Oct 26 11:27 12:15
Landed Late
 Track >
Oct 19 11:09 11:53
Landed
 Track >
Oct 12 10:48 11:32
Landed
 Track >
Oct 05 10:55 11:41
Landed
 Track >
< All MDW Departures All STL Arrivals >

Southwest Airlines WN 3904 Chicago to St. Louis Flight Information

Southwest Airlines Flight WN3904 connects Chicago, United States to St. Louis, United States, taking off from Chicago Midway International Airport MDW and landing at St. Louis Lambert International Airport STL.

How long is the WN3904 flight from Chicago to St. Louis?

The average flight time from Chicago to St. Louis is 45 minutes. The flight distance is 404 km / 251 miles and the average flight speed is 534 km/h / 332 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN3904 Chicago to St. Louis?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN3904 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN3904 arriving at?

Flight WN3904 arrives at St. Louis Lambert International Airport (STL) Terminal 2.

When was the latest WN3904 flight?

The latest flight took off on Sunday, October 26th, 2025 with the flight status being Landed on 12:15.

How else can the flight WN3904 be referenced as?

This Southwest Airlines flight can also be referenced as SWA3904, WN 3904, SWA 3904.

How often is flight WN3904 delayed?

On average, 25% of all WN3904 flights are delayed. The average delay is 15 minutes.

Can I get compensation for my delayed or cancelled WN3904 flight or baggage issues?

If your WN3904 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.

See our WN3904 Flight Tracker above for more details.

WN3904 and Chicago MDW to St. Louis STL Flights

Other flights departing from Chicago MDW: WN2888, WN2543, WN1431, G43087

Other flights arriving at St. Louis STL: WN3427, WN492, WN648, 9X465

All flights connecting Chicago MDW to St. Louis STL.

WN3904 Southwest Airlines Flight: Chicago to St. Louis Route Map

WN3904 Southwest Airlines Flight Map: Chicago to St. Louis
Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
New Flights: VJ3025 AT2165 5Y8817 R51400 N84871 9K2052 MX9751 TF9803 7L1737 A84222
See Also: Flight Tracker Airports Airlines News Flights Monitor Delay Compensation
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.