| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jan 04 | MDW | STL | 22:58 | 23:40 |
Landed
|
Track > |
| Jan 03 | MDW | STL | 20:33 | 21:16 |
Landed
|
Track > |
| Jan 02 | MDW | STL | 23:26 | 00:05 |
Landed
|
Track > |
| Dec 30 | MDW | STL | 00:03 | 00:05 |
Unknown
|
Track > |
| Dec 29 | MDW | STL | 23:02 | 23:44 |
Landed
|
Track > |
| Dec 28 | MDW | STL | 23:21 | 00:14 |
Landed
|
Track > |
| Dec 27 | MDW | STL | 21:32 | 22:17 |
Landed Late
|
Track > |
| Dec 26 | MDW | STL | 22:58 | 23:42 |
Landed
|
Track > |
| Dec 23 | MDW | STL | 22:57 | 23:39 |
Landed
|
Track > |
| Dec 22 | MDW | STL | 23:00 | 23:44 |
Landed
|
Track > |
Southwest Airlines Flight WN4503 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 WN4503 flight from Chicago to St. Louis?
The average flight time from Chicago to St. Louis is 43 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 WN4503 Chicago to St. Louis?
The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4503 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight WN4503 arriving at?
Flight WN4503 arrives at St. Louis Lambert International Airport (STL) Terminal 2.
When was the latest WN4503 flight?
The latest flight took off on Monday, January 5th, 2026 with the flight status being Landed on 23:40.
How else can the flight WN4503 be referenced as?
This Southwest Airlines flight can also be referenced as SWA4503, WN 4503, SWA 4503.
How often is flight WN4503 delayed?
On average, 20% of all WN4503 flights are delayed. The average delay is 28 minutes.
Can I get compensation for my delayed or cancelled WN4503 flight or baggage issues?
If your WN4503 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 WN4503 Flight Tracker above for more details.
Other flights departing from Chicago MDW: F91227, WN3292, WN2583, WN4557
Other flights arriving at St. Louis STL: AA855, WN1231, WN1357, WN4156
All flights connecting Chicago MDW to St. Louis STL.