| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Oct 31 | BWI | STL | 17:31 | 18:22 |
Landed
|
Track > |
| Oct 29 | BWI | STL | 18:52 | 19:36 |
Landed
|
Track > |
| Oct 28 | BWI | STL | 19:03 | 19:55 |
Landed
|
Track > |
| Oct 22 | BWI | STL | 19:30 | 20:25 |
Landed Late
|
Track > |
| Oct 21 | BWI | STL | 18:44 | 19:44 |
Landed
|
Track > |
| Oct 15 | BWI | STL | 19:09 | 19:59 |
Landed
|
Track > |
| Oct 14 | BWI | STL | 18:59 | 19:47 |
Landed
|
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| Oct 08 | BWI | STL | 18:57 | 19:54 |
Landed
|
Track > |
| Oct 07 | BWI | STL | 18:47 | 19:40 |
Landed
|
Track > |
Southwest Airlines Flight WN420 connects Baltimore, United States to St. Louis, United States, taking off from Baltimore Washington International Airport BWI and landing at St. Louis Lambert International Airport STL.
How long is the WN420 flight from Baltimore to St. Louis?
The average flight time from Baltimore to St. Louis is 1 hour and 52 minutes. The flight distance is 1184 km / 736 miles and the average flight speed is 634 km/h / 394 mph.
What is the On-Time Performance (OTP) of Southwest Airlines Flight WN420 Baltimore to St. Louis?
The Airportia On-Time Performance Rating for Southwest Airlines Flight WN420 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight WN420 arriving at?
Flight WN420 arrives at St. Louis Lambert International Airport (STL) Terminal 2.
When was the latest WN420 flight?
The latest flight took off on Friday, October 31st, 2025 with the flight status being Landed on 18:22.
How else can the flight WN420 be referenced as?
This Southwest Airlines flight can also be referenced as SWA420, WN0420, WN 420, SWA 420.
How often is flight WN420 delayed?
On average, 44% of all WN420 flights are delayed. The average delay is 13 minutes.
Can I get compensation for my delayed or cancelled WN420 flight or baggage issues?
If your WN420 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 WN420 Flight Tracker above for more details.
Other flights departing from Baltimore BWI: WN1885, WN1926, WN3840, 8C3585
Other flights arriving at St. Louis STL: AA3562, WN2347, WN1408, WN1563
All flights connecting Baltimore BWI to St. Louis STL.
