| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jan 01 | STL | PHL | 08:21 | 11:08 |
Landed
|
Track > |
| Dec 31 | STL | PHL | 08:19 | 11:05 |
Landed
|
Track > |
| Dec 25 | STL | PHL | 08:17 | 10:58 |
Landed
|
Track > |
| Dec 24 | STL | PHL | 08:13 | 10:57 |
Landed
|
Track > |
| Dec 17 | STL | PHL | 08:31 | 11:15 |
Landed
|
Track > |
| Dec 16 | STL | PHL | 08:15 | 11:03 |
Landed
|
Track > |
| Dec 15 | STL | PHL | 08:21 | 11:06 |
Landed
|
Track > |
| Dec 11 | STL | PHL | 08:20 | 11:08 |
Landed
|
Track > |
| Dec 10 | STL | PHL | 08:41 | 11:24 |
Landed
|
Track > |
| Dec 09 | STL | PHL | 08:25 | 11:07 |
Landed
|
Track > |
Southwest Airlines Flight WN420 connects St. Louis, United States to Philadelphia, United States, taking off from St. Louis Lambert International Airport STL and landing at Philadelphia International Airport PHL.
How long is the WN420 flight from St. Louis to Philadelphia?
The average flight time from St. Louis to Philadelphia is 1 hour and 44 minutes. The flight distance is 1306 km / 811 miles and the average flight speed is 748 km/h / 465 mph.
What is the On-Time Performance (OTP) of Southwest Airlines Flight WN420 St. Louis to Philadelphia?
The Airportia On-Time Performance Rating for Southwest Airlines Flight WN420 is 5/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight WN420 arriving at?
Flight WN420 arrives at Philadelphia International Airport (PHL) Terminal E.
When was the latest WN420 flight?
The latest flight took off on Thursday, January 1st, 2026 with the flight status being Landed on 11:08.
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, 0% of all WN420 flights are delayed. The average delay is 0 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 St. Louis STL: WN378, WN1260, WN2683, WN2703
Other flights arriving at Philadelphia PHL: SY1775, AA2135, AA4759, AA5917
All flights connecting St. Louis STL to Philadelphia PHL.