Informational Guide to Philadelphia Airport - PHL - NON OFFICIAL

WN4143 Southwest Airlines - Flight Status

Below, you can find details about Southwest Airlines flight WN4143, which currently operates between the airports of Philadelphia - Philadelphia International Airport (Airport Code PHL) and Saint Louis - St Louis Lambert International Airport (Airport Code STL).
This flight data pertains specifically to the flight's details for Friday, October 10, 2025.

WN4143 On Time performance:
83
We have calculated the percentage of flights that arrived within 15 minutes of their scheduled time, or earlier, based on real flight data from the last 3 months. More about punctuality and delays

Flight Status

WN4143 Southwest Airlines to Saint Louis

Landed - On-time
Delay: 14 minutes
Flight Status for Friday October 10, 2025
This flight is also scheduled for Tomorrow (October 12, 2025). See it here

Airline information

Southwest Airlines
Southwest Airlines
Equipment: Boeing 737MAX 8 Passenger

Departure

Philadelphia (PHL)
October 10, 2025
Philadelphia International Airport
Departed at:
08:03 pm
Terminal:
E
Gate:
E12
Scheduled Departure Time: 08:05 pm

Arrival

Saint Louis (STL)
October 10, 2025
St Louis Lambert International Airport
Arrived at:
09:49 pm
Terminal:
2
Gate:
E36
Scheduled Arrival Time: 09:35 pm
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.philadelphia-airport.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.

Additional Information

Which is the frequency of flight WN4143?
The flight WN4143 is scheduled to flight on Monday, Tuesday, Wednesday, Thursday, Friday, Sunday on a weekly basis.

Which is the distance of flight WN4143?
The distance between the two airports is 812 miles.

Which is the flight time of flight WN4143?
The scheduled flight time gate to gate is: 02:30 hours.
The real flight time gate to gate on average is: 02:17 hours.

Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Philadelphia: 2025-10-11 14:44:34
Current Time in Saint Louis: 2025-10-11 13:44:34

Alternative Flights

The following airlines serves the same route between Philadelphia and Saint Louis:

American Airlines
- Flight Number: AA1368. (On Time performance: 68 - Average Delay: 21 minutes)
- Flight Number: AA1379. (On Time performance: 65 - Average Delay: 15 minutes)
- Flight Number: AA1739.
- Flight Number: AA2275. (On Time performance: 80 - Average Delay: 12 minutes)
- Flight Number: AA2571. (On Time performance: 54 - Average Delay: 59 minutes)
- Flight Number: AA3049.

Southwest Airlines
- Flight Number: WN106. (On Time performance: 81 - Average Delay: 11 minutes)
- Flight Number: WN1738. (On Time performance: 86 - Average Delay: 4 minutes)
- Flight Number: WN3517. (On Time performance: 88 - Average Delay: 14 minutes)

Punctuality and delays

We have gathered data from recent months and present below an analysis of how timely the flights have been.

In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from October 02, 2025 to October 08, 2025, we have obtained these figures.
Total number of flights: 6
On Time: 5 ( 83 % )
Moderate Delay: 1 ( 17 % )
Significant Delay: 0 ( 0 % )
Major Delay: 0 ( 0 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 6 minutes.
Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions

Last Past Flights WN4143

Date
Departure
Arrival
Duration
Aircraft
Status
Friday
10 October
08:03 pm
Philadelphia (PHL)
09:49 pm
Saint Louis (STL)
02h 46min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Thursday
09 October
08:13 pm
Philadelphia (PHL)
09:45 pm
Saint Louis (STL)
02h 32min
Boeing 737-800
Boeing 737-800
Landed - On-time
Wednesday
08 October
08:14 am
Philadelphia (PHL)
09:41 am
Saint Louis (STL)
02h 27min
Boeing 737-700
Boeing 737-700
Landed - On-time
Tuesday
07 October
08:23 am
Philadelphia (PHL)
09:52 am
Saint Louis (STL)
02h 29min
Boeing 737-700
Boeing 737-700
Landed - Delayed
Monday
06 October
07:58 pm
Philadelphia (PHL)
09:13 pm
Saint Louis (STL)
02h 15min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Sunday
05 October
08:17 pm
Philadelphia (PHL)
09:27 pm
Saint Louis (STL)
02h 10min
Boeing 737-700
Boeing 737-700
Landed - On-time
Friday
03 October
08:48 pm
Philadelphia (PHL)
09:49 pm
Saint Louis (STL)
02h 01min
Boeing 737MAX
Boeing 737MAX
Landed - On-time
Thursday
02 October
08:10 pm
Philadelphia (PHL)
09:29 pm
Saint Louis (STL)
02h 19min
Boeing 737-800
Boeing 737-800
Landed - On-time