WN3143 Southwest Airlines - Flight Status

Which is the frequency of flight WN3143?
The flight WN3143 is scheduled to flight on Monday, Tuesday, Wednesday, Thursday, Sunday on a weekly basis.

Which is the distance of flight WN3143?
The distance between the two airports is 718 miles.

Which is the flight time of flight WN3143?
The scheduled flight time gate to gate is: 02:35 hours.
The real flight time gate to gate on average is: 02:23 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 Washington: 2026-03-13 10:31:33
Current Time in Saint Louis: 2026-03-13 09:31:33

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

American Airlines
- Flight Number: AA4484. (On Time performance: 75 - Average Delay: 19 minutes)
- Flight Number: AA5269. (On Time performance: 50 - Average Delay: 52 minutes)
- Flight Number: AA5398. (On Time performance: 72 - Average Delay: 16 minutes)
- Flight Number: AA5677. (On Time performance: 83 - Average Delay: 21 minutes)

Southwest Airlines
- Flight Number: WN1384. (On Time performance: 63 - Average Delay: 14 minutes)
- Flight Number: WN1386. (On Time performance: 77 - Average Delay: 16 minutes)
- Flight Number: WN2140. (On Time performance: 85 - Average Delay: 26 minutes)
- Flight Number: WN2359. (On Time performance: 80 - Average Delay: 6 minutes)
- Flight Number: WN2411.
- Flight Number: WN2852. (On Time performance: 86 - Average Delay: 9 minutes)
- Flight Number: WN3151. (On Time performance: 80 - Average Delay: -5 minutes)
- Flight Number: WN4075.
- Flight Number: WN432. (On Time performance: 100 - Average Delay: 1 minutes)
- Flight Number: WN967. (On Time performance: 50 - Average Delay: 12 minutes)
- Flight Number: WN993. (On Time performance: 93 - Average Delay: 5 minutes)

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

Delays analyzed by Weekday: We have gathered available data from last six months, spanning from January 06, 2026 to March 04, 2026. Next, you can observe the results broken down by day of the week: number of flights analyzed, on-time performance per day, and average delay per day.

Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from January 06, 2026 to February 25, 2026. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.