Southwest Airlines
Is WN4120 delayed?
No — WN4120 landed in St Louis on schedule (10 min behind), at 20:14 on Sep 28 (as of Sep 29, 01:14 UTC).
Often late: arrived more than 15 min after schedule on 9 of the last 14 flights.
On schedule (10 min behind)
Official source · Updated
Departure
Dallas
DAL
Actual
Scheduled 18:44
Sep 28
Arrival
St Louis
STL
Actual
Scheduled 20:04
Sep 28
Times shown in airport local time
Service date: · Scheduled departure date (America/Chicago)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- On schedule (10 min behind)
Dallas → St Louis
- 10 min early
Dallas → St Louis
- 81 min late
Dallas → St Louis
- 25 min late
Dallas → St Louis
- 41 min late
Dallas → St Louis
Is WN4120 usually late?
Observation window: Aug 31, 2026 – Sep 30, 2026
On time means arriving no more than 15 minutes after the scheduled time; late means more than 15 minutes after. Cancelled and diverted flights are counted apart from arrivals. Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 28, 2026Arrived | Dallas | St Louis | 10 | |
| Sep 26, 2026Arrived | Dallas | St Louis | -10 | |
| Sep 25, 2026Arrived | Dallas | St Louis | 81 | |
| Sep 24, 2026Arrived | Dallas | St Louis | 25 | |
| Sep 21, 2026Arrived | Dallas | St Louis | 41 | |
| Sep 19, 2026Arrived | Dallas | St Louis | -10 | |
| Sep 18, 2026Arrived | Dallas | St Louis | -1 | |
| Sep 17, 2026Arrived | Dallas | St Louis | 24 | |
| Sep 14, 2026Arrived | Dallas | St Louis | 17 | |
| Sep 12, 2026Arrived | Dallas | St Louis | -14 | |
| Sep 11, 2026Arrived | Dallas | St Louis | 26 | |
| Sep 10, 2026Arrived | Dallas | St Louis | 23 | |
| Sep 7, 2026Arrived | Dallas | St Louis | 24 | |
| Sep 4, 2026Arrived | Dallas | St Louis | 28 |
Email me if WN4120 runs late
We email you if your next WN4120 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.