Southwest Airlines
Is SWA4120 delayed?
Service date: · Scheduled departure date (UTC)
Arrived
17 min late
Official source · Updated
Departure
Dallas
DAL
Actual
Scheduled 23:44
Sep 15
Arrival
St Louis
STL
Actual
Scheduled 01:04
Sep 15
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
DALSTL
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 17 min late
DAL → STL
- 14 min early
DAL → STL
- 26 min late
DAL → STL
- 23 min late
DAL → STL
- 24 min late
DAL → STL
Flight history and details
Aug 17, 2026 — Sep 16, 2026
- Observed arrivals
- 6
- Arrivals over 15 minutes late
- 5
- Observed cancellations
- 0
- Observed occurrences
- 6
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 14, 2026Arrived | Dallas | St Louis | 17 | |
| Sep 13, 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 |