Southwest Airlines
Is WN4157 delayed?
Service date: · Scheduled arrival date; departure time unavailable (America/Los_Angeles)
Estimated arrivalLast reported
6 min late
This update may be out of date. Check with your airline.
Update time unavailable
Departure
St Louis
STL
Scheduled
Not available
Arrival
San Francisco
SFO
Estimated
Scheduled 10:35
Sep 16
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Not available
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Actual
- Not available
STLSFO
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 8 min early
STL → SFO
- 5 min late
STL → SFO
- 59 min late
STL → SFO
- 9 min late
STL → SFO
- 4 min late
STL → SFO
Flight history and details
Aug 17, 2026 — Sep 16, 2026
- Observed arrivals
- 9
- Arrivals over 15 minutes late
- 2
- Observed cancellations
- 0
- Observed occurrences
- 9
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 15, 2026Arrived | St Louis | San Francisco | -8 | |
| Sep 14, 2026Arrived | St Louis | San Francisco | 5 | |
| Sep 11, 2026Arrived | St Louis | San Francisco | 59 | |
| Sep 10, 2026Arrived | St Louis | San Francisco | 9 | |
| Sep 9, 2026Arrived | St Louis | San Francisco | 4 | |
| Sep 8, 2026Arrived | St Louis | San Francisco | -7 | |
| Sep 7, 2026Arrived | St Louis | San Francisco | 49 | |
| Sep 6, 2026Arrived | Burbank | Oakland | -13 | |
| Sep 4, 2026Arrived | St Louis | San Francisco | 1 |