Southwest Airlines
Is WN4437 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled departure date (America/Los_Angeles)
22 min late
Official source · Updated
Departure
San Diego
SAN
Actual
Sep 14
Arrival
Las Vegas
LAS
Actual
Sep 14
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Service date: · Scheduled departure date (UTC)
13 min late
Official source · Updated
Departure
Sacramento
SMF
Scheduled
Sep 14
Arrival
San Diego
SAN
Actual
Sep 14
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
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.
- 22 min late
SAN → LAS
- 13 min late
SMF → SAN
- 62 min late
SAN → LAS
- 58 min late
SMF → SAN
- 24 min late
SAN → LAS
Flight history and details
Aug 18, 2026 — Sep 17, 2026
- Observed arrivals
- 13
- Arrivals over 15 minutes late
- 12
- Observed cancellations
- 0
- Observed occurrences
- 14
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 | San Diego | Las Vegas | 22 | |
| Sep 14, 2026Arrived | Sacramento | San Diego | 13 | |
| Sep 11, 2026Arrived | San Diego | Las Vegas | 62 | |
| Sep 11, 2026Arrived | Sacramento | San Diego | 58 | |
| Sep 10, 2026Arrived | San Diego | Las Vegas | 24 | |
| Sep 7, 2026Arrived | San Diego | Las Vegas | 126 | |
| Sep 8, 2026Arrived | Sacramento | San Diego | 63 | |
| Sep 4, 2026Arrived | San Diego | Las Vegas | 205 | |
| Sep 4, 2026Arrived | Sacramento | San Diego | 209 | |
| Aug 31, 2026Arrived | San Diego | Las Vegas | 41 | |
| Aug 28, 2026Arrived | San Diego | Las Vegas | 33 | |
| Aug 27, 2026Arrived | San Diego | Las Vegas | 69 | |
| Aug 24, 2026Arrived | San Diego | Las Vegas | 16 |