Southwest Airlines
Is WN4127 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled departure date (America/Los_Angeles)
12 min early
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Las Vegas
LAS
Actual
Aug 31
Arrival
Los Angeles
LAX
Estimated
Aug 31
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
- Not available
Service date: · Scheduled departure date (America/New_York)
Cancelled
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Boston
BOS
Scheduled
Aug 31
Arrival
—
—
Scheduled
Not available
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Not available
- Estimated
- Not available
- Actual
- Not available
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 26 min late
LAS → LAX
- 2 min late
LAS → LAX
- 16 min late
LAS → LAX
- 5 min late
LAS → LAX
- 8 min early
LAS → LAX
Flight history and details
Aug 21, 2026 — Sep 20, 2026
- Observed arrivals
- 14
- Arrivals over 15 minutes late
- 4
- Observed cancellations
- 8
- Observed occurrences
- 27
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 18, 2026Arrived | Las Vegas | Los Angeles | 26 | |
| Sep 17, 2026Arrived | Las Vegas | Los Angeles | 2 | |
| Sep 16, 2026Arrived | Las Vegas | Los Angeles | 16 | |
| Sep 14, 2026Arrived | Las Vegas | Los Angeles | 5 | |
| Sep 11, 2026Arrived | Las Vegas | Los Angeles | -8 | |
| Sep 10, 2026Arrived | Las Vegas | Los Angeles | 4 | |
| Sep 9, 2026Arrived | Las Vegas | Los Angeles | -7 | |
| Sep 8, 2026Arrived | Las Vegas | Los Angeles | -5 | |
| Sep 7, 2026Arrived | Las Vegas | Los Angeles | 19 | |
| Sep 4, 2026Arrived | Las Vegas | Los Angeles | -6 | |
| Sep 3, 2026Cancelled | Boston | Not available | Not available | |
| Sep 2, 2026Cancelled | Boston | Not available | Not available | |
| Sep 1, 2026Arrived | Las Vegas | Los Angeles | -3 | |
| Aug 31, 2026Cancelled | Boston | Not available | Not available | |
| Aug 30, 2026Cancelled | Boston | Not available | Not available | |
| Aug 27, 2026Cancelled | Boston | Not available | Not available | |
| Aug 26, 2026Arrived | Las Vegas | Los Angeles | 16 | |
| Aug 26, 2026Cancelled | Boston | Not available | Not available | |
| Aug 25, 2026Arrived | Las Vegas | Los Angeles | -20 | |
| Aug 25, 2026Cancelled | Boston | Not available | Not available | |
| Aug 24, 2026Arrived | Las Vegas | Los Angeles | 5 | |
| Aug 24, 2026Cancelled | Boston | Not available | Not available |