Southwest Airlines
Is WN4555 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled departure date (America/Los_Angeles)
<1 min early
Official source · Updated
Departure
Las Vegas
LAS
Actual
Sep 15
Arrival
Washington
DCA
Actual
Sep 15
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)
14 min late
Official source · Updated
Departure
Sacramento
SMF
Scheduled
Sep 15
Arrival
Las Vegas
LAS
Actual
Sep 15
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.
- 13 min late
LAS → DCA
- 6 min early
SMF → LAS
- <1 min early
LAS → DCA
- 14 min late
SMF → LAS
- 7 min late
LAS → DCA
Flight history and details
Aug 18, 2026 — Sep 17, 2026
- Observed arrivals
- 9
- Arrivals over 15 minutes late
- 0
- Observed cancellations
- 0
- Observed occurrences
- 13
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 16, 2026Arrived | Las Vegas | Washington | 13 | |
| Sep 16, 2026Arrived | Sacramento | Las Vegas | -6 | |
| Sep 15, 2026Arrived | Las Vegas | Washington | 0 | |
| Sep 15, 2026Arrived | Sacramento | Las Vegas | 14 | |
| Sep 9, 2026Arrived | Las Vegas | Washington | 7 | |
| Sep 9, 2026Arrived | Sacramento | Las Vegas | -10 | |
| Sep 8, 2026Arrived | Las Vegas | Washington | -6 | |
| Sep 8, 2026Arrived | Sacramento | Las Vegas | -9 | |
| Sep 1, 2026Arrived | Las Vegas | Washington | 7 |