Southwest Airlines
Is WN4315 delayed?
Service date: · Scheduled departure date (UTC)
Arrived
24 min late
Official source · Updated
Departure
Ontario
ONT
Actual
Scheduled 00:58
Sep 15
Arrival
Las Vegas
LAS
Actual
Scheduled 18:43
Sep 14
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
ONTLAS
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 24 min late
ONT → LAS
- 12 min early
LGA → BNA
- 20 min late
ONT → LAS
- 9 min early
ONT → LAS
- 47 min late
LAX → MCI
Flight history and details
Aug 17, 2026 — Sep 16, 2026
- Observed arrivals
- 8
- Arrivals over 15 minutes late
- 4
- 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 | Ontario | Las Vegas | 24 | |
| Sep 12, 2026Arrived | New York | Nashville | -12 | |
| Sep 12, 2026Arrived | Ontario | Las Vegas | 20 | |
| Sep 11, 2026Arrived | Ontario | Las Vegas | -9 | |
| Sep 6, 2026Arrived | Los Angeles | Kansas City | 47 | |
| Sep 5, 2026Arrived | New York | Nashville | -18 | |
| Sep 5, 2026Arrived | Ontario | Las Vegas | 15 | |
| Aug 29, 2026Arrived | New York | Nashville | -21 |