Southwest Airlines
Is WN3957 delayed?
Service date: · Scheduled departure date (UTC)
Arrived
23 min early
Official source · Updated
Departure
Ontario
ONT
Scheduled
Sep 15
Arrival
Oakland
OAK
Actual
Scheduled 04:19
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
ONTOAK
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 23 min early
ONT → OAK
- 18 min early
DEN → GRR
- 4 min early
ONT → OAK
- 10 min early
ONT → OAK
- 10 min late
ONT → OAK
Flight history and details
Aug 17, 2026 — Sep 16, 2026
- Observed arrivals
- 8
- Arrivals over 15 minutes late
- 1
- Observed cancellations
- 0
- Observed occurrences
- 12
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 | Oakland | -23 | |
| Sep 12, 2026Arrived | Denver | Grand Rapids | -18 | |
| Sep 12, 2026Arrived | Ontario | Oakland | -4 | |
| Sep 11, 2026Arrived | Ontario | Oakland | -10 | |
| Sep 8, 2026Arrived | Ontario | Oakland | 10 | |
| Sep 6, 2026Arrived | Chicago | Las Vegas | 13 | |
| Sep 5, 2026Arrived | Denver | Grand Rapids | 2 | |
| Sep 5, 2026Arrived | Ontario | Oakland | 47 |