Flight OddsWN4423 SEA → SJC
Southwest Airlines · Seattle, WA to San Jose, CA · 20 flights observed, 2026-03-05 to 2026-04-06 · 696 mi
WN4423 covers more than one route in the data window — the stats below are for SEA → SJC, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
85%
Median delay
-10 min
90th percentile
+34 min
Cancellation rate
0%
How often is WN4423 on time?
Across 20 flights on SEA → SJC from 2026-03-05 to 2026-04-06, WN4423 arrived within 15 minutes of schedule 85% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +34 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 17 | 85% |
| 16-30 min | 0 | 0% |
| 31-60 min | 2 | 10% |
| 61-120 min | 1 | 5% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 16 | 81% | +0 min |
| 2026-04 | 4 | 100% | -17 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 100% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 5 | 100% |
| Fri | 5 | 80% |
| Sat | No data | — |
| Sun | 5 | 60% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…