Flight OddsDL3956 SEA → SJC
Delta Air Lines · Seattle, WA to San Jose, CA · 169 flights observed, 2026-01-05 to 2026-06-30 · 696 mi
DL3956 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
83%
Median delay
-8 min
90th percentile
+33 min
Cancellation rate
1%
How often is DL3956 on time?
Across 169 flights on SEA → SJC from 2026-01-05 to 2026-06-30, DL3956 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +33 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 139 | 83% |
| 16-30 min | 10 | 6% |
| 31-60 min | 11 | 7% |
| 61-120 min | 6 | 4% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 23 | 100% | -14 min |
| 2026-02 | 25 | 76% | +0 min |
| 2026-03 | 29 | 86% | +2 min |
| 2026-04 | 30 | 87% | -7 min |
| 2026-05 | 31 | 87% | +3 min |
| 2026-06 | 30 | 63% | +19 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 26 | 73% |
| Tue | 26 | 88% |
| Wed | 25 | 80% |
| Thu | 25 | 84% |
| Fri | 24 | 88% |
| Sat | 17 | 88% |
| Sun | 25 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…