Flight OddsDL4100 SEA → SJC
Delta Air Lines · Seattle, WA to San Jose, CA · 103 flights observed, 2026-02-12 to 2026-06-30 · 696 mi
DL4100 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
87%
Median delay
-8 min
90th percentile
+25 min
Cancellation rate
1%
How often is DL4100 on time?
Across 103 flights on SEA → SJC from 2026-02-12 to 2026-06-30, DL4100 arrived within 15 minutes of schedule 87% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +25 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 | 89 | 87% |
| 16-30 min | 6 | 6% |
| 31-60 min | 3 | 3% |
| 61-120 min | 2 | 2% |
| 2+ hrs | 2 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-02 | 13 | 85% | +8 min |
| 2026-03 | 29 | 76% | +7 min |
| 2026-04 | 30 | 93% | -11 min |
| 2026-05 | 6 | 83% | -16 min |
| 2026-06 | 24 | 96% | -6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 16 | 88% |
| Tue | 16 | 94% |
| Wed | 15 | 87% |
| Thu | 15 | 93% |
| Fri | 14 | 86% |
| Sat | 11 | 100% |
| Sun | 15 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…