Flight OddsDL3988 SJC → SEA
Delta Air Lines · San Jose, CA to Seattle, WA · 7 flights observed, 2026-01-06 to 2026-01-17 · 696 mi
DL3988 covers more than one route in the data window — the stats below are for SJC → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
86%
Median delay
-15 min
90th percentile
+25 min
Cancellation rate
0%
How often is DL3988 on time?
Across 7 flights on SJC → SEA from 2026-01-06 to 2026-01-17, DL3988 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived +25 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 | 6 | 86% |
| 16-30 min | 0 | 0% |
| 31-60 min | 0 | 0% |
| 61-120 min | 1 | 14% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 7 | 86% | -3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | 1 | 100% |
| Wed | 1 | 100% |
| Thu | 1 | 0% |
| Fri | 1 | 100% |
| Sat | 2 | 100% |
| Sun | 1 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…