Flight OddsDL3979 SJC → LAX
Delta Air Lines · San Jose, CA to Los Angeles, CA · 270 flights observed, 2025-07-01 to 2026-05-06 · 308 mi
DL3979 covers more than one route in the data window — the stats below are for SJC → LAX, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
98%
Median delay
-17 min
90th percentile
-2 min
Cancellation rate
0%
How often is DL3979 on time?
Across 270 flights on SJC → LAX from 2025-07-01 to 2026-05-06, DL3979 arrived within 15 minutes of schedule 98% of the time. The median arrival delay was -17 min, and the worst 10% of flights arrived -2 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 | 262 | 98% |
| 16-30 min | 2 | 1% |
| 31-60 min | 0 | 0% |
| 61-120 min | 2 | 1% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 100% | -21 min |
| 2025-08 | 31 | 100% | -20 min |
| 2025-09 | 30 | 100% | -23 min |
| 2025-10 | 30 | 100% | -13 min |
| 2025-11 | 30 | 90% | -9 min |
| 2025-12 | 27 | 96% | +24 min |
| 2026-01 | 30 | 100% | -17 min |
| 2026-02 | 28 | 100% | -9 min |
| 2026-03 | 7 | 86% | +3 min |
| 2026-04 | 18 | 94% | -11 min |
| 2026-05 | 6 | 100% | -12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 38 | 97% |
| Tue | 40 | 98% |
| Wed | 38 | 100% |
| Thu | 37 | 100% |
| Fri | 39 | 95% |
| Sat | 39 | 95% |
| Sun | 37 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…