Flight OddsDelta Air Lines · Salt Lake City, UT to Pasco/Kennewick/Richland, WA · 70 flights observed, 2025-07-01 to 2025-09-10 · 521 mi
DL3509 covers more than one route in the data window — the stats below are for SLC → PSC, the one it has flown most recently. The others are linked under “Other routes”.
How often is DL3509 on time?
Across 70 flights on SLC → PSC from 2025-07-01 to 2025-09-10, DL3509 arrived within 15 minutes of schedule 97% of the time. The median arrival delay was -8 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 | 68 | 97% |
| 16-30 min | 1 | 1% |
| 31-60 min | 0 | 0% |
| 61-120 min | 1 | 1% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 93% | -3 min |
| 2025-08 | 31 | 100% | -7 min |
| 2025-09 | 10 | 100% | -8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 10 | 90% |
| Tue | 11 | 100% |
| Wed | 11 | 100% |
| Thu | 10 | 100% |
| Fri | 9 | 89% |
| Sat | 9 | 100% |
| Sun | 10 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…