Flight OddsDL1521 JAC → SLC
Delta Air Lines · Jackson, WY to Salt Lake City, UT · 25 flights observed, 2025-09-11 to 2025-10-05 · 205 mi
DL1521 covers more than one route in the data window — the stats below are for JAC → SLC, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
92%
Median delay
-10 min
90th percentile
+13 min
Cancellation rate
0%
How often is DL1521 on time?
Across 25 flights on JAC → SLC from 2025-09-11 to 2025-10-05, DL1521 arrived within 15 minutes of schedule 92% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +13 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 | 23 | 92% |
| 16-30 min | 1 | 4% |
| 31-60 min | 1 | 4% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-09 | 20 | 95% | -8 min |
| 2025-10 | 5 | 80% | +4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 100% |
| Tue | 3 | 100% |
| Wed | 3 | 33% |
| Thu | 4 | 100% |
| Fri | 4 | 100% |
| Sat | 4 | 100% |
| Sun | 4 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…