Flight OddsDL660 ATL → SLC
Delta Air Lines · Atlanta, GA to Salt Lake City, UT · 361 flights observed, 2025-07-01 to 2026-06-30 · 1,590 mi
On-time arrival
77%
Median delay
-4 min
90th percentile
+47 min
Cancellation rate
0%
How often is DL660 on time?
Across 361 flights on ATL → SLC from 2025-07-01 to 2026-06-30, DL660 arrived within 15 minutes of schedule 77% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +47 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 | 277 | 77% |
| 16-30 min | 27 | 8% |
| 31-60 min | 28 | 8% |
| 61-120 min | 22 | 6% |
| 2+ hrs | 6 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 58% | +26 min |
| 2025-08 | 31 | 77% | +13 min |
| 2025-09 | 30 | 77% | +7 min |
| 2025-10 | 30 | 63% | +21 min |
| 2025-11 | 27 | 63% | +16 min |
| 2025-12 | 31 | 87% | +1 min |
| 2026-01 | 31 | 87% | -1 min |
| 2026-02 | 28 | 79% | +5 min |
| 2026-03 | 30 | 90% | -3 min |
| 2026-04 | 30 | 90% | -10 min |
| 2026-05 | 31 | 74% | -4 min |
| 2026-06 | 30 | 77% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 52 | 75% |
| Tue | 53 | 87% |
| Wed | 52 | 73% |
| Thu | 51 | 73% |
| Fri | 49 | 76% |
| Sat | 51 | 75% |
| Sun | 52 | 81% |
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…