78% of ATL → SLC flights arrived on time in June-August 2026 (735 flights). The most reliable was DL 830, on time 90% of the time on this route. Morning flights did best (87%), evening flights worst (68%). Atlanta (ATL): no delay reported. Salt Lake City (SLC): no delay reported.
Best time of day to fly ATL → SLC
| Morning (before noon) | |
| Afternoon (noon-5 PM) | |
| Evening (after 5 PM) |
Flights ATL → SLC, most reliable first
| Flight | Departs | On time on this route | Cancelled |
|---|---|---|---|
| DL 830 Delta | 8:15 AM | 0% | |
| DL 387 Delta | 10:05 AM | 0% | |
| DL 663 Delta | 11:56 AM | 0% | |
| DL 423 Delta | 1:50 PM | 1.1% | |
| DL 453 Delta | 9:45 PM | 2.2% | |
| DL 526 Delta | 3:20 PM | 1.1% | |
| DL 653 Delta | 5:55 PM | 0% | |
| DL 660 Delta | 7:34 PM | 0% |
ATL conditions · SLC conditions · SLC → ATL · Cancellations
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From BTS on-time data, June-August 2026; flights with 20+ trips on this route. On-time rates cover each flight number's whole day, which can include other legs. Departure times are local.