Showing Delta only (incl. its regional partners)All airlines ×
38 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines
No nonstop, and no clear pattern: the best connection reaches Seattle on time 87% of the time.
Flights, best and worst
Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
No Delta flight on this route ran 150+ times in the year.
Nonstops by airline and airport
Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
| Delta | SUN | SEA | 2h 04m | 89%few flights | 2.6% | 38 | Not flying now |
Alternatives with one stop
All connections →| DeltaDetails → | SUN 07:20 → SLC 08:25DL 4037 · flown by SkyWest | 3h 10m Salt Lake City | SLC 11:35 → SEA 12:52DL 2995 | 6h 32m | 99% | 87% |
| DeltaDetails → | SUN 13:10 → SLC 14:24DL 4019 · flown by SkyWest | 2h 56m Salt Lake City | SLC 17:20 → SEA 18:36DL 871 | 6h 26m | 98% | 79% |
About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON