The nonstop is quickest: Delta DCA → SEA (5h 55m), on time 2 times in 3. Delta via Salt Lake City (9h 09m) is more reliable, 87%, but takes 3h 14m longer.
Time of day × airport
Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).
Pick an hour to see this route’s flights leaving then.
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.
All 1 Delta flights in the current schedule
Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
| DL 786 | DCA 16:36 | SEA 19:30 | 5h 54m | 126 | 66% | 4.0% | 100 min |
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 | DCA | SEA | 5h 55m | 69% | 2.7% | 364 | Flying now |
Alternatives with one stop
All connections →| DeltaDetails → | DCA 06:00 → MSP 07:39DL 1193 | 1h 26m Minneapolis | MSP 09:05 → SEA 10:59DL 868 | 7h 59m | 93% | 79% |
| DeltaDetails → | DCA 07:45 → MSP 09:27DL 1493 | 1h 43m Minneapolis | MSP 11:10 → SEA 12:58DL 889 | 8h 13m | 93% | 79% |
| DeltaDetails → | DCA 06:59 → ATL 08:51DL 330 | 1h 01m Atlanta | ATL 09:52 → SEA 12:20DL 774 | 8h 23m | 94% | 77% |
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