The nonstop is quickest: Delta SEA → RDU (5h 02m), on time 77% of the time. Delta via Atlanta (8h 12m) is more reliable, 92%, but takes 3h 10m 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.
| DL 489 | SEA 15:40 | RDU 23:42 | 77% |
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 489 | SEA 15:40 | RDU 23:42 | 5h 02m | 360 | 77% | 1.4% | 51 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 | SEA | RDU | 5h 02m | 78% | 1.4% | 364 | Flying now |
Alternatives with one stop
All connections →| DeltaDetails → | SEA 23:59 → ATL 07:46DL 652 | 57m Atlanta | ATL 08:43 → RDU 10:10 +1DL 1699 | 7h 11m | 86% | 79% |
| DeltaDetails → | SEA 06:00 → ATL 13:49DL 569 | 56m Atlanta | ATL 14:45 → RDU 16:14DL 1550 | 7h 14m | 94% | 78% |
| DeltaDetails → | SEA 13:30 → SLC 16:40DL 1120 | 57m Salt Lake City | SLC 17:37 → RDU 23:43DL 1409 | 7h 13m | 81% | 68% |
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