About 1 in 4 DL 489 flights from Seattle arrived 15+ minutes late, diverted or cancelled over the past year (25%); 1.4% were cancelled. The typical flight landed 3 minutes early.
DL 489: SEA → RDU
Scheduled to leave Seattle at 3:55 p.m. local time. Over the past year it arrived on time 75% of the time (360 flights), in line with other DL flights on the route at that hour (76%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 64% |
| Tuesday | 52 | 83% |
| Wednesday | 52 | 83% |
| Thursday | 51 | 76% |
| Friday | 52 | 73% |
| Saturday | 48 | 79% |
| Sunday | 52 | 67% |
Why it was late
All flights SEA → RDU · Connecting off DL 489? Check the risk
Questions
How often is DL 489 from SEA to RDU late?
Delta Air Lines 489 from Seattle, WA to Raleigh/Durham, NC arrived 15 or more minutes late, was diverted or was cancelled on 25% of 360 scheduled flights between September 2025 and August 2026. 1.4% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.