SEA → RDUSeattle to Raleigh/Durham

live

Direct flights from Seattle (SEA) to Raleigh/Durham (RDU): 14 nonstop departures observed each week across 2 airlines. 100% of the last 9 operated flights arrived within 15 minutes of schedule. The median arrival is 25 minutes early. No cancellations were recorded across the 9 tracked flights. The nonstop covers 3,780 km, an estimated 5 hours 21 minutes in the air. Measured by Pro Flight Search from live flight boards at Seattle and Raleigh/Durham. Updated 14 September 2026 at 10:43 UTC.

SEA Seattle busy · +17
RDU Raleigh/Durham smooth · +0
3,780 km · ~5h 21m est.
dep bank 08:35–21:3014x weekly
Runs reliable · 2 airlines · 14x weekly · nonstop
100% on time

of the last 9 operated SEA → RDU flights arrived within 15 minutes

Median arrival delay is −25 min. 0 of 9 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−25 minacross the last 9 operated legs
Flight time~5h 21mestimated from route distance
Weekly departures14x2 direct airlines on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Alaska AirlinesDelta Air Lines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Alaska AirlinesAS100% on time

Flights AS572 varies daily · AS677 21:30 Mo Th Fr Su

Delta Air LinesDL

Flights DL489 varies daily

History

operated legs · board outcomes
09-13AS572arrived−25
09-13AS677arrived+4
09-13DL489arrived+4
09-12AS572arrived−52
09-12DL489arrived−19
09-11AS572arrived−47
09-11AS677arrived−33
09-11DL489arrived+8
09-10AS677arrived−33

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
SEASeattle +17 min busy ⛅ mostly cloudy · S 7 kt Full SEA delay board →
RDURaleigh/Durham +0 min smooth 🌤 scattered clouds · SW 3 kt Full RDU delay board →

Weather lens

Current conditions put the pressure at RDU: 35% odds of a 15+ minute delay and around +6 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Seattle to Raleigh/Durham route actually runs

Pro Flight Search records official board updates for nonstop SEA to RDU flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Seattle (SEA) to Raleigh/Durham (RDU) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/SEA-RDU
How we measure this →

SEA to RDU questions

Is SEA–RDU running on time right now?

Smooth skies ahead. The departure side at SEA is the weaker end, route health score 89/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from SEA to RDU?

Great-circle distance is 3,780 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 297–354 min gate-to-gate on this route.

How often does SEA–RDU fly?

2 carriers operate this route, around 18 flights a week between them. Compare carrier days and times in the airline list above.

What does the route health score measure?

A blend of departure-side delay at SEA and arrival-side delay at RDU, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.