CHS → SEACharleston to Seattle

live

Direct flights from Charleston (CHS) to Seattle (SEA): 7 nonstop departures observed each week across 1 airline. 50% of the last 6 operated flights arrived within 15 minutes of schedule. The median arrival is 17 minutes late. No cancellations were recorded across the 6 tracked flights. The nonstop covers 3,879 km, an estimated 5 hours 28 minutes in the air. Measured by Pro Flight Search from live flight boards at Charleston and Seattle. Updated 16 October 2026 at 06:45 UTC.

CHS Charleston heavy · +31
SEA Seattle smooth · +0
3,879 km · ~5h 28m est.
departs 18:597x weekly
Runs rough · 1 airline · 7x weekly · nonstop
50% on time

of the last 6 operated CHS → SEA flights arrived within 15 minutes

Median arrival delay is +17 min. 0 of 6 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+17 minacross the last 6 operated legs
Flight time~5h 28mestimated from route distance
Weekly departures7x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Alaska Airlines

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 AirlinesAS50% on time

Flights AS787 18:59 daily

History

operated legs · board outcomes
10-15AS787departed+17
10-14AS787departed−2
10-13AS787departed+18
10-12AS787departed+8
10-11AS787departed+14
10-10AS787departed+44

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
CHSCharleston +31 min heavy 🌤 few clouds · N 0 kt Full CHS delay board →
SEASeattle +0 min smooth 🌤 scattered clouds · N 6 kt Full SEA delay board →

Weather lens

Current conditions put the pressure at CHS and SEA: 38% 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 Charleston to Seattle route actually runs

Pro Flight Search records official board updates for nonstop CHS to SEA 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 — Charleston (CHS) to Seattle (SEA) route reliability, measured from operated flights on official airport boards.

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

CHS to SEA questions

Is CHS–SEA running on time right now?

Mostly on schedule. The departure side at CHS is the weaker end, route health score 79/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from CHS to SEA?

Great-circle distance is 3,879 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 304–362 min gate-to-gate on this route.

How often does CHS–SEA fly?

Alaska Airlines runs the route with about 7 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.

What does the route health score measure?

A blend of departure-side delay at CHS and arrival-side delay at SEA, 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.