Distance From Newcastle Airport to Seattle–Tacoma International Airport, NCS - SEA Distance

The distance from Newcastle Airport (NCS) to Seattle–Tacoma International Airport (SEA) is 10420 miles or 16768 kilometers or 9048 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Newcastle ( South Africa ) to Seattle ( United States )?

A one-way nonstop (direct) flight between Newcastle and Seattle takes around 23 hours 57 minutes.

Estimated flight time from Newcastle Airport, Newcastle, South Africa to Seattle–Tacoma International Airport, Seattle, United States is 23 hours 57 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • NCS - SEA

Kilometers		16768 km
Statute Miles		10420 miles
Nautical Miles		9048 nm
Avg. Time of Flight		23 hours 57 minutes

Newcastle Airport to Seattle–Tacoma International Airport Flight Route Map - NCS to SEA Flight Path

Location of Newcastle Airport & Seattle–Tacoma International Airport is given below.
Click the map to view Newcastle to Seattle nonstop flight path and travel direction.

Click to see flight route on Google Map between Newcastle, South Africa and Seattle, United States. .

Nonstop flight route between Newcastle, South Africa and Seattle, United States.

Time Difference Between the Airports • NCS - SEA

Time difference between Newcastle (South Africa) and Seattle (United States) is 9 Hours.
Seattle time is 9 Hours behind Newcastle.

Location	Local Time
Newcastle (South Africa)	2026-02-07, 06:34:24 SAST
Seattle (United States)	2026-02-06, 21:34:24 MST

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Newcastle Airport (NCS / FANC) Newcastle, South Africa

Destination

Seattle–Tacoma International Airport (SEA / KSEA) Seattle, United States