Distance From Gunam-gun Army Base Heliport to Seattle–Tacoma International Airport

The distance from Gunam-gun Army Base Heliport () to Seattle–Tacoma International Airport (SEA) is 5192 miles or 8356 kilometers or 4509 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 Ulsan (Gunam-gun) ( South Korea ) to Seattle ( United States )?

A one-way nonstop (direct) flight between Ulsan (Gunam-gun) and Seattle takes around 11 hours 56 minutes.

Estimated flight time from Gunam-gun Army Base Heliport, Ulsan (Gunam-gun), South Korea to Seattle–Tacoma International Airport, Seattle, United States is 11 hours 56 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 • - SEA

Kilometers		8356 km
Statute Miles		5192 miles
Nautical Miles		4509 nm
Avg. Time of Flight		11 hours 56 minutes

Gunam-gun Army Base Heliport to Seattle–Tacoma International Airport Flight Route Map - to SEA Flight Path

Location of Gunam-gun Army Base Heliport & Seattle–Tacoma International Airport is given below.
Click the map to view Ulsan (Gunam-gun) to Seattle nonstop flight path and travel direction.

Click to see flight route on Google Map between Ulsan (Gunam-gun), South Korea and Seattle, United States. .

Nonstop flight route between Ulsan (Gunam-gun), South Korea and Seattle, United States.

Time Difference Between the Airports • - SEA

Time difference between Ulsan (Gunam-gun) (South Korea) and Seattle (United States) is 16 Hours.
Seattle time is 16 Hours behind Ulsan (Gunam-gun).

Location	Local Time
Ulsan (Gunam-gun) (South Korea)	2025-12-18, 12:22:51 KST
Seattle (United States)	2025-12-17, 20:22:51 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

Gunam-gun Army Base Heliport ( / ) Ulsan (Gunam-gun), South Korea

Destination

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