Distance From US Coast Guard Station Grays Harbor Heliport to Muan International Airport

The distance from US Coast Guard Station Grays Harbor Heliport () to Muan International Airport (MWX) is 5293 miles or 8517 kilometers or 4596 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 Westport ( United States ) to Piseo-ri (Muan) ( South Korea )?

A one-way nonstop (direct) flight between Westport and Piseo-ri (Muan) takes around 12 hours 10 minutes.

Estimated flight time from US Coast Guard Station Grays Harbor Heliport, Westport, United States to Muan International Airport, Piseo-ri (Muan), South Korea is 12 hours 10 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 • - MWX

Kilometers		8517 km
Statute Miles		5293 miles
Nautical Miles		4596 nm
Avg. Time of Flight		12 hours 10 minutes

US Coast Guard Station Grays Harbor Heliport to Muan International Airport Flight Route Map - to MWX Flight Path

Location of US Coast Guard Station Grays Harbor Heliport & Muan International Airport is given below.
Click the map to view Westport to Piseo-ri (Muan) nonstop flight path and travel direction.

Click to see flight route on Google Map between Westport, United States and Piseo-ri (Muan), South Korea. .

Nonstop flight route between Westport, United States and Piseo-ri (Muan), South Korea.

Time Difference Between the Airports • - MWX

Time difference between Westport (United States) and Piseo-ri (Muan) (South Korea) is 16 Hours.
Piseo-ri (Muan) time is 16 Hours ahead of Westport.

Location	Local Time
Westport (United States)	2026-11-08, 20:14:56 MST
Piseo-ri (Muan) (South Korea)	2026-11-09, 12:14:56 KST

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

US Coast Guard Station Grays Harbor Heliport ( / ) Westport, United States

Destination

Muan International Airport (MWX / RKJB) Piseo-ri (Muan), South Korea