Distance From Ulsan Airport to Portland International Airport, USN - PDX Distance

The distance from Ulsan Airport (USN) to Portland International Airport (PDX) is 5261 miles or 8467 kilometers or 4569 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 ( South Korea ) to Portland ( United States )?

A one-way nonstop (direct) flight between Ulsan and Portland takes around 12 hours 5 minutes.

Estimated flight time from Ulsan Airport, Ulsan, South Korea to Portland International Airport, Portland, United States is 12 hours 5 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 • USN - PDX

Kilometers		8467 km
Statute Miles		5261 miles
Nautical Miles		4569 nm
Avg. Time of Flight		12 hours 5 minutes

Ulsan Airport to Portland International Airport Flight Route Map - USN to PDX Flight Path

Location of Ulsan Airport & Portland International Airport is given below.
Click the map to view Ulsan to Portland nonstop flight path and travel direction.

Click to see flight route on Google Map between Ulsan, South Korea and Portland, United States. .

Nonstop flight route between Ulsan, South Korea and Portland, United States.

Time Difference Between the Airports • USN - PDX

Time difference between Ulsan (South Korea) and Portland (United States) is 15 Hours.
Portland time is 15 Hours behind Ulsan.

Location	Local Time
Ulsan (South Korea)	2026-06-17, 23:37:11 KST
Portland (United States)	2026-06-17, 08:37:11 MDT

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

Ulsan Airport (USN / RKPU) Ulsan, South Korea

Destination

Portland International Airport (PDX / KPDX) Portland, United States