Distance From Seoul Air Base (K-16) to Ronald Reagan Washington National Airport, SSN - DCA Distance

The distance from Seoul Air Base (K-16) (SSN) to Ronald Reagan Washington National Airport (DCA) is 6946 miles or 11179 kilometers or 6032 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.

---

How long does it take to travel from Seongnam ( South Korea ) to Washington ( United States )?

A one-way nonstop (direct) flight between Seongnam and Washington takes around 15 hours 58 minutes.

Estimated flight time from Seoul Air Base (K-16), Seongnam, South Korea to Ronald Reagan Washington National Airport, Washington, United States is 15 hours 58 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 • SSN - DCA

Kilometers		11179 km
Statute Miles		6946 miles
Nautical Miles		6032 nm
Avg. Time of Flight		15 hours 58 minutes

Seoul Air Base (K-16) to Ronald Reagan Washington National Airport Flight Route Map - SSN to DCA Flight Path

Location of Seoul Air Base (K-16) & Ronald Reagan Washington National Airport is given below.
Click the map to view Seongnam to Washington nonstop flight path and travel direction.

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

Nonstop flight route between Seongnam, South Korea and Washington, United States.

Time Difference Between the Airports • SSN - DCA

Time difference between Seongnam (South Korea) and Washington (United States) is 13 Hours.
Washington time is 13 Hours behind Seongnam.

Location	Local Time
Seongnam (South Korea)	2026-03-19, 14:37:40 KST
Washington (United States)	2026-03-19, 01:37:40 EDT

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

Seoul Air Base (K-16) (SSN / RKSM) Seongnam, South Korea

Destination

Ronald Reagan Washington National Airport (DCA / KDCA) Washington, United States