Distance From N 104 Helipad to Sofia Airport

The distance from N 104 Helipad () to Sofia Airport (SOF) is 5270 miles or 8481 kilometers or 4576 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 Ulleung-do Island ( South Korea ) to Sofia ( Bulgaria )?

A one-way nonstop (direct) flight between Ulleung-do Island and Sofia takes around 12 hours 6 minutes.

Estimated flight time from N 104 Helipad, Ulleung-do Island, South Korea to Sofia Airport, Sofia, Bulgaria is 12 hours 6 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 • - SOF

Kilometers		8481 km
Statute Miles		5270 miles
Nautical Miles		4576 nm
Avg. Time of Flight		12 hours 6 minutes

N 104 Helipad to Sofia Airport Flight Route Map - to SOF Flight Path

Location of N 104 Helipad & Sofia Airport is given below.
Click the map to view Ulleung-do Island to Sofia nonstop flight path and travel direction.

Click to see flight route on Google Map between Ulleung-do Island, South Korea and Sofia, Bulgaria. .

Nonstop flight route between Ulleung-do Island, South Korea and Sofia, Bulgaria.

Time Difference Between the Airports • - SOF

Time difference between Ulleung-do Island (South Korea) and Sofia (Bulgaria) is 7 Hours.
Sofia time is 7 Hours behind Ulleung-do Island.

Location	Local Time
Ulleung-do Island (South Korea)	2026-01-30, 01:38:11 KST
Sofia (Bulgaria)	2026-01-29, 18:38:11 EET

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

N 104 Helipad ( / RKDU) Ulleung-do Island, South Korea

Destination

Sofia Airport (SOF / LBSF) Sofia, Bulgaria