Distance From JASDF Unishima Sub Base Heliport to Sofia Airport

The distance from JASDF Unishima Sub Base Heliport () to Sofia Airport (SOF) is 5343 miles or 8599 kilometers or 4640 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 Tsushima ( Japan ) to Sofia ( Bulgaria )?

A one-way nonstop (direct) flight between Tsushima and Sofia takes around 12 hours 17 minutes.

Estimated flight time from JASDF Unishima Sub Base Heliport, Tsushima, Japan to Sofia Airport, Sofia, Bulgaria is 12 hours 17 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		8599 km
Statute Miles		5343 miles
Nautical Miles		4640 nm
Avg. Time of Flight		12 hours 17 minutes

JASDF Unishima Sub Base Heliport to Sofia Airport Flight Route Map - to SOF Flight Path

Location of JASDF Unishima Sub Base Heliport & Sofia Airport is given below.
Click the map to view Tsushima to Sofia nonstop flight path and travel direction.

Click to see flight route on Google Map between Tsushima, Japan and Sofia, Bulgaria. .

Nonstop flight route between Tsushima, Japan and Sofia, Bulgaria.

Time Difference Between the Airports • - SOF

Time difference between Tsushima (Japan) and Sofia (Bulgaria) is 7 Hours.
Sofia time is 7 Hours behind Tsushima.

Location	Local Time
Tsushima (Japan)	2026-03-22, 19:41:25 JST
Sofia (Bulgaria)	2026-03-22, 12:41:25 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

JASDF Unishima Sub Base Heliport ( / ) Tsushima, Japan

Destination

Sofia Airport (SOF / LBSF) Sofia, Bulgaria