Distance From Entrance Island Seaplane Base to Sofia Airport, HBH - SOF Distance

The distance from Entrance Island Seaplane Base (HBH) to Sofia Airport (SOF) is 5392 miles or 8677 kilometers or 4682 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 Entrance Island ( United States ) to Sofia ( Bulgaria )?

A one-way nonstop (direct) flight between Entrance Island and Sofia takes around 12 hours 23 minutes.

Estimated flight time from Entrance Island Seaplane Base, Entrance Island, United States to Sofia Airport, Sofia, Bulgaria is 12 hours 23 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 • HBH - SOF

Kilometers		8677 km
Statute Miles		5392 miles
Nautical Miles		4682 nm
Avg. Time of Flight		12 hours 23 minutes

Entrance Island Seaplane Base to Sofia Airport Flight Route Map - HBH to SOF Flight Path

Location of Entrance Island Seaplane Base & Sofia Airport is given below.
Click the map to view Entrance Island to Sofia nonstop flight path and travel direction.

Click to see flight route on Google Map between Entrance Island, United States and Sofia, Bulgaria. .

Nonstop flight route between Entrance Island, United States and Sofia, Bulgaria.

Time Difference Between the Airports • HBH - SOF

Time difference between Entrance Island (United States) and Sofia (Bulgaria) is 11 Hours.
Sofia time is 11 Hours ahead of Entrance Island.

Location	Local Time
Entrance Island (United States)	2026-05-07, 08:08:42 AKDT
Sofia (Bulgaria)	2026-05-07, 19:08:42 EEST

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

Entrance Island Seaplane Base (HBH / ) Entrance Island, United States

Destination

Sofia Airport (SOF / LBSF) Sofia, Bulgaria