Distance From Knox County Sheriffs Office Heliport to Sofia Airport

The distance from Knox County Sheriffs Office Heliport () to Sofia Airport (SOF) is 5327 miles or 8573 kilometers or 4626 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 Knoxville ( United States ) to Sofia ( Bulgaria )?

A one-way nonstop (direct) flight between Knoxville and Sofia takes around 12 hours 14 minutes.

Estimated flight time from Knox County Sheriffs Office Heliport, Knoxville, United States to Sofia Airport, Sofia, Bulgaria is 12 hours 14 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		8573 km
Statute Miles		5327 miles
Nautical Miles		4626 nm
Avg. Time of Flight		12 hours 14 minutes

Knox County Sheriffs Office Heliport to Sofia Airport Flight Route Map - to SOF Flight Path

Location of Knox County Sheriffs Office Heliport & Sofia Airport is given below.
Click the map to view Knoxville to Sofia nonstop flight path and travel direction.

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

Nonstop flight route between Knoxville, United States and Sofia, Bulgaria.

Time Difference Between the Airports • - SOF

Time difference between Knoxville (United States) and Sofia (Bulgaria) is 6 Hours.
Sofia time is 6 Hours ahead of Knoxville.

Location	Local Time
Knoxville (United States)	2026-03-21, 23:40:11 EDT
Sofia (Bulgaria)	2026-03-22, 05:40:11 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

Knox County Sheriffs Office Heliport ( / 20TN) Knoxville, United States

Destination

Sofia Airport (SOF / LBSF) Sofia, Bulgaria