Distance From Kos Airport to Sofia Airport, KGS - SOF Distance

The distance from Kos Airport (KGS) to Sofia Airport (SOF) is 453 miles or 728 kilometers or 393 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 Kos Island ( Greece ) to Sofia ( Bulgaria )?

A one-way nonstop (direct) flight between Kos Island and Sofia takes around 1 hours 2 minutes.

Estimated flight time from Kos Airport, Kos Island, Greece to Sofia Airport, Sofia, Bulgaria is 1 hours 2 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 • KGS - SOF

Kilometers		728 km
Statute Miles		453 miles
Nautical Miles		393 nm
Avg. Time of Flight		1 hours 2 minutes

Kos Airport to Sofia Airport Flight Route Map - KGS to SOF Flight Path

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

Click to see flight route on Google Map between Kos Island, Greece and Sofia, Bulgaria. .

Nonstop flight route between Kos Island, Greece and Sofia, Bulgaria.

Time Difference Between the Airports • KGS - SOF

Time difference between Kos Island (Greece) and Sofia (Bulgaria) is 0 Hours.

Location	Local Time
Kos Island (Greece)	2025-12-15, 10:48:49 EET
Sofia (Bulgaria)	2025-12-15, 10:48:49 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

Kos Airport (KGS / LGKO) Kos Island, Greece

Destination

Sofia Airport (SOF / LBSF) Sofia, Bulgaria