Distance From Kotlas Airport to Sofia Airport, KSZ - SOF Distance

The distance from Kotlas Airport (KSZ) to Sofia Airport (SOF) is 1602 miles or 2577 kilometers or 1391 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 Kotlas ( Russia ) to Sofia ( Bulgaria )?

A one-way nonstop (direct) flight between Kotlas and Sofia takes around 3 hours 40 minutes.

Estimated flight time from Kotlas Airport, Kotlas, Russia to Sofia Airport, Sofia, Bulgaria is 3 hours 40 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 • KSZ - SOF

Kilometers		2577 km
Statute Miles		1602 miles
Nautical Miles		1391 nm
Avg. Time of Flight		3 hours 40 minutes

Kotlas Airport to Sofia Airport Flight Route Map - KSZ to SOF Flight Path

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

Click to see flight route on Google Map between Kotlas, Russia and Sofia, Bulgaria. .

Nonstop flight route between Kotlas, Russia and Sofia, Bulgaria.

Time Difference Between the Airports • KSZ - SOF

Time difference between Kotlas (Russia) and Sofia (Bulgaria) is 1 Hours.
Sofia time is 1 Hours behind Kotlas.

Location	Local Time
Kotlas (Russia)	2026-10-28, 15:26:29 MSK
Sofia (Bulgaria)	2026-10-28, 14:26:29 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

Kotlas Airport (KSZ / ULKK) Kotlas, Russia

Destination

Sofia Airport (SOF / LBSF) Sofia, Bulgaria