Distance From Salmon River Airfield to Sofia Airport

The distance from Salmon River Airfield () to Sofia Airport (SOF) is 4615 miles or 7427 kilometers or 4008 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 Marlborough ( United States ) to Sofia ( Bulgaria )?

A one-way nonstop (direct) flight between Marlborough and Sofia takes around 10 hours 36 minutes.

Estimated flight time from Salmon River Airfield, Marlborough, United States to Sofia Airport, Sofia, Bulgaria is 10 hours 36 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		7427 km
Statute Miles		4615 miles
Nautical Miles		4008 nm
Avg. Time of Flight		10 hours 36 minutes

Salmon River Airfield to Sofia Airport Flight Route Map - to SOF Flight Path

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

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

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

Time Difference Between the Airports • - SOF

Time difference between Marlborough (United States) and Sofia (Bulgaria) is 7 Hours.
Sofia time is 7 Hours ahead of Marlborough.

Location	Local Time
Marlborough (United States)	2025-12-16, 04:55:53 EST
Sofia (Bulgaria)	2025-12-16, 11:55:53 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

Salmon River Airfield ( / ) Marlborough, United States

Destination

Sofia Airport (SOF / LBSF) Sofia, Bulgaria