Distance From Spirit Lake Municipal Airport to Sofia Airport, RTL - SOF Distance

The distance from Spirit Lake Municipal Airport (RTL) to Sofia Airport (SOF) is 5379 miles or 8656 kilometers or 4671 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.

---

How long does it take to travel from Spirit Lake ( United States ) to Sofia ( Bulgaria )?

A one-way nonstop (direct) flight between Spirit Lake and Sofia takes around 12 hours 21 minutes.

Estimated flight time from Spirit Lake Municipal Airport, Spirit Lake, United States to Sofia Airport, Sofia, Bulgaria is 12 hours 21 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 • RTL - SOF

Kilometers		8656 km
Statute Miles		5379 miles
Nautical Miles		4671 nm
Avg. Time of Flight		12 hours 21 minutes

Spirit Lake Municipal Airport to Sofia Airport Flight Route Map - RTL to SOF Flight Path

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

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

Nonstop flight route between Spirit Lake, United States and Sofia, Bulgaria.

Time Difference Between the Airports • RTL - SOF

Time difference between Spirit Lake (United States) and Sofia (Bulgaria) is 8 Hours.
Sofia time is 8 Hours ahead of Spirit Lake.

Location	Local Time
Spirit Lake (United States)	2025-12-05, 04:01:37 CST
Sofia (Bulgaria)	2025-12-05, 12:01:37 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

Spirit Lake Municipal Airport (RTL / ) Spirit Lake, United States

Destination

Sofia Airport (SOF / LBSF) Sofia, Bulgaria