Nonstop flight route between Holland, Michigan, United States and Sofia, Bulgaria:
Departure Airport:

Arrival Airport:

Distance from HLM to SOF:
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- About this route
- HLM Airport Information
- SOF Airport Information
- Facts about HLM
- Facts about SOF
- Map of Nearest Airports to HLM
- List of Nearest Airports to HLM
- Map of Furthest Airports from HLM
- List of Furthest Airports from HLM
- Map of Nearest Airports to SOF
- List of Nearest Airports to SOF
- Map of Furthest Airports from SOF
- List of Furthest Airports from SOF
About this route:
A direct, nonstop flight between Park Township Airport (HLM), Holland, Michigan, United States and Sofia Airport Vrazhdebna (SOF), Sofia, Bulgaria would travel a Great Circle distance of 5,095 miles (or 8,199 kilometers).
A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Park Township Airport and Sofia Airport Vrazhdebna, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Park Township Airport and Sofia Airport Vrazhdebna. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | HLM / KHLM |
Airport Name: | Park Township Airport |
Location: | Holland, Michigan, United States |
GPS Coordinates: | 42°47'44"N by 86°9'42"W |
Operator/Owner: | Ottawa Aviation |
Airport Type: | Public |
Elevation: | 603 feet (184 meters) |
# of Runways: | 2 |
View all routes: | Routes from HLM |
More Information: | HLM Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | SOF / LBSF |
Airport Names: |
|
Location: | Sofia, Bulgaria |
GPS Coordinates: | 42°41'42"N by 23°24'29"E |
Area Served: | Sofia, Bulgaria |
Operator/Owner: | Sofia Airport EAD |
Airport Type: | Public |
Elevation: | 1742 feet (531 meters) |
# of Runways: | 1 |
View all routes: | Routes from SOF |
More Information: | SOF Maps & Info |
Facts about Park Township Airport (HLM):
- The closest airport to Park Township Airport (HLM) is Muskegon County Airport (MKG), which is located 26 miles (42 kilometers) N of HLM.
- The furthest airport from Park Township Airport (HLM) is Margaret River Airport (MGV), which is located 11,137 miles (17,924 kilometers) away in Margaret River, Western Australia, Australia.
- Because of Park Township Airport's relatively low elevation of 603 feet, planes can take off or land at Park Township Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- The EAA Chapter 1242 was disbanded due to failure to comply with National EEA by-laws.
- Park Township Airport (HLM) has 2 runways.
Facts about Sofia Airport Vrazhdebna (SOF):
- The construction of the new Sofia tower is related to the reconstruction and development of Sofia Airport and is the natural extension of the development of the airport complex.
- Sofia Airport Vrazhdebna handled 350,432 passengers last year.
- According to the plan a new Sofia airport terminal was built to the east of the old terminal and a second runway was constructed alongside the existing one.
- In addition to being known as "Sofia Airport Vrazhdebna", other names for SOF include "Vrazhdebna Airport" and "Летище София".
- The furthest airport from Sofia Airport Vrazhdebna (SOF) is Chatham Islands (CHT), which is located 11,437 miles (18,405 kilometers) away in Waitangi, Chatham Islands, New Zealand.
- Sofia Airport Vrazhdebna (SOF) currently has only 1 runway.
- The closest airport to Sofia Airport Vrazhdebna (SOF) is Plovdiv Airport (PDV), which is located 86 miles (138 kilometers) ESE of SOF.
- Contract for detailed design and construction of a new control tower of the airport and forming an ATM Glavbolgarstroy.
- Options for different airport developments began to be examined in the mid-1960s.