Nonstop flight route between Sebring, Florida, United States and St. Helens, Tasmania, Australia:
Departure Airport:

Arrival Airport:

Distance from SEF to HLS:
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- About this route
- SEF Airport Information
- HLS Airport Information
- Facts about SEF
- Facts about HLS
- Map of Nearest Airports to SEF
- List of Nearest Airports to SEF
- Map of Furthest Airports from SEF
- List of Furthest Airports from SEF
- Map of Nearest Airports to HLS
- List of Nearest Airports to HLS
- Map of Furthest Airports from HLS
- List of Furthest Airports from HLS
About this route:
A direct, nonstop flight between Sebring Regional Airport (SEF), Sebring, Florida, United States and St Helens Airport (HLS), St. Helens, Tasmania, Australia would travel a Great Circle distance of 9,494 miles (or 15,279 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 Sebring Regional Airport and St Helens Airport, 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 Sebring Regional Airport and St Helens Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | SEF / KSEF |
Airport Name: | Sebring Regional Airport |
Location: | Sebring, Florida, United States |
GPS Coordinates: | 27°27'23"N by 81°20'33"W |
Area Served: | Sebring, Florida |
Operator/Owner: | Sebring Airport Authority |
Airport Type: | Public |
Elevation: | 62 feet (19 meters) |
# of Runways: | 2 |
View all routes: | Routes from SEF |
More Information: | SEF Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | HLS / YSTH |
Airport Name: | St Helens Airport |
Location: | St. Helens, Tasmania, Australia |
GPS Coordinates: | 41°20'12"S by 148°16'54"E |
Operator/Owner: | Break O'Day Council |
Airport Type: | Public |
Elevation: | 158 feet (48 meters) |
# of Runways: | 1 |
View all routes: | Routes from HLS |
More Information: | HLS Maps & Info |
Facts about Sebring Regional Airport (SEF):
- In 1940, Sebring Officials and citizens contacted their Florida congressional delegation to see about getting an Army base in the area.
- Because of Sebring Regional Airport's relatively low elevation of 62 feet, planes can take off or land at Sebring Regional 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.
- Following the end of World War II, aeronautical engineer Alec Ullman, seeking sites to restore military aircraft for civilian use, saw potential in Hendricks Field's runways to stage a sports car endurance race, similar to the 24 Hours of Le Mans.
- The furthest airport from Sebring Regional Airport (SEF) is Shark Bay Airport (MJK), which is located 11,510 miles (18,523 kilometers) away in Monkey Mia, Western Australia, Australia.
- A portion of the old runway system is now Sebring International Raceway, home to the 12 Hours of Sebring, an American Le Mans series race which has been held annually since 1952.
- Sebring Regional Airport (SEF) has 2 runways.
- The closest airport to Sebring Regional Airport (SEF) is Avon Park Executive Airport (AVO), which is located only 15 miles (24 kilometers) NW of SEF.
Facts about St Helens Airport (HLS):
- St Helens Airport (HLS) currently has only 1 runway.
- The closest airport to St Helens Airport (HLS) is Launceston Airport (LST), which is located 57 miles (92 kilometers) WSW of HLS.
- The furthest airport from St Helens Airport (HLS) is Corvo Airport (CVU), which is nearly antipodal to St Helens Airport (meaning St Helens Airport is almost on the exact opposite side of the Earth from Corvo Airport), and is located 12,317 miles (19,823 kilometers) away in Corvo Island, Azores, Portugal.
- Because of St Helens Airport's relatively low elevation of 158 feet, planes can take off or land at St Helens 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.