Nonstop flight route between Trenton, New Jersey, United States and St. Helens, Tasmania, Australia:
Departure Airport:

Arrival Airport:

Distance from TTN to HLS:
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- About this route
- TTN Airport Information
- HLS Airport Information
- Facts about TTN
- Facts about HLS
- Map of Nearest Airports to TTN
- List of Nearest Airports to TTN
- Map of Furthest Airports from TTN
- List of Furthest Airports from TTN
- 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 Trenton-Mercer Airport (TTN), Trenton, New Jersey, United States and St Helens Airport (HLS), St. Helens, Tasmania, Australia would travel a Great Circle distance of 10,205 miles (or 16,424 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 Trenton-Mercer 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 Trenton-Mercer 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: | TTN / KTTN |
Airport Name: | Trenton-Mercer Airport |
Location: | Trenton, New Jersey, United States |
GPS Coordinates: | 40°16'36"N by 74°48'47"W |
Area Served: | Trenton, New Jersey |
Operator/Owner: | County of Mercer |
Airport Type: | Public |
Elevation: | 212 feet (65 meters) |
# of Runways: | 2 |
View all routes: | Routes from TTN |
More Information: | TTN 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 Trenton-Mercer Airport (TTN):
- The closest airport to Trenton-Mercer Airport (TTN) is Princeton Airport (PCT), which is located only 12 miles (19 kilometers) NE of TTN.
- The Trenton-Mercer Airport is within walking distance of the West Trenton SEPTA Train Station.
- For many years the county has planned to expand the airport and attract more commercial airlines.
- Because of Trenton-Mercer Airport's relatively low elevation of 212 feet, planes can take off or land at Trenton-Mercer 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.
- Airport Air Traffic Control operations based in the control tower were 6 AM to Midnight during the 1980s and early 1990s.
- The first airplane landed at what is now Trenton-Mercer Airport in 1907, in what was then Alfred Reeder's farm field, just off of Bear Tavern Road in Ewing.
- Trenton-Mercer Airport (TTN) has 2 runways.
- The furthest airport from Trenton-Mercer Airport (TTN) is Margaret River Airport (MGV), which is located 11,737 miles (18,889 kilometers) away in Margaret River, Western Australia, Australia.
- Trenton-Mercer Airport has one terminal with two gates.
- Trenton-Mercer Airport has rental cars available in the terminal with no shuttle needed.
Facts about St Helens Airport (HLS):
- 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.
- St Helens Airport (HLS) currently has only 1 runway.