Nonstop flight route between Smithton, Tasmania, Australia and Big Spring, Texas, United States:
Departure Airport:

Arrival Airport:

Distance from SIO to BGS:
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- About this route
- SIO Airport Information
- BGS Airport Information
- Facts about SIO
- Facts about BGS
- Map of Nearest Airports to SIO
- List of Nearest Airports to SIO
- Map of Furthest Airports from SIO
- List of Furthest Airports from SIO
- Map of Nearest Airports to BGS
- List of Nearest Airports to BGS
- Map of Furthest Airports from BGS
- List of Furthest Airports from BGS
About this route:
A direct, nonstop flight between Smithton Airport (SIO), Smithton, Tasmania, Australia and Webb Air Force Base Big Spring Army Airfield (BGS), Big Spring, Texas, United States would travel a Great Circle distance of 8,780 miles (or 14,129 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 Smithton Airport and Webb Air Force Base Big Spring Army Airfield, 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 Smithton Airport and Webb Air Force Base Big Spring Army Airfield. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | SIO / YSMI |
Airport Name: | Smithton Airport |
Location: | Smithton, Tasmania, Australia |
GPS Coordinates: | 40°50'6"S by 145°4'59"E |
Operator/Owner: | DIER |
Airport Type: | Public |
Elevation: | 31 feet (9 meters) |
# of Runways: | 2 |
View all routes: | Routes from SIO |
More Information: | SIO Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | BGS / |
Airport Name: | Webb Air Force Base Big Spring Army Airfield |
Location: | Big Spring, Texas, United States |
GPS Coordinates: | 32°13'5"N by 101°31'17"W |
View all routes: | Routes from BGS |
More Information: | BGS Maps & Info |
Facts about Smithton Airport (SIO):
- Because of Smithton Airport's relatively low elevation of 31 feet, planes can take off or land at Smithton 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.
- Smithton Airport (SIO) has 2 runways.
- The furthest airport from Smithton Airport (SIO) is Corvo Airport (CVU), which is nearly antipodal to Smithton Airport (meaning Smithton Airport is almost on the exact opposite side of the Earth from Corvo Airport), and is located 12,221 miles (19,667 kilometers) away in Corvo Island, Azores, Portugal.
- The closest airport to Smithton Airport (SIO) is Burnie Airport (BWT), which is located 36 miles (57 kilometers) ESE of SIO.
Facts about Webb Air Force Base Big Spring Army Airfield (BGS):
- Emblem of the AAF Bombardier School Big Spring AAF
- By the mid-1970s, the end of the Vietnam War, the associated financial costs of that conflict and related cuts in USAF force structure and future defense budgets meant a marked decrease in the need for Air Force pilots.
- Big Spring Army Airfield
- In 1956, the Air Defense Command 331st Fighter-Interceptor Squadron was transferred to Webb from Stewart Air Force Base in New York to defend the southern United States border on air intercept missions as part of the Central Air Defense Force.
- The closest airport to Webb Air Force Base Big Spring Army Airfield (BGS) is Midland Airpark (MDD), which is located 36 miles (58 kilometers) WSW of BGS.
- Activated on 26 June 1942, the mission of Big Spring AAF was to train aviation cadets in high altitude precision bombing as bombardiers.
- At that time, nearly 6,000 students had graduated and the field's training aircraft had flown approximately 400,000 hours and more than 60 million miles.
- The furthest airport from Webb Air Force Base Big Spring Army Airfield (BGS) is Sir Gaëtan Duval Airport (RRG), which is located 11,166 miles (17,969 kilometers) away in Rodrigues Island, Mauritius.
- The facility was brought back into service as a primary training installation because of the Korean War and the need for additional pilots.