Nonstop flight route between Parnaiba, Piaui, Brazil and Tacoma, Washington, United States:

About this route:

A direct, nonstop flight between Parnaíba–Prefeito Dr. João Silva Filho International Airport (PHB), Parnaiba, Piaui, Brazil and Gray Army Airfield (GRF), Tacoma, Washington, United States would travel a Great Circle distance of 5,936 miles (or 9,554 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 Parnaíba–Prefeito Dr. João Silva Filho International Airport and Gray 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 Parnaíba–Prefeito Dr. João Silva Filho International Airport and Gray Army Airfield. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about Parnaíba–Prefeito Dr. João Silva Filho International Airport (PHB):

• Parnaíba–Prefeito Dr. João Silva Filho International Airport (PHB) currently has only 1 runway.
• Parnaíba–Prefeito Dr.
• The architecture of the terminal is inspired on Santos Dumont Airport in Rio de Janeiro and it was opened on October 19, 1971.
• The furthest airport from Parnaíba–Prefeito Dr. João Silva Filho International Airport (PHB) is Frans Kaisiepo Airport (BIK), which is nearly antipodal to Parnaíba–Prefeito Dr. João Silva Filho International Airport (meaning Parnaíba–Prefeito Dr. João Silva Filho International Airport is almost on the exact opposite side of the Earth from Frans Kaisiepo Airport), and is located 12,118 miles (19,501 kilometers) away in Biak, Indonesia.
• In addition to being known as "Parnaíba–Prefeito Dr. João Silva Filho International Airport", another name for PHB is "Aeroporto Internacional de Parnaíba–Prefeito Dr. João Silva Filho".
• Because of Parnaíba–Prefeito Dr. João Silva Filho International Airport's relatively low elevation of 23 feet, planes can take off or land at Parnaíba–Prefeito Dr. João Silva Filho International 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 closest airport to Parnaíba–Prefeito Dr. João Silva Filho International Airport (PHB) is Barreirinhas Airport (BRB), which is located 75 miles (120 kilometers) W of PHB.
• Parnaíba–Prefeito Dr. João Silva Filho International Airport handled 2,922 passengers last year.

Facts about Gray Army Airfield (GRF):

• The 9th Cavalry Brigade in the 1980s developed air-assault strategies with their AH-1 Cobra helicopters based upon experiences learned in Vietnam.
• Gray Army Airfield (GRF) currently has only 1 runway.
• During the Vietnam War, GAAF not only trained helicopter units, but fixed-wing aircraft units as well.
• The furthest airport from Gray Army Airfield (GRF) is Tôlanaro Airport (FTU), which is located 10,809 miles (17,395 kilometers) away in Tôlanaro, Madagascar.
• In 1926, the War Department observing aviation expansion overseas requested additional aviation funding.
• The 1938 construction included two paved runways, a boiler plant, headquarters building, metal balloon hangar, six-plane hangar, corrugated-iron hangar, storehouse, flight-surgeon office, and film-storage building.
• In addition to being known as "Gray Army Airfield", another name for GRF is "(Joint Base Lewis-McChord)".
• It should not confused with Robert Gray Army Airfield at Fort Hood in Texas.
• The closest airport to Gray Army Airfield (GRF) is McChord Field/McChord AFB (TCM), which is located only 6 miles (10 kilometers) NE of GRF.
• Because of Gray Army Airfield's relatively low elevation of 300 feet, planes can take off or land at Gray Army Airfield 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.
• During the Korean War, GAAF continued in the role as a training and division support field.
• The Washington National Guard 66th Aviation Brigade trains at Grey AAF and provides transportation support for fighting wildfires.