Nonstop flight route between Porto, Portugal and Rockland, Maine, United States:

About this route:

A direct, nonstop flight between Francisco Sá Carneiro Airport (OPO), Porto, Portugal and Knox County Regional Airport (RKD), Rockland, Maine, United States would travel a Great Circle distance of 3,007 miles (or 4,839 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 Francisco Sá Carneiro Airport and Knox County Regional 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 Francisco Sá Carneiro Airport and Knox County Regional Airport. 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 Francisco Sá Carneiro Airport (OPO):

• The furthest airport from Francisco Sá Carneiro Airport (OPO) is Westport Airport (WSZ), which is nearly antipodal to Francisco Sá Carneiro Airport (meaning Francisco Sá Carneiro Airport is almost on the exact opposite side of the Earth from Westport Airport), and is located 12,400 miles (19,955 kilometers) away in Westport, New Zealand.
• Francisco Sá Carneiro Airport or simply Porto Airport is an international airport near Porto, Portugal.
• In addition to being known as "Francisco Sá Carneiro Airport", another name for OPO is "Aeroporto Francisco Sá Carneiro".
• The airport is served by Line E of the Porto Metro.
• The closest airport to Francisco Sá Carneiro Airport (OPO) is Braga Airport (BGZ), which is located 27 miles (44 kilometers) NNE of OPO.
• Because of Francisco Sá Carneiro Airport's relatively low elevation of 226 feet, planes can take off or land at Francisco Sá Carneiro 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.
• Francisco Sá Carneiro Airport (OPO) currently has only 1 runway.
• It includes an area of between 72 metres in the extreme south and 43 metres in the north.
• Francisco Sá Carneiro Airport handled 6,050,094 passengers last year.

Facts about Knox County Regional Airport (RKD):

• The furthest airport from Knox County Regional Airport (RKD) is Albany Airport (ALH), which is located 11,708 miles (18,842 kilometers) away in Albany, Western Australia, Australia.
• During the summer months, the airport is one of Maine's busiest, with significant private jet operations bringing visitors to the numerous summer colonies in the Penobscot Bay region.
• As per Federal Aviation Administration records, the airport had 13,866 passenger boardings in calendar year 2008, 14,461 enplanements in 2009, and 17,657 in 2010.
• The closest airport to Knox County Regional Airport (RKD) is Wiscasset Airport (ISS), which is located 31 miles (50 kilometers) WSW of RKD.
• The airport was built during World War II and became locally known as the "Ash Point Naval Air Station" while officially operating as Rockland Naval Auxiliary Air Facility from April 15, 1943 until February 1, 1946.
• Because of Knox County Regional Airport's relatively low elevation of 56 feet, planes can take off or land at Knox County 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.
• Knox County Regional Airport (RKD) has 2 runways.