Nonstop flight route between Philadelphia, Pennsylvania, United States and Haiphong, Vietnam:

About this route:

A direct, nonstop flight between Philadelphia International Airport (PHL), Philadelphia, Pennsylvania, United States and Cat Bi International Airport (HPH), Haiphong, Vietnam would travel a Great Circle distance of 8,242 miles (or 13,263 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 Philadelphia International Airport and Cat Bi International 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 Philadelphia International Airport and Cat Bi International 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 Philadelphia International Airport (PHL):

• Because of Philadelphia International Airport's relatively low elevation of 36 feet, planes can take off or land at Philadelphia 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 second study, the PHL Capacity Enhancement Program has a much larger scope and is considering more drastic ways to increase runway capacity at PHL.
• On June 20, 1940, the airport's weather station became as the official point for Philadelphia weather observations and records by the National Weather Service.
• In 1947 and 1950 the airport had runways 4, 9, 12 and 17, all of 5400 ft or less.
• Philadelphia International Airport (PHL) has 4 runways.
• As a benefit to students, local schools including The University of Pennsylvania, Villanova University, Swarthmore College, Haverford College and Saint Joseph's University traditionally operate transportation shuttles to the airport during heavy travel periods such as spring and Thanksgiving breaks.
• Philadelphia Municipal became Philadelphia International in 1945, when American Overseas Airlines began direct flights to Europe.
• In 2004 Southwest Airlines announced it would begin flights from PHL, challenging US Airways in some of its important East Coast and Midwest markets.
• The furthest airport from Philadelphia International Airport (PHL) is Margaret River Airport (MGV), which is located 11,734 miles (18,884 kilometers) away in Margaret River, Western Australia, Australia.
• The closest airport to Philadelphia International Airport (PHL) is Philadelphia Seaplane BaseChandler Field (PSQ), which is located only 3 miles (5 kilometers) WSW of PHL.

Facts about Cat Bi International Airport (HPH):

• Cat Bi International Airport (HPH) currently has only 1 runway.
• In addition to being known as "Cat Bi International Airport", another name for HPH is "Sân bay Quốc tế Cát Bi".
• The closest airport to Cat Bi International Airport (HPH) is Nội Bài International Airport (HAN), which is located 65 miles (105 kilometers) WNW of HPH.
• The furthest airport from Cat Bi International Airport (HPH) is Diego Aracena International Airport (IQQ), which is nearly antipodal to Cat Bi International Airport (meaning Cat Bi International Airport is almost on the exact opposite side of the Earth from Diego Aracena International Airport), and is located 12,236 miles (19,692 kilometers) away in Iquique, Chile.
• Because of Cat Bi International Airport's relatively low elevation of 13 feet, planes can take off or land at Cat Bi 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.