Nonstop flight route between St. Louis, Missouri, United States and Haiphong, Vietnam:

About this route:

A direct, nonstop flight between Lambert–St. Louis International Airport (STL), St. Louis, Missouri, United States and Cat Bi International Airport (HPH), Haiphong, Vietnam would travel a Great Circle distance of 8,175 miles (or 13,156 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 Lambert–St. Louis 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 Lambert–St. Louis 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 Lambert–St. Louis International Airport (STL):

• In June 1920, the Aero Club of St.
• Lambert's passenger traffic slowly rebounded from American Airlines' cuts of November 2003, increasing from a low of 13.4 million passengers enplaned in 2004, to 15.4 million by 2007, and increase of almost 15 percent.
• The closest airport to Lambert–St. Louis International Airport (STL) is St. Louis Downtown Airport (CPS), which is located only 16 miles (27 kilometers) SE of STL.
• In May 2013, Moody's raised its rating on Lambert Airport's bonds to A3-stable outlook from Baa1 with a stable outlook.
• In 2006, the United States Air Force announced plans to turn the 131st Fighter Wing of the Missouri Air National Guard into the 131st Bomb Wing.
• Because of Lambert–St. Louis International Airport's relatively low elevation of 605 feet, planes can take off or land at Lambert–St. Louis 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.
• TWA's hub grew again in 1986 when the airline bought Ozark Airlines, which had its hub at Lambert's Concourse D.
• Lambert–St. Louis International Airport (STL) has 4 runways.
• In 1982, Trans World Airlines moved its hub from Kansas City International Airport.
• The furthest airport from Lambert–St. Louis International Airport (STL) is Margaret River Airport (MGV), which is located 10,986 miles (17,681 kilometers) away in Margaret River, Western Australia, Australia.

Facts about Cat Bi International Airport (HPH):

• 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.
• Cat Bi International Airport (HPH) currently has only 1 runway.
• 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.
• 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.