Nonstop flight route between St. Louis, Missouri, United States and Huế, Thừa Thiên–Huế, Vietnam:

About this route:

A direct, nonstop flight between Lambert–St. Louis International Airport (STL), St. Louis, Missouri, United States and Phu Bai International Airport (HUI), Huế, Thừa Thiên–Huế, Vietnam would travel a Great Circle distance of 8,451 miles (or 13,601 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 Phu Bai 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 Phu Bai 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 1925, the airport became home to Naval Air Station St.
• In 1982, Trans World Airlines moved its hub from Kansas City International Airport.
• 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.
• The September 11, 2001 terrorist attacks were a huge demand shock to air service nationwide, with total airline industry domestic revenue passenger miles dropping 20% in October 2001 and 17% in November 2001.
• Lambert–St. Louis International Airport (STL) has 4 runways.
• American Airlines is now the airport's second-busiest operating airline.
• 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.
• 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 Phu Bai International Airport (HUI):

• The closest airport to Phu Bai International Airport (HUI) is Đà Nẵng International Airport (DAD), which is located 41 miles (66 kilometers) SE of HUI.
• Phu Bai International Airport (HUI) currently has only 1 runway.
• The furthest airport from Phu Bai International Airport (HUI) is Rodríguez Ballón International Airport (AQP), which is nearly antipodal to Phu Bai International Airport (meaning Phu Bai International Airport is almost on the exact opposite side of the Earth from Rodríguez Ballón International Airport), and is located 12,389 miles (19,939 kilometers) away in Arequipa, Peru.
• Because of Phu Bai International Airport's relatively low elevation of 49 feet, planes can take off or land at Phu Bai 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.
• In addition to being known as "Phu Bai International Airport", another name for HUI is "Sân bay Quốc tế Phú Bài".