Nonstop flight route between Chiang Rai, Thailand and St. Louis, Missouri, United States:

About this route:

A direct, nonstop flight between Chiang Rai International Airport (CEI), Chiang Rai, Thailand and Lambert–St. Louis International Airport (STL), St. Louis, Missouri, United States would travel a Great Circle distance of 8,327 miles (or 13,401 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 Chiang Rai International Airport and Lambert–St. Louis 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 Chiang Rai International Airport and Lambert–St. Louis 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 Chiang Rai International Airport (CEI):

• The airport's IATA code is CEI and economical flights are made several times daily to Bangkok-Suvarnabhumi which is a regional hub airport with daily flights to every major city in the world.
• The airport is located about 10 km from the city centre.
• In addition to being known as "Chiang Rai International Airport", another name for CEI is "ท่าอากาศยานแม่ฟ้าหลวง เชียงราย".
• The furthest airport from Chiang Rai International Airport (CEI) is Maria Reiche Neuman Airport (NZC), which is located 11,947 miles (19,227 kilometers) away in Nazca, Ica Region, Peru.
• Chiang Rai International Airport (CEI) currently has only 1 runway.
• Chiang Rai International Airport handled 1,053,863 passengers last year.
• The closest airport to Chiang Rai International Airport (CEI) is Tachilek Airport (THL), which is located 37 miles (59 kilometers) N of CEI.
• A new road which can be accessed by turning left upon exiting the airport also leads southbound to the city centre and is a less congested route, as it is not used by intercity buses heading north.

Facts about Lambert–St. Louis International Airport (STL):

• Robertson Airlines, Marquette Airlines, and Eastern Air Lines provided passenger service to St.
• Ozark Airlines established its only hub at Lambert in the late 1950s.
• 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 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.
• As of May 2012, the airport is on a significant upswing, with traffic up by about 14%.
• 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.
• Lambert–St. Louis International Airport (STL) has 4 runways.
• 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.