Nonstop flight route between Udon Thani, Thailand and Chicago, Illinois, United States:

About this route:

A direct, nonstop flight between Udon Thani International Airport ท่าอากาศยานอุดรธานี (UTH), Udon Thani, Thailand and Chicago O'Hare International Airport (ORD), Chicago, Illinois, United States would travel a Great Circle distance of 8,279 miles (or 13,323 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 Udon Thani International Airport ท่าอากาศยานอุดรธานี and Chicago O'Hare 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 Udon Thani International Airport ท่าอากาศยานอุดรธานี and Chicago O'Hare 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 Udon Thani International Airport ท่าอากาศยานอุดรธานี (UTH):

• The furthest airport from Udon Thani International Airport ท่าอากาศยานอุดรธานี (UTH) is Maria Reiche Neuman Airport (NZC), which is nearly antipodal to Udon Thani International Airport ท่าอากาศยานอุดรธานี (meaning Udon Thani International Airport ท่าอากาศยานอุดรธานี is almost on the exact opposite side of the Earth from Maria Reiche Neuman Airport), and is located 12,207 miles (19,645 kilometers) away in Nazca, Ica Region, Peru.
• Because of Udon Thani International Airport ท่าอากาศยานอุดรธานี's relatively low elevation of 579 feet, planes can take off or land at Udon Thani International Airport ท่าอากาศยานอุดรธานี 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.
• 231 Squadron flies 17 Dassault-Breguet-Dornier Alpha Jet A airplanes acquired second hand from the German Air Force and delivered in 2001.
• On February 8, 2006, an international group of skydivers from 31 countries called "the World Team" set a World Record for the largest freefall formation, a 400-way, over the Udon Thani airport.
• Udon Thani International Airport ท่าอากาศยานอุดรธานี (UTH) currently has only 1 runway.
• As well as being a commercial facility, Udon Thani International Airport is also an active Royal Thai Air Force base, the home of Wing 23, 2nd Air Division Air Combat Command.
• The closest airport to Udon Thani International Airport ท่าอากาศยานอุดรธานี (UTH) is Wattay International Airport (VTE), which is located 44 miles (71 kilometers) NNW of UTH.

Facts about Chicago O'Hare International Airport (ORD):

• In 1953, while traveling to an airshow at Naval Air Station Glenview in Chicago, Illinois, Blue Angels pilot LT Harding MacKnight experienced an engine flameout in his F7U Cutlass, forcing him to make an emergency landing at NAS Glenview.
• The closest airport to Chicago O'Hare International Airport (ORD) is Chicago Executive Airport (PWK), which is located only 9 miles (15 kilometers) N of ORD.
• The furthest airport from Chicago O'Hare International Airport (ORD) is Margaret River Airport (MGV), which is located 11,071 miles (17,817 kilometers) away in Margaret River, Western Australia, Australia.
• Chicago O'Hare International Airport (ORD) has 8 runways.
• Because of Chicago O'Hare International Airport's relatively low elevation of 668 feet, planes can take off or land at Chicago O'Hare 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.
• United Airlines is the largest airline at O'Hare, carrying over 45% of all passengers passing through the airport.
• In 2013, the Chicago Department of Aviation appropriated a $19,500 two-year contract to use livestock, specifically goats, sheep, llamas, and burros, to assist with grounds maintenance.
• United also runs a post-security shuttle service between Concourse C and Concourses E & F in Terminal 2.
• By the early 1950s, Chicago Midway International Airport, Chicago's primary airport since 1931, had become too crowded despite multiple expansions and could not handle the planned first generation of jets.
• Due to the construction of Terminal 1 for United, international flights were relocated to a temporary Terminal 4 from 1984 until 1993.