Chiang Mai International Airport (IATA: CNX, ICAO: VTCC) is an international airport in Suthep subdistrict, Mueang Chiang Mai district, Chiang Mai province in northern Thailand. It is a major gateway that links northern Thailand to the rest of the region, and currently the fourth-busiest airport in the country. It is managed by Airports of Thailand.

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Chiang Mai International Airport ท่าอากาศยานเชียงใหม่
IATA: CNX ICAO: VTCC
Summary
Airport type	Public / Military
Owner	Royal Thai Air Force
Operator	Airports of Thailand (AOT)
Serves	Chiang Mai
Location	Suthep, Mueang Chiang Mai, Chiang Mai, Thailand
Opened	1 October 1921; 102 years ago (1921-10-01)
Focus city for	Thai Airways International
Operating base for	Bangkok Airways Nok Air Thai AirAsia
Elevation AMSL	1,036 ft / 316 m
Coordinates	18°46′00″N 098°57′45″E
Website	chiangmai.airportthai.co.th
Maps
CNX/VTCC Show map of Chiang Mai Province CNX/VTCC Show map of Thailand
Runways
Direction Length Surface m ft 18/36 3,400 11,155 Asphalt concrete
Statistics (2023)
Total passengers 8,224,573 50.65% International passengers 1,878,891 646.09% Domestic passengers 6,345,682 21.85% Aircraft movements 55,663 42.63% Freight (tonnes) 5,255 5.89%
Source:[1]: 1  Airports of Thailand[2]

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The airport was established in 1921 as Suthep Airport.^[3]

As a result of the temporary closure of Suvarnabhumi Airport in 2008 due to the protests, Chiang Mai became the alternative stop-over for China Airlines' Taipei-Europe flights and for Swiss International Air Lines' Singapore-Zurich flights in the interim. On 24 January 2011, the airport became a secondary hub for Thai AirAsia.^[4] The China Airlines flights are now regular flights.

Upgrades in 2014 included expanding the apron for larger planes, extending operating hours to 24/7 (effective April 2014), and enlarging the international arrival hall and domestic departure hall.^[5]

The Airports of Thailand expanded the terminal with upgrades in 2014 including expansion of the apron for larger planes, extending operating hours to 24/7 (effective April 2014), and enlarging the international arrival hall and domestic departure hall.^[5] As of 2018, 31 airlines operated at CNX, serving 11 million passengers, 78,210 flights and 14,612 tonnes of cargo.^[6]

The airport is at an elevation of 316 metres (1,037 ft) above mean sea level. It has one runway designated 18/36 with an asphalt surface measuring 3,100 by 45 metres (10,171 ft × 148 ft).^[7] There are two terminals, one for domestic passengers and the other for international flights.^{[citation needed]}