The best price found from United States to Chiang Mai is on October 20th, 2016, travelling with Singapore Airlines. See more options, compare prices and book: search flights.
Domestic and international flights arrive and depart from Chiang Mai International Airport, 3km southwest of the old city.
Schedules vary with the seasons and tourist demand. Thai Airways has the widest range of domestic routes, but the network of Thai Air Asia is rapidly expanding, and Chiang Mai is served by many more budget airlines. Tickets to Bangkok start from 1800B with Bangkok Airways, or 2200B on Thai. Heading south, expect to pay from 2350B to Phuket, or 1650B to Surat Thani.
Direct flights linking Chiang Mai to neighbouring nations are also expanding fast, with regular flights to Yangon (from 4950B), Luang Prabang (from 5000B) and Kuala Lumpur (3340B). There are also direct flights to Singapore, Seoul and Taipei, and to Hong Kong, Shanghai, Guangzhou, Hangzhou, Chengdu and other cities in China. To reach Cambodia or Vietnam, you'll have to go via Bangkok. SM Travel in the old city is a good place to book flights.
The airport has luggage storage (7am to 9pm, 200B per day), a post office branch (8.30am to 8pm), banks, souvenir shops and a tourist assistance centre. If you have time to kill, you could just stroll back down the highway to the large Central Airport Plaza.