Cheapest one-way flights from New York to Chiang Mai in September from $406

AirHint found the following cheapest one-way flights from New York (LGA) to Chiang Mai (CNX) in September 2025 (see full year).

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.