AirHint found the following cheapest return flights from Chiang Mai (CNX) to Kolkata (CCU) in October 2025 (see full year).

Return flights

03 Oct - 22 Oct	Thai AirAsia
03 Oct - 15 Oct	Thai AirAsia
03 Oct - 05 Oct	Thai AirAsia
06 Oct - 22 Oct	Thai AirAsia
06 Oct - 15 Oct	Thai AirAsia
03 Oct - 23 Oct	Thai AirAsia
26 Oct - 01 Nov	Thai AirAsia
06 Oct - 23 Oct	Thai AirAsia
26 Oct - 06 Nov	Thai AirAsia
04 Oct - 22 Oct	Thai AirAsia
26 Oct - 03 Nov	Thai AirAsia
04 Oct - 15 Oct	Thai AirAsia
04 Oct - 23 Oct	Thai AirAsia

Also check the deals for one-way flights from Chiang Mai to Kolkata in October.

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.

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Cheapest return flights from Chiang Mai to Kolkata in October from 286€

Return flights