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

Return flights

13 Oct - 15 Oct	Thai AirAsia
03 Oct - 09 Oct	IndiGo
13 Oct - 14 Oct	Thai AirAsia
19 Oct - 08 Nov	Thai AirAsia
08 Oct - 15 Oct	AirAsia
13 Oct - 29 Oct	Thai AirAsia
20 Oct - 08 Nov	Thai AirAsia
21 Oct - 08 Nov	Thai AirAsia
13 Oct - 31 Oct	Thai AirAsia
13 Oct - 24 Oct	Thai AirAsia
22 Oct - 08 Nov	Thai AirAsia
08 Oct - 10 Oct	Thai AirAsia
08 Oct - 13 Oct	Thai AirAsia
08 Oct - 14 Oct	Thai AirAsia
25 Oct - 08 Nov	Thai AirAsia
19 Oct - 07 Nov	Thai AirAsia
20 Oct - 07 Nov	Thai AirAsia
21 Oct - 07 Nov	Thai AirAsia
22 Oct - 07 Nov	Thai AirAsia
25 Oct - 07 Nov	Thai AirAsia

Also check the deals for one-way flights from Kolkata to Hanoi 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 Kolkata to Hanoi in October from 285€

Return flights