AirHint found the following cheapest return flights from Kolkata (CCU) to Hanoi (HAN) in April 2026 (see full year).

Return flights

05 Apr - 10 Apr	IndiGo	direct
21 Apr - 25 Apr	IndiGo	direct
30 Apr - 06 May	IndiGo	direct
05 Apr - 09 Apr	IndiGo	direct
19 Apr - 26 Apr	IndiGo	direct
06 Apr - 17 Apr	IndiGo	direct
08 Apr - 13 Apr	IndiGo	direct
19 Apr - 25 Apr	IndiGo
02 Apr - 10 Apr	IndiGo
03 Apr - 10 Apr	Thai AirAsia
25 Apr - 03 May	IndiGo
30 Apr - 09 May	IndiGo
06 Apr - 12 Apr	IndiGo

Also check the deals for one-way flights from Kolkata to Hanoi in April.

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 April from 211€

Return flights