AirHint found the following cheapest return flights from Kolkata (CCU) to Hanoi (HAN) in July 2026 (see full year).
Return flights
| 07 Jul - 13 Jul | IndiGo | direct | |
| 15 Jul - 22 Jul | IndiGo | direct | |
| 21 Jul - 25 Jul | IndiGo | direct | |
| 24 Jul - 31 Jul | IndiGo | direct | |
| 18 Jul - 24 Jul | IndiGo | direct |
Also check the deals for one-way flights from Kolkata to Hanoi in July.
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