AirHint found the following cheapest return flights from Dublin (DUB) to Hanoi (HAN) in August 2025 (see full year).

Return flights

25 Aug - 30 Sep	Ryanair
25 Aug - 15 Sep	Aer Lingus
20 Aug - 18 Sep	KLM
29 Aug - 10 Sep	Ryanair
25 Aug - 22 Sep	Ryanair
20 Aug - 20 Sep	Ryanair
30 Aug - 13 Sep	Ryanair
21 Aug - 12 Sep	Ryanair
25 Aug - 31 Aug	Aer Lingus
24 Aug - 09 Sep	Hainan Airlines
22 Aug - 31 Aug	KLM
24 Aug - 08 Sep	IndiGo
16 Aug - 23 Aug	Ryanair
05 Aug - 12 Aug	Ryanair
03 Aug - 12 Aug	Ryanair
14 Aug - 28 Aug	Ryanair
11 Aug - 28 Aug	Aer Lingus
14 Aug - 23 Aug	Ryanair
13 Aug - 20 Aug	Ryanair
16 Aug - 26 Aug	Aer Lingus

Also check the deals for one-way flights from Dublin to Hanoi in August.

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 Dublin to Hanoi in August from 645€

Return flights