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

Return flights

09 Jul - 16 Jul	Ryanair
16 Jul - 23 Jul	Aer Lingus
23 Jul - 30 Jul	Ryanair
28 Jul - 12 Aug	Ryanair
29 Jul - 13 Aug	Ryanair
21 Jul - 24 Jul	Ryanair
14 Jul - 21 Jul	Aer Lingus
08 Jul - 15 Jul	Ryanair
08 Jul - 29 Jul	Ryanair
30 Jul - 13 Aug	Ryanair
28 Jul - 11 Aug	Ryanair
16 Jul - 06 Aug	Aer Lingus
28 Jul - 10 Aug	Ryanair
31 Jul - 10 Aug	Aer Lingus
14 Jul - 12 Aug	Ryanair
24 Jul - 31 Jul	Vueling Airlines
31 Jul - 14 Aug	Aer Lingus
29 Jul - 29 Aug	Aer Lingus
22 Jul - 29 Jul	Aegean Airlines
07 Jul - 27 Jul	Ryanair

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

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 July from 691€

Return flights