AirHint found the following cheapest return flights from Athens (ATH) to Hanoi (HAN) in September 2025 (see full year).

Return flights

15 Sep - 20 Oct	Air Arabia
21 Sep - 26 Oct	Air Arabia
22 Sep - 12 Oct	Air Arabia
15 Sep - 15 Oct	Air Arabia
18 Sep - 13 Oct	Air Arabia
24 Sep - 12 Oct	Air China
27 Sep - 30 Sep	Air Arabia
22 Sep - 16 Oct	Air Arabia
17 Sep - 25 Sep	Air Arabia
29 Sep - 13 Oct	Gulf Air
17 Sep - 04 Oct	Air Arabia
18 Sep - 04 Oct	Air Arabia
17 Sep - 24 Sep	Air Arabia
16 Sep - 27 Sep	Air Arabia
24 Sep - 28 Sep	Air Arabia
24 Sep - 27 Sep	Air Arabia
11 Sep - 18 Sep	Pegasus Airlines
17 Sep - 27 Sep	Air Arabia
14 Sep - 21 Sep	Gulf Air

Also check the deals for one-way flights from Athens to Hanoi in September.

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 Athens to Hanoi in September from 576€

Return flights