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

Return flights

07 Sep - 23 Sep	Air Arabia
26 Sep - 04 Oct	Air Arabia
01 Sep - 06 Sep	Air Arabia
01 Sep - 11 Sep	Air Arabia
04 Sep - 14 Sep	Air Arabia
15 Sep - 22 Sep	Singapore Airlines
17 Sep - 22 Sep	Turkish Airlines
19 Sep - 13 Oct	Singapore Airlines
21 Sep - 05 Oct	Singapore Airlines
07 Sep - 12 Sep	Emirates
04 Sep - 07 Sep	Emirates
30 Sep - 18 Oct	Aegean Airlines
28 Sep - 25 Oct	Aegean Airlines
09 Sep - 16 Sep	Qatar Airways

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 514€

Return flights