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

Return flights

23 Sep - 04 Oct	Air China
20 Sep - 04 Oct	Air China
16 Sep - 03 Oct	Air China
13 Sep - 03 Oct	Air China
14 Sep - 04 Oct	Air China
14 Sep - 03 Oct	Air China
15 Sep - 03 Oct	Air China
16 Sep - 02 Oct	Air China
20 Sep - 02 Oct	Air China
16 Sep - 01 Oct	Air China
10 Sep - 22 Sep	Wizz Air Malta
01 Sep - 12 Sep	Sichuan Airlines
07 Sep - 19 Sep	Sichuan Airlines
05 Sep - 19 Sep	Sichuan Airlines
08 Sep - 22 Sep	Etihad Airways
04 Sep - 19 Sep	Wizz Air Malta
08 Sep - 15 Sep	Etihad Airways
08 Sep - 24 Sep	Etihad Airways
10 Sep - 24 Sep	Ryanair
18 Sep - 30 Sep	Etihad Airways

Also check the deals for one-way flights from Madrid 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 Madrid to Hanoi in September from $712

Return flights