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

Return flights

06 Sep - 22 Sep	Air China
02 Sep - 17 Sep	Air China
16 Sep - 22 Sep	Air China
18 Sep - 22 Sep	Air China
03 Sep - 22 Sep	Air China
06 Sep - 17 Sep	Air China
24 Sep - 13 Oct	easyJet
26 Sep - 09 Oct	Shenzhen Airlines
03 Sep - 10 Sep	Air China
06 Sep - 24 Sep	Air China
06 Sep - 19 Sep	Air China
29 Sep - 09 Oct	Shenzhen Airlines
18 Sep - 28 Oct	Air China
09 Sep - 18 Sep	Air China
22 Sep - 12 Oct	easyJet
26 Sep - 12 Oct	Shenzhen Airlines
20 Sep - 20 Oct	Ryanair
19 Sep - 05 Oct	Shenzhen Airlines
26 Sep - 07 Oct	Air China
28 Sep - 30 Oct	Ryanair

Also check the deals for one-way flights from Barcelona 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 Barcelona to Hanoi in September from $587

Return flights