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

Return flights

19 Sep - 04 Oct	easyJet
18 Sep - 04 Oct	Vueling Airlines
21 Sep - 12 Oct	Vueling Airlines
16 Sep - 04 Oct	easyJet
09 Sep - 25 Sep	Air China
04 Sep - 24 Sep	Air China
02 Sep - 09 Sep	Air China
10 Sep - 21 Sep	Air China
12 Sep - 15 Oct	Air China
16 Sep - 23 Sep	Vueling Airlines
08 Sep - 18 Sep	Air China
08 Sep - 24 Sep	Air China
02 Sep - 22 Sep	Air China
01 Sep - 24 Sep	Air China
06 Sep - 16 Sep	Vueling Airlines
03 Sep - 01 Oct	Air China
27 Sep - 10 Oct	Ryanair
29 Sep - 07 Oct	Shenzhen Airlines
26 Sep - 31 Oct	Vueling Airlines
27 Sep - 11 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 $664

Return flights