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

Return flights

03 Sep - 25 Sep	Ryanair
02 Sep - 30 Sep	Lufthansa
04 Sep - 25 Sep	Lufthansa
19 Sep - 10 Oct	Ethiopian Airlines
14 Sep - 21 Sep	Ethiopian Airlines
12 Sep - 21 Sep	Ethiopian Airlines
09 Sep - 23 Sep	Thai Airways
02 Sep - 22 Sep	Thai Airways
21 Sep - 29 Sep	Thai Airways
18 Sep - 09 Oct	Thai Airways
23 Sep - 09 Oct	Thai Airways
04 Sep - 21 Sep	Brussels Airlines
04 Sep - 13 Sep	Thai Airways
19 Sep - 11 Oct	Thai Airways
29 Sep - 14 Oct	Emirates
20 Sep - 04 Oct	Emirates
28 Sep - 26 Oct	Brussels Airlines

Also check the deals for one-way flights from Brussels 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 Brussels to Hanoi in September from 724€

Return flights