AirHint found the following cheapest return flights from Sao Paulo (GRU) to Hanoi (HAN) in December 2025 (see full year).

Return flights

01 Dec - 08 Dec	LATAM Airlines Group
30 Dec - 11 Jan	Ethiopian Airlines
11 Dec - 18 Dec	Air Europa
11 Dec - 25 Dec	LATAM Airlines Group
30 Dec - 22 Jan	Ethiopian Airlines
23 Dec - 04 Jan	Avianca
31 Dec - 07 Jan	Beijing Capital Airlines
23 Dec - 30 Dec	Ethiopian Airlines
20 Dec - 06 Jan	LATAM Airlines Group
14 Dec - 19 Dec	Qatar Airways

Also check the deals for one-way flights from Sao Paulo to Hanoi in December.

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 Sao Paulo to Hanoi in December from $1428

Return flights