AirHint found the following cheapest return flights from Houston (IAH) to Buenos Aires (EZE) in December 2025 (see full year).

Return flights

16 Dec - 23 Dec	Avianca
18 Dec - 29 Dec	Volaris
28 Dec - 05 Jan	Avianca
21 Dec - 08 Jan	Viva
16 Dec - 23 Dec	United	direct
26 Dec - 04 Jan	Avianca
12 Dec - 04 Jan	Avianca
18 Dec - 29 Dec	United	direct
28 Dec - 05 Jan	United	direct
26 Dec - 04 Jan	United	direct
12 Dec - 04 Jan	United	direct

Also check the deals for one-way flights from Houston to Buenos Aires 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 Houston to Buenos Aires in December from $954

Return flights