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

Return flights

02 Dec - 09 Dec	Spirit Airlines
13 Dec - 20 Dec	Spirit Airlines
15 Dec - 22 Dec	Avianca
01 Dec - 08 Dec	United	direct
02 Dec - 09 Dec	United	direct
15 Dec - 22 Dec	United	direct
18 Dec - 21 Dec	Spirit Airlines
17 Dec - 27 Dec	LATAM Airlines Group
12 Dec - 01 Jan	Spirit Airlines
29 Dec - 05 Jan	Spirit Airlines
13 Dec - 20 Dec	United	direct
17 Dec - 27 Dec	United	direct
26 Dec - 09 Jan	Delta
16 Dec - 04 Jan	LATAM Airlines Group
12 Dec - 04 Jan	Delta
17 Dec - 05 Jan	Delta
19 Dec - 08 Jan	Delta
18 Dec - 04 Jan	LATAM Airlines Group

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 751€

Return flights