AirHint found the following cheapest return flights from Houston (IAH) to Rio De Janeiro (GIG) in December 2025 (see full year).

Return flights

12 Dec - 14 Dec	Spirit Airlines
16 Dec - 21 Dec	Spirit Airlines
14 Dec - 20 Dec	Spirit Airlines
04 Dec - 14 Dec	United	direct
08 Dec - 15 Jan	United	direct
10 Dec - 15 Jan	United	direct
30 Dec - 02 Jan	Spirit Airlines
27 Dec - 05 Jan	LATAM Airlines Group
27 Dec - 04 Jan	Spirit Airlines
14 Dec - 20 Dec	United	direct
16 Dec - 21 Dec	United	direct
12 Dec - 14 Dec	United	direct

Also check the deals for one-way flights from Houston to Rio De Janeiro 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 Rio De Janeiro in December from $765

Return flights