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

Return flights

24 Dec - 29 Dec	Frontier Airlines
30 Dec - 09 Jan	Frontier Airlines
24 Dec - 30 Dec	Spirit Airlines
26 Dec - 06 Jan	Frontier Airlines
20 Dec - 27 Dec	Spirit Airlines
26 Dec - 05 Jan	Frontier Airlines
21 Dec - 04 Jan	Spirit Airlines
25 Dec - 06 Jan	Air Canada
17 Dec - 03 Jan	Spirit Airlines
22 Dec - 29 Dec	United	direct
24 Dec - 29 Dec	United	direct
24 Dec - 30 Dec	United	direct
25 Dec - 01 Jan	American Airlines
20 Dec - 28 Dec	United	direct
20 Dec - 27 Dec	United	direct
21 Dec - 04 Jan	United	direct
17 Dec - 03 Jan	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 $1008

Return flights