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

Return flights

25 Sep - 06 Oct	Spirit Airlines
10 Sep - 17 Sep	Spirit Airlines
04 Sep - 08 Sep	Spirit Airlines
07 Sep - 12 Sep	Spirit Airlines
17 Sep - 24 Sep	Spirit Airlines
07 Sep - 14 Sep	Spirit Airlines
27 Sep - 29 Sep	Spirit Airlines
19 Sep - 26 Sep	Spirit Airlines
28 Sep - 05 Oct	Spirit Airlines
22 Sep - 29 Sep	Spirit Airlines
28 Sep - 05 Oct	United	direct
17 Sep - 24 Sep	United	direct
22 Sep - 29 Sep	United	direct

Also check the deals for one-way flights from Houston to Rio De Janeiro in September.

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 September from 556€

Return flights