AirHint found the following cheapest return flights from Houston (HOU) to Quito (UIO) in August 2025 (see full year).

Return flights

26 Aug - 09 Sep	Spirit Airlines
27 Aug - 07 Sep	Spirit Airlines
21 Aug - 29 Aug	Spirit Airlines
21 Aug - 08 Sep	Spirit Airlines
29 Aug - 01 Sep	Spirit Airlines
18 Aug - 23 Aug	Spirit Airlines
29 Aug - 01 Sep	United	direct

Also check the deals for one-way flights from Houston to Quito in August.

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 Quito in August from 450€

Return flights