AirHint found the following cheapest return flights from Houston (IAH) to Ho Chi Minh City (SGN) in October 2025 (see full year).

Return flights

07 Oct - 21 Oct	Frontier Airlines
16 Oct - 23 Oct	Frontier Airlines
13 Oct - 20 Oct	Frontier Airlines
23 Oct - 30 Oct	Frontier Airlines
02 Oct - 24 Oct	Frontier Airlines
08 Oct - 24 Oct	Spirit Airlines
13 Oct - 12 Nov	Spirit Airlines
22 Oct - 31 Oct	Frontier Airlines
19 Oct - 30 Oct	Frontier Airlines
20 Oct - 26 Nov	Spirit Airlines
21 Oct - 26 Nov	Spirit Airlines
24 Oct - 01 Nov	Frontier Airlines
07 Oct - 18 Oct	Frontier Airlines
22 Oct - 26 Nov	Frontier Airlines
24 Oct - 31 Oct	Frontier Airlines
30 Oct - 27 Nov	Cathay Pacific
16 Oct - 30 Nov	Cathay Pacific

Also check the deals for one-way flights from Houston to Ho Chi Minh City in October.

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 Ho Chi Minh City in October from $724

Return flights