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

Return flights

14 Aug - 26 Aug	WestJet
29 Aug - 13 Sep	Zipair
22 Aug - 06 Sep	Zipair
08 Aug - 23 Aug	Air Canada
04 Aug - 18 Aug	Turkish Airlines
01 Aug - 13 Aug	Frontier Airlines
03 Aug - 09 Aug	WestJet
01 Aug - 03 Aug	EVA Air
08 Aug - 22 Aug	Air Canada
01 Aug - 17 Aug	United

Also check the deals for one-way flights from Houston to Seoul 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 Seoul in August from $937

Return flights