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

Return flights

14 Jul - 23 Jul	Spirit Airlines
14 Jul - 22 Jul	Spirit Airlines
09 Jul - 21 Jul	Spirit Airlines
28 Jul - 04 Aug	Zipair
25 Jul - 10 Aug	WestJet
27 Jul - 03 Aug	WestJet
14 Jul - 02 Aug	Spirit Airlines
18 Jul - 26 Jul	WestJet
09 Jul - 02 Aug	Spirit Airlines
14 Jul - 25 Jul	Air Canada
19 Jul - 09 Aug	WestJet
08 Jul - 02 Aug	Spirit Airlines
31 Jul - 29 Aug	Air Canada
12 Jul - 02 Aug	WestJet

Also check the deals for one-way flights from Houston to Seoul in July.

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 July from $1122

Return flights