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

Return flights

09 Dec - 16 Dec	Turkish Airlines
01 Dec - 12 Dec	Turkish Airlines
26 Dec - 07 Jan	Air Canada
24 Dec - 31 Dec	Turkish Airlines
15 Dec - 22 Dec	Spirit Airlines
20 Dec - 02 Jan	Zipair
22 Dec - 31 Dec	Turkish Airlines
20 Dec - 06 Jan	Zipair
21 Dec - 01 Jan	Turkish Airlines
22 Dec - 07 Jan	Air Canada
17 Dec - 17 Jan	Air Canada
13 Dec - 21 Dec	United
20 Dec - 03 Jan	Zipair
22 Dec - 02 Jan	Turkish Airlines
18 Dec - 04 Jan	Turkish Airlines
17 Dec - 03 Jan	Spirit Airlines

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

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 December from $1001

Return flights