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

Return flights

30 Dec - 13 Jan	Viva
31 Dec - 08 Jan	Frontier Airlines
30 Dec - 09 Jan	Viva
26 Dec - 29 Dec	Delta
23 Dec - 26 Dec	Frontier Airlines
24 Dec - 27 Dec	Frontier Airlines
23 Dec - 29 Dec	Frontier Airlines
23 Dec - 31 Dec	Frontier Airlines
22 Dec - 10 Jan	Frontier Airlines
26 Dec - 13 Jan	United
24 Dec - 01 Jan	United
25 Dec - 05 Jan	Spirit Airlines
24 Dec - 02 Jan	Frontier Airlines
23 Dec - 02 Jan	Frontier Airlines
23 Dec - 01 Jan	Delta

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 1047€

Return flights