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

Return flights

10 Dec - 17 Dec	WestJet
13 Dec - 21 Dec	Spirit Airlines
12 Dec - 12 Jan	Spirit Airlines
16 Dec - 24 Dec	Frontier Airlines
13 Dec - 29 Dec	Spirit Airlines
13 Dec - 10 Jan	Spirit Airlines
14 Dec - 10 Jan	Spirit Airlines
11 Dec - 05 Jan	WestJet
14 Dec - 08 Jan	Spirit Airlines
04 Dec - 14 Dec	United
23 Dec - 31 Dec	WestJet
18 Dec - 29 Dec	Zipair
20 Dec - 31 Dec	Frontier Airlines
21 Dec - 31 Dec	Turkish Airlines
18 Dec - 03 Jan	Zipair
17 Dec - 12 Jan	Air France
25 Dec - 02 Jan	United
17 Dec - 09 Jan	United
19 Dec - 03 Jan	Frontier 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 796€

Return flights