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

Return flights

01 Dec - 08 Dec	Delta
05 Dec - 21 Dec	American Airlines
04 Dec - 21 Dec	American Airlines
04 Dec - 19 Dec	Delta
05 Dec - 22 Dec	American Airlines
05 Dec - 19 Dec	Delta
05 Dec - 18 Dec	American Airlines
04 Dec - 18 Dec	American Airlines
03 Dec - 18 Dec	American Airlines
30 Dec - 17 Jan	United
06 Dec - 22 Dec	Delta
09 Dec - 15 Jan	United
09 Dec - 14 Jan	United
10 Dec - 17 Jan	Spirit Airlines
04 Dec - 11 Jan	Delta
10 Dec - 14 Jan	Air Canada
11 Dec - 14 Jan	United
22 Dec - 18 Jan	Frontier Airlines
29 Dec - 11 Jan	Delta
15 Dec - 15 Jan	Frontier Airlines

Also check the deals for one-way flights from Austin 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 Austin to Seoul in December from $845

Return flights