Cheapest return flights from Seattle to Seoul in December from $873
AirHint found the following cheapest return flights from Seattle (SEA) to Seoul (GMP)
in December 2025 (see full year ).
Return flights
23 Dec
- 17 Jan
Japan Airlines
$ 873
09 Dec
- 21 Dec
Japan Airlines
$ 876
15 Dec
- 26 Dec
Japan Airlines
$ 884
02 Dec
- 20 Dec
Japan Airlines
$ 905
15 Dec
- 22 Dec
Japan Airlines
$ 905
15 Dec
- 23 Dec
Japan Airlines
$ 905
23 Dec
- 14 Jan
Japan Airlines
$ 905
09 Dec
- 14 Jan
Japan Airlines
$ 905
08 Dec
- 06 Jan
Japan Airlines
$ 910
09 Dec
- 06 Jan
Japan Airlines
$ 912
14 Dec
- 26 Dec
Japan Airlines
$ 913
16 Dec
- 14 Jan
Japan Airlines
$ 913
07 Dec
- 21 Dec
Japan Airlines
$ 916
29 Dec
- 15 Jan
Japan Airlines
$ 924
11 Dec
- 17 Dec
Alaska Airlines
$ 951
22 Dec
- 14 Jan
Alaska Airlines
$ 951
30 Dec
- 15 Jan
Japan Airlines
$ 1084
15 Dec
- 27 Dec
Japan Airlines
$ 1109
11 Dec
- 14 Dec
Japan Airlines
$ 1117
29 Dec
- 16 Jan
Japan Airlines
$ 1117
Also check the deals for one-way flights from Seattle to Seoul in December .
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