Cheapest return flights from Boston to Seoul in December from $924

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

Return flights

01 Dec - 08 Dec Air Canada
04 Dec - 16 Dec Air Canada
29 Dec - 24 Jan Air Canada
12 Dec - 17 Jan Air Canada
10 Dec - 10 Jan Air Canada
11 Dec - 11 Jan Air Canada
17 Dec - 13 Jan Air Canada
14 Dec - 14 Jan Air Canada
15 Dec - 11 Jan Finnair
11 Dec - 17 Jan Air Canada
21 Dec - 24 Jan Air Canada
17 Dec - 11 Jan Finnair
04 Dec - 16 Dec Delta direct
01 Dec - 08 Dec Delta direct

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

Skyscanner

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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