Cheapest return flights from Boston to Seoul in December from 1113€

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

Return flights

10 Dec - 21 Jan Cathay Pacific
11 Dec - 21 Jan Turkish Airlines
10 Dec - 26 Dec United
15 Dec - 21 Jan Lufthansa
16 Dec - 23 Dec Air Canada
15 Dec - 21 Jan Delta direct
11 Dec - 21 Jan Delta direct
19 Dec - 16 Jan jetBlue
17 Dec - 03 Jan KLM
17 Dec - 04 Jan KLM
18 Dec - 02 Jan Cathay Pacific
17 Dec - 03 Jan Korean Air direct

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

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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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