Cheapest return flights from Boston to Seoul in December from $1337

Best time to book flights for Boston (BOS) to Seoul (ICN) flights at AirHint

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

Return flights

10 Dec - 26 Jan jetBlue
15 Dec - 26 Dec Air Canada
23 Dec - 11 Jan Finnair
23 Dec - 27 Jan Porter Airlines (Canada) Ltd
10 Dec - 26 Jan Korean Air direct
17 Dec - 05 Jan Lufthansa
17 Dec - 18 Jan Lufthansa
20 Dec - 27 Dec Air France
15 Dec - 26 Dec Korean Air direct
20 Dec - 11 Jan Air France
20 Dec - 10 Jan Delta
20 Dec - 10 Jan Korean Air direct
20 Dec - 11 Jan Korean Air direct
20 Dec - 27 Dec 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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