Cheapest one-way flights from Boston to Seoul in January from $455

AirHint found the following cheapest one-way flights from Boston (BOS) to Seoul (ICN) in January 2026 (see full year).

One-Way flights

24 Jan Spirit Airlines
18 Jan Hainan Airlines
17 Jan Spirit Airlines
14 Jan Cathay Pacific
26 Jan Cathay Pacific
26 Jan Delta direct
17 Jan Korean Air direct
18 Jan Korean Air direct
24 Jan Korean Air direct
14 Jan Korean Air direct

Also check the deals for return flights from Boston to Seoul in January.

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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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