AirHint found the following cheapest return flights from Boston (BOS) to Seoul (ICN) in June 2026 (see full year).

Return flights

01 Jun - 16 Jun	Cathay Pacific
08 Jun - 30 Jun	Cathay Pacific
23 Jun - 30 Jun	Cathay Pacific
17 Jun - 25 Jun	Turkish Airlines
17 Jun - 29 Jun	Cathay Pacific
09 Jun - 19 Jun	Cathay Pacific
26 Jun - 18 Jul	Cathay Pacific
18 Jun - 02 Jul	Turkish Airlines
01 Jun - 16 Jun	Delta	direct
08 Jun - 30 Jun	Delta	direct
17 Jun - 25 Jun	Delta	direct
17 Jun - 29 Jun	Delta	direct
18 Jun - 02 Jul	Delta	direct
26 Jun - 18 Jul	Delta	direct

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

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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Cheapest return flights from Boston to Seoul in June from 1259€

Return flights