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

Return flights

01 Jun - 12 Jun	Alaska Airlines
17 Jun - 28 Jun	Alaska Airlines
17 Jun - 29 Jun	Hainan Airlines
26 Jun - 04 Jul	Alaska Airlines
26 Jun - 18 Jul	Alaska Airlines
13 Jun - 03 Jul	Sun Country Airlines
21 Jun - 04 Jul	Lufthansa
25 Jun - 02 Jul	jetBlue
10 Jun - 09 Jul	Turkish Airlines
01 Jun - 30 Jun	Cathay Pacific
27 Jun - 04 Jul	Alaska Airlines
24 Jun - 08 Jul	Turkish Airlines
26 Jun - 03 Jul	Alaska Airlines
17 Jun - 25 Jun	Alaska Airlines
14 Jun - 21 Jun	Cathay Pacific
01 Jun - 30 Jun	Korean Air	direct
10 Jun - 09 Jul	Korean Air	direct
11 Jun - 25 Jun	Delta	direct
17 Jun - 25 Jun	Delta	direct
01 Jun - 12 Jun	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 1115€

Return flights