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

Return flights

25 Jun - 29 Jun	Korean Air	direct
24 Jun - 29 Jun	Korean Air	direct
18 Jun - 25 Jun	Korean Air	direct
07 Jun - 10 Jun	Korean Air	direct
11 Jun - 18 Jun	Korean Air	direct
16 Jun - 26 Jun	Korean Air	direct
24 Jun - 28 Jun	Korean Air	direct
24 Jun - 27 Jun	Korean Air	direct
12 Jun - 14 Jun	Korean Air	direct
05 Jun - 10 Jun	Korean Air	direct
24 Jun - 04 Jul	Korean Air	direct
26 Jun - 04 Jul	Korean Air	direct

Also check the deals for one-way flights from Seoul to Agana 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 Seoul to Agana in June from 272€

Return flights