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

Return flights

06 Apr - 13 Apr	Korean Air	direct
05 Apr - 10 Apr	Korean Air	direct
06 Apr - 14 Apr	Korean Air	direct
06 Apr - 10 Apr	Korean Air	direct
10 Apr - 14 Apr	Korean Air	direct
18 Apr - 23 Apr	Korean Air	direct
04 Apr - 07 Apr	Korean Air	direct
11 Apr - 14 Apr	Korean Air	direct
18 Apr - 21 Apr	Korean Air	direct
23 Apr - 25 Apr	Korean Air	direct
25 Apr - 02 May	Korean Air	direct

Also check the deals for one-way flights from Seoul to Agana in April.

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 April from 267€

Return flights