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

Return flights

20 Jan - 22 Jan	T'way Air
26 Jan - 16 Feb	Air Busan
22 Jan - 29 Jan	T'way Air
25 Jan - 30 Jan	Eastar Jet
29 Jan - 02 Feb	Air Busan
21 Jan - 24 Jan	Korean Air
30 Jan - 06 Feb	Korean Air
30 Jan - 09 Feb	Korean Air
19 Jan - 26 Jan	Korean Air
19 Jan - 30 Jan	Korean Air
20 Jan - 30 Jan	Korean Air
25 Jan - 28 Jan	Korean Air
26 Jan - 31 Jan	Korean Air
28 Jan - 30 Jan	Korean Air
29 Jan - 01 Feb	Korean Air
25 Jan - 01 Feb	Korean Air
30 Jan - 01 Feb	Korean Air
27 Jan - 02 Feb	Korean Air
26 Jan - 02 Feb	Korean Air
31 Jan - 06 Feb	Korean Air

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

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 January from 234€

Return flights