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

Return flights

22 Jan - 29 Jan	Korean Air
01 Jan - 07 Jan	Korean Air
23 Jan - 25 Jan	Air Busan
25 Jan - 28 Jan	Korean Air
20 Jan - 23 Jan	Korean Air
01 Jan - 08 Jan	Korean Air
25 Jan - 29 Jan	Korean Air
27 Jan - 03 Feb	Korean Air
16 Jan - 19 Jan	Air Busan
20 Jan - 29 Jan	Korean Air
21 Jan - 28 Jan	Korean Air
31 Jan - 03 Feb	Korean Air
31 Jan - 04 Feb	Korean Air
28 Jan - 06 Feb	Korean Air
28 Jan - 05 Feb	Korean Air
30 Jan - 03 Feb	Korean Air
30 Jan - 06 Feb	Korean Air
28 Jan - 04 Feb	Korean Air
29 Jan - 03 Feb	Korean Air
29 Jan - 02 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 357€

Return flights