AirHint found the following cheapest return flights from Osaka (ITM) to Agana (GUM) in August 2025 (see full year).

Return flights

25 Aug - 31 Aug	Ibex Airlines
28 Aug - 03 Sep	ANA
26 Aug - 31 Aug	Japan Airlines
30 Aug - 31 Aug	Japan Airlines
31 Aug - 07 Sep	Japan Airlines
19 Aug - 26 Aug	Japan Airlines
22 Aug - 24 Aug	ANA
31 Aug - 02 Sep	ANA
25 Aug - 29 Aug	Japan Airlines
23 Aug - 24 Aug	ANA
19 Aug - 22 Aug	Japan Airlines
20 Aug - 27 Aug	Japan Airlines
16 Aug - 18 Aug	Japan Airlines
30 Aug - 01 Sep	ANA

Also check the deals for one-way flights from Osaka to Agana in August.

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 Osaka to Agana in August from 470€

Return flights