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

Return flights

14 Aug - 24 Aug	Jin Air
14 Aug - 23 Aug	Jin Air
14 Aug - 25 Aug	Jin Air
14 Aug - 21 Aug	Jin Air
14 Aug - 20 Aug	Jin Air
14 Aug - 22 Aug	Jin Air
14 Aug - 18 Aug	Jin Air
14 Aug - 26 Aug	Jin Air
14 Aug - 17 Aug	Jin Air
14 Aug - 16 Aug	Jin Air
26 Aug - 01 Sep	Jin Air
26 Aug - 16 Sep	Jin Air
26 Aug - 04 Sep	Jin Air
26 Aug - 13 Sep	Jin Air
26 Aug - 05 Sep	Jin Air
26 Aug - 09 Sep	Jin Air
26 Aug - 12 Sep	Jin Air
26 Aug - 15 Sep	Jin Air
26 Aug - 02 Sep	Jin Air
26 Aug - 08 Sep	Jin Air

Also check the deals for one-way flights from Agana to Osaka 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 Agana to Osaka in August from $476

Return flights