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

Return flights

28 Sep - 02 Oct	T'way Air	direct
29 Sep - 30 Sep	T'way Air	direct
26 Sep - 30 Sep	United	direct
24 Sep - 26 Sep	United	direct
27 Sep - 30 Sep	T'way Air	direct
21 Sep - 23 Sep	United	direct
25 Sep - 28 Sep	T'way Air	direct
22 Sep - 26 Sep	United	direct
25 Sep - 27 Sep	United	direct
22 Sep - 25 Sep	United	direct
21 Sep - 24 Sep	United	direct
29 Sep - 01 Oct	United	direct
27 Sep - 01 Oct	United	direct
26 Sep - 03 Oct	United	direct
30 Sep - 05 Oct	United	direct

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

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 September from $240

Return flights