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

Return flights

30 Aug - 04 Sep	United	direct
30 Aug - 02 Sep	United	direct
29 Aug - 05 Sep	United	direct
31 Aug - 03 Sep	United	direct
29 Aug - 03 Sep	United	direct
22 Aug - 26 Aug	United	direct
23 Aug - 26 Aug	United	direct
25 Aug - 28 Aug	United	direct
23 Aug - 27 Aug	Jeju Air
19 Aug - 23 Aug	T'way Air
25 Aug - 31 Aug	United	direct
20 Aug - 23 Aug	Jeju Air
22 Aug - 27 Aug	Jeju Air
28 Aug - 03 Sep	Jeju Air
28 Aug - 03 Sep	United	direct
23 Aug - 29 Aug	Jeju Air
22 Aug - 24 Aug	Jeju Air
22 Aug - 04 Sep	Jin Air
22 Aug - 01 Sep	Jin Air
22 Aug - 03 Sep	Jin Air

Also check the deals for one-way flights from Tokyo 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 Tokyo to Agana in August from $299

Return flights