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

Return flights

30 Aug - 05 Sep	Jin Air
30 Aug - 03 Sep	Jin Air
27 Aug - 03 Sep	Tigerair Taiwan
27 Aug - 30 Aug	Philippine Airlines
28 Aug - 02 Sep	T'way Air
30 Aug - 02 Sep	Jin Air
29 Aug - 19 Sep	Jin Air
18 Aug - 26 Aug	Philippine Airlines
20 Aug - 27 Aug	Philippine Airlines
26 Aug - 30 Aug	Korean Air
28 Aug - 31 Aug	Korean Air
25 Aug - 29 Aug	Korean Air
27 Aug - 29 Aug	Korean Air
24 Aug - 31 Aug	Korean Air
30 Aug - 01 Sep	Korean Air
29 Aug - 02 Sep	Korean Air
22 Aug - 26 Aug	Philippine Airlines
26 Aug - 31 Aug	Philippine Airlines
26 Aug - 13 Sep	Jin Air
26 Aug - 05 Sep	Jin Air

Also check the deals for one-way flights from Taipei 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 Taipei to Agana in August from $378

Return flights