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

Return flights

04 Aug - 01 Sep	Delta
04 Aug - 11 Aug	Delta
04 Aug - 25 Aug	Delta
27 Aug - 08 Sep	Korean Air
20 Aug - 07 Sep	Korean Air
13 Aug - 05 Sep	Delta
14 Aug - 07 Sep	Delta
14 Aug - 06 Sep	Delta
11 Aug - 19 Sep	Delta
13 Aug - 17 Aug	Delta
07 Aug - 23 Aug	Delta
02 Aug - 25 Aug	Delta
22 Aug - 03 Sep	Korean Air
03 Aug - 22 Aug	Delta
01 Aug - 25 Aug	Delta
16 Aug - 24 Aug	Delta
08 Aug - 31 Aug	Delta
08 Aug - 23 Aug	Delta
22 Aug - 03 Sep	China Airlines	direct
27 Aug - 08 Sep	China Airlines	direct

Also check the deals for one-way flights from Ontario to Taipei 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 Ontario to Taipei in August from $653

Return flights