Taoyuan International Airport to Ontario International Airport Flights from HKD 284 incl. tax

Based on HopeGoo data, STARLUX Airlines offers one-way fares as low as US$399 on Cheapest nonstop routes (e.g. TPE to ONT on Thu, Apr 16), while STARLUX Airlines offers Cheapest nonstop round-trips from US$655 departing on Sat, Apr 18 and returning on Thu, Apr 23.

By analyzing data from all airlines on the HopeGoo flight calendar, it looks like the best time to book a flight from Taipei to Ontario is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

To find best deals on flights from Taipei to Ontario, you can use various tools on HopeGoo: · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, Apr 16, with one-way flights priced at just US$399. · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is China Airlines. · Set up price alerts to easily monitor ticket prices without having to check every day. · Check HopeGoo flight deals and promo codes frequently. · Avoid peak season unless you book very early. It seems the peak season for Ontario travel is around March. · Get exclusive promo codes for HopeGoo app users.

The cheapest months to fly from Taipei to Ontario is March, when demand for travel is lower.

After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Taipei to Ontario on February 27, 2026 with China Airlines, with prices starting at US$757.

The time difference between Ontario and Taipei is 16h.

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