Roundtrip Flights from Ontario, CA (ONT) to Taipei, Taiwan (TPE) $656 (Travel Aug thru Nov, 2025)

Roundtrip Flights from Ontario, CA (ONT) to Taipei, Taiwan (TPE) $656 (Travel Aug thru Nov, 2025). Delta Air Lines and Expedia have round trip airfares travelling from Ontario CA (ONT) to Taipei Taiwan (TPE) for $656, making 1 stop for about 6 hours in Seattle both ways. These are economy basic fares that allow a personal item, a carry-on bag and 1 free checked bag. There is no seat selection and no change. In case you are wondering if China Airlines' nonstop fare is better or not, it is $798 for the same dates of travel. Travel Availability: Departs ONT: Aug 5, 12, 14, 18, 20, 26-28; Sept 1-4, 8-11, 15-18, 22-25, 29-30; Oct 1-2, 6-8, 13-16, 20-23, 27-30; Nov 3-6, 10-13, 17-20