Absolutely, you can cancel your EVA Air flight and obtain a refund, contingent on fare regulations. For personalized assistance, please reach out to EVA Air customer service at +1-844-640-0543.
Source: https://community.expensify.com/discussion/32515/evaair-can-i-cancel-my-eva-air-flight-and-get-a-refund-best-refund-rating-aiirline/p1?new=1