EVA Air charges a cancellation fee of \$50 for domestic flights and \$100 for international flights. A few exclusions apply to the Eva Air cancellation fee. However, you can cancel your ticket without any penalty within 24 hours of making your reservation. After the 24-hour period, you will be charged a cancellation fee if you cancel your ticket.
You can avoid the cancellation fee by changing your flight instead of canceling it. You can also avoid the cancellation fee by booking a refundable ticket. Refundable tickets are more expensive than non-refundable tickets, but they offer more flexibility in case you need to change your travel plans.