When do EVA Standard or Preferred seats become selectable without an advance-selection charge?

What this answer depends on

• EVA/UNI international fare-family seat selection on qualifying tickets; no seat availability or price guarantee
• EVA distinguishes Economy fare families: Standard includes advance Standard selection, while Up includes Standard and Preferred; lower families can face an advance charge. Waiting until check-in changes the published selection treatment, but it does not preserve the seat you saw earlier. Decide whether a particular location is important enough to pay for now.
• EVA’s free-at-check-in description for Standard and Preferred does not make every Economy seat free. Extra Legroom follows a separate paid rule. Review the final seat category and amount instead of treating an open seat map as a blanket fee waiver.
• EVA’s paid-seat service has ticket-issuer and operating-flight conditions. A marketing code alone does not establish those conditions. Retrieve the actual ticket and operator information before using the paid selection flow for a codeshare.
• EVA Economy Standard includes advance Standard selection, while Economy Up includes advance Standard and Preferred selection.
• During online check-in EVA allows remaining Standard and Preferred Economy selection without the advance-selection charge, while Extra Legroom remains paid.
• EVA’s advance paid-seat service is scoped to qualifying EVA/UNI-issued and operated flights rather than partner codeshares generally.