To change your Air New Zealand flight booking, visit the airline’s official website or contact their customer service at 1-818-878-8939. Navigate to the “Manage Booking” section online, where you can modify dates, times, or passenger details. Ensure you have your booking reference and personal information handy. Keep in mind that change fees and fare differences may apply. For immediate assistance, call Air New Zealand’s customer support for personalized guidance. Always review the airline’s policy on Change Air New Zealand Flight booking online and cancellations for a smooth process.