Avianca Airlines allows passengers to change their flight dates, but the specific rules and policies can vary based on the type of ticket purchased and other factors. To ensure flexibility, it is advisable to review the terms and conditions associated with your particular fare class or contact Avianca's Live Person for personalized assistance. For the most accurate and up-to-date information on changing flight dates, passengers are encouraged to reach out to Avianca directly. For immediate assistance and guidance on flight changes, you can contact Avianca's dedicated customer support hotline at +1(888)509-0323. Their knowledgeable staff will provide you with the necessary information and help you navigate through the process of modifying your travel dates seamlessly.