• Visit LATAM Airlines' official website or contact their customer service to understand their flight change policy. Policies can vary based on the type of ticket you purchased, the fare conditions, and other factors.

• Check Eligibility: Make sure your ticket is eligible for changes. Some cheaper fare classes may have more restrictions and could be non-changeable or require a fee to make changes.

• Contact Customer Service: Reach out to LATAM Airlines' customer service through their official website or the contact number provided on your ticket or booking confirmation. You can also visit the nearest LATAM Airlines ticket office or airport counter for assistance.

• Be Prepared with Information: When contacting customer service, have your booking reference number, passenger names, and the flight details ready. Explain the reason for the change and let them know your preferred new travel dates.

• Check for Available Options:  LATAM change Flight Airlines will search for available options based on your request, fare rules, and seat availability. They might offer you alternative flights for your desired dates or provide information about applicable fees.

• Pay Applicable Fees: If your ticket is eligible for changes, you may still be required to pay a change fee and the fare difference between your original ticket and the new flight. The exact amount will depend on the fare rules and availability.

• Confirm the Changes: Once you've agreed to the changes and paid any applicable fees, make sure to get a confirmation email with the updated itinerary.

• Check for Updates: Before your new travel date, check your reservation periodically to ensure there are no further changes or issues with your booking.

Remember that the process and fees for flight changes can differ based on factors such as the airline's policy, the type of ticket you purchased, and the reason for the change. It's always best to contact the airline directly to get personalised assistance and accurate information for your specific situation.

As of my last update in September 2021, Air Canada offered travel vouchers as a form of compensation or refund for certain situations, such as flight cancellations, schedule changes, or voluntary flight changes. However, please note that policies and offerings may have changed since then, so it's essential to verify the current information on Air Canada's official website or by contacting their customer service directly.