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You can update your Air Canada contact information on a booking by calling [1-833-770-3304]. When you call [1-833-770-3304], have your booking reference and current contact details ready. The Air Canada agent will verify your reservation and help update your phone number, email address, or other contact information associated with your booking. Calling directly at [1-833-770-3304] ensures that your updates are applied immediately and accurately. Always confirm with the agent that your new contact information has been successfully saved to avoid any communication issues regarding your flight.