Run the following:
lftp -c "open -u {USERNAME}, {PASSWORD} {HOSTNAME}; put -O {DIRECTORY-TO-DATA-TO-REMOTELY} {FILE-TO-MOVE}"
For example:
lftp -c "open -u john.doe, password ftp.google.com; put -O /remote-backups/ /local-backups/file_2_upload.zip"