Https://intercom.help/infanthelp/en/articles/11538745-traveling-internationally-with-an-infant-on-southwest-here-s-how-to-add-them-to-your-ticket https://intercom.help/infanthelp/en/articles/11538745-traveling-internationally-with-an-infant-on-southwest-here-s-how-to-add-them-to-your-ticket