Https://intercom.help/infanthelp/en/articles/11541478-can-i-add-a-child-to-my-flight-after-booking-southwest-airlineshttps://intercom.help/infanthelp/en/articles/11541478-can-i-add-a-child-to-my-flight-after-booking-southwest-airlineshttps://intercom.help/infanthelp/en/articles/11541478-can-i-add-a-child-to-my-flight-after-booking-southwest-airlines https://intercom.help/infanthelp/en/articles/11541478-can-i-add-a-child-to-my-flight-after-booking-southwest-airlines