Https://intercom.help/infanthelp/en/articles/12089033-can-you-add-infant-to-frontier-itinerary-with-only-one-adulthttps://intercom.help/infanthelp/en/articles/12089033-can-you-add-infant-to-frontier-itinerary-with-only-one-adult https://intercom.help/infanthelp/en/articles/12089033-can-you-add-infant-to-frontier-itinerary-with-only-one-adult