Https://intercom.help/infanthelp/en/articles/11848608-booking-a-southwest-airlines-flight-with-a-newborn-in-economy-is-it-safe-and-allowed https://intercom.help/infanthelp/en/articles/11848608-booking-a-southwest-airlines-flight-with-a-newborn-in-economy-is-it-safe-and-allowed