https://www.devex.com/people/how-to-book-a-lap-infant-in-economy-class-on-alaska-airlines-2361629
https://www.devex.com/people/how-to-add-an-infant-to-your-alaska-airlines-business-class-ticket-2361645
https://www.devex.com/people/can-i-add-a-lap-baby-to-my-delta-airlines-booking-over-the-phone-2360342
https://www.devex.com/people/does-delta-airlines-allow-last-minute-bookings-for-infants-2360522
https://www.devex.com/people/can-you-add-a-lap-baby-after-booking-a-flight-with-delta-airlines-2360603