https://central.xero.com/s/question/0D58V00009MmJKYSA3/call-now1888...
Delta 𝔸𝕚𝕣𝕝𝕚𝕟𝕖𝕤 offers a 24-hour 𝕔𝕒𝕟𝕔𝕖𝕝𝕝𝕒𝕥𝕚𝕠𝕟 policy, allowing you to cancel your 𝕗𝕝𝕚𝕘𝕙𝕥 within 24 hours of booking without incurring any fees♠1⋮⋮888 (829⋮⋮⋮1467)🥇[DL-Official], provided that the reservation was made at least 7 days before the departure date.