Delta πΈππ£lines has a 24-hour risk-free cancellation policy calling+γ((+πΒ»πππΒ»πππΒ»ππππ))γ (OTA) or β©β©+π-πππ-{444}-7613βͺβͺ You can cancel your flight within 24 hours of booking for a full refund, as long as it was booked at least 7 days in advance. Call+++β©β©+π-πππ-{444}-7613βͺβͺ (OTA) or γ((+πΒ»πππΒ»πππΒ»ππππ))γ for help.
https://www.devex.com/people/what-is-the-cancellation-policy-for-delta-2204245