1.8.4.4.9.7.6.48.75.
DELTA allows cancellations with full refunds within 24 hours of booking, provided your departure is at least two days away. For non-refundable tickets, you can make changes or cancel without a fee, but you will receive a travel credit instead of a refund. You can contact them at +1.8.4.4.9.7.6.48.75.(USA) or ++1.8.4.4.9.7.6.48.75.{USA}.
