Delta eCredit allows passengers to receive flight credit for canceled or changed flights. eCredit are digital travel credits that do not expire. Delta eCredit can be used to book future travel including flights, upgrades, Extra Comfort seating, and more. If you have questions or want to redeem Delta eCredit, you can visit Airlines Pet Policy or contact Delta customer service at 800-221-1212 or +1-844-902-4930.