delta ecredit to upgrade seat

Passengers,Delta Allow you to use a delta ecredit to upgrade my seat. but it depends on the specific terms of your eCredit. To use a delta ecredit to upgrade my seat ,visit Delta website or app, log in to "My Trips," and apply your eCredit during the payment process.For more info about Can I use a delta ecredit to upgrade my seat? go through the official website, airline representative or through the Airline app, where you can upgrade your seats.