Delta has waived off the flight change charges for all flights departing in March and till September 30, 2020. This waiver is also applicable for all tickets booked between March 1 and May 31, 2020.
If changes to flights or tickets are done during the “24 hours Risk Free period”, there is no charge for the tickets and just the fare difference is to be paid.
After this “24-hour Risk Free Period” changes to Base Economy Fare tickets are not permitted. For non-refundable tickets on other classes, change invites charges of $200-500 and the fare difference is to be paid as well. For refundable tickets, there is no charge and only fare difference is to be paid.
If flight or ticket change is to be done within 24 hours of flight departure time, it is not allowed in Basic Economy ticket but can be done for refundable and non-refundable tickets on other classes on condition that seats are available and by paying charges starting from $75.