Looks like D2 is going to be very busy.
Delta scheduled to resume flights to IAH Wednesday night.

A near normal schedule is anticipated for Thursday at Houston’s largest airport with flights arriving and departing from Delta’s hub in ATL, DTW, MSP and SLC.
"Our teams in Houston have worked tirelessly over the last several days, amid some very challenging circumstances, to make sure we were up and running as soon as possible for Delta customers,” said Michele CarsonVaughn, Delta’s Director – Airport Customer Service. “It’s been a herculean effort by our teams in Houston and elsewhere throughout the system to ensure we have the supplies, resources and people in place to ramp our operations back up and reestablish flights to Houston.”

"Delta will fly in a group of airport customer service agents, IT and corporate security personnel and aircraft maintenance technicians to Houston to relieve Delta’s Houston-based teams and ensure a smooth operational startup."

Delta resumes flights to Houston following devastating hurricane | Delta News Hub