A Boeing spokeswoman declined to comment.
Delta is the only major U.S. carrier without a 737 MAX on order.
In September, Airline Weekly quoted Bastian as saying there was a place for the MAX at Delta if the carrier could figure out how to bring them in.
The MAX 10 competes with Airbus’ strongest-selling model, the A321neo. Both planes are aimed at the fast-growing segment of the market just above 200 seats.
“I think there is. We’ve been trying to get a deal done with Boeing. We’re keeping our eye on that, and hopefully, we’ll be able to figure that out,” Bastian said on Wednesday.
“We continue to see if there’s opportunities with the MAX but no decisions, no hold ups,” Bastian told Reuters.