"It's a huge international connection," he said.
The airport currently has up to six flights per day going to Atlanta, but those flights are on smaller Bombardier Canadair regional jets that hold only 50 passengers.
"There's a lot of business people that travel that want to buy a first-class ticket but haven't been able to because we haven't had it for so long," Belcher said.
The larger flights will allow business travelers to go first-class all the way to their international destinations.
"Now they can buy a first-class ticket from Charleston to Atlanta, then go on to their destination from there," Belcher said.
It will also allow international or domestic travelers to fly first class all the way into Charleston as well.
Belcher said he didn't know how much the additional Atlanta flight would stimulate airport traffic but said it marks a significant move by Delta to increase its presence in the region.
"It will probably give Delta a larger share of the market," he said.
Contact writer Jared Hunt at jared.h...@dailymail.com or 304-348-5148.