The food vendor at Charleston International Airport has notified its 63 employees under the WARN Act their jobs will be eliminated May 31.

SSP America Inc. of Lansdowne, Va., has held the food service contract at the airport since 2008, but it did not submit a bid last year for a new term of service.

Charleston County Aviation Authority, which oversees the airport, in December awarded the 10-year contract to Buffalo, N.Y.-based Delaware North Companies, which plans to bring in a new slew of vendors.

The federal Worker Adjustment and Retraining Notification Act, or WARN Act, requires companies with 100 or more employees to give them 60 days notice of their layoff.

SSP America operates Dunkin Donuts, Lowcountry Grill and Magnolia Bar & Grill on the pre-security side of the airport. Post-security near the airport gates are Great American Bagel, Cafe Fresca, Runway Bar and two Samuel Adams locations.

Those locations will be replaced with $6.5 million in improvements by Delaware North in addition to the $189 million the Aviation Authority is spending to expand and renovate the 29-year-old terminal.

Among the national and Lowcountry brands coming to the airport via Delaware North are Caviar & Bananas, Wendy's, Charleston Beer Works and DeSano Pizza Bakery and Bar. Also on the way are Harvest and Grounds Bakery & Coffee and Jack Nicklaus Golden Bear Grill.

"SSP is working with Delaware North to make the transition around May 24," airport spokeswoman Becky Beaman said. "We will not be without food service."

Delaware North will host a job fair the first week of May for SSP America's current employees who want to apply with Delaware North, said Steve Bass, Delaware North regional manager. The company will host a second job fair that same week for people in the Charleston community who want to work in concessions at the airport, Bass said.

The retail vendor contract did not change. Hudson Group of New Jersey, a subsidiary of Swiss company Dufry AG, retained the retail concession contract for another 10 years.

Reach Warren L. Wise at 937-5524 or twitter.com/warrenlancewise.