Frontier Airlines is suspending service to four of the six cities it services from the New Castle County Airport.

Starting in December, the airline will take a break from providing service from Wilmington to Atlanta, Denver, Chicago and Fort Myers, Florida.

Frontier will increase service from Wilmington to Orlando and Tampa during the winter months.

Stephen Williams, airport director for the Delaware River and Bay Authority said the “seasonal cuts” are temporary and service to those cities will likely be restored in the spring.

“I’m very optimistic that Frontier Airlines is here to stay, that they like what they get in Wilmington and that they like the customer response,” he said. “We’ve moved hundreds of thousands of passengers through the airport. Most of the planes are 90 percent or more full.”

Williams said he doesn't expect travelers to be confused by the moves. He describes passengers are more leisurely travelers.  He said they are using Frontier out of New Castle County airport when looking for the best flight deal.

Frontier partnered with the New Castle County Airport just over a year ago, promising more low-cost service at small private airports across the U.S.

Last month, Frontier celebrated its 200,000th passenger at the New Castle Airport.