Comair put some of its passenger planes back into the air Sunday after canceling all 1,100 flights systemwide a day earlier because of computer troubles.

The airline, a unit of Delta Air Lines, hoped to be operating a full schedule by the end of the week, a spokesman said.

A Bangor International Airport employee said Sunday that traffic there appeared to be getting back on track.

Comair has daily flights between Bangor and the Delta hub at Cincinnati-Northern Kentucky International Airport. Comair also flies into Portland.

BIA’s own Web site reported Sunday that at least one Comair flight, from Cincinnati, was scheduled to land at 2:38 p.m. and was running on time.

“The situation is still pretty fluid. Our goal is to operate as many flights as possible,” said Nick Miller, a spokesman for Comair.

The carrier’s computer system, which manages flight assignments, was disrupted Friday night after it was overwhelmed by cancellations and delays caused by a winter storm that socked the Ohio River Valley. The computer shutdown forced the airline to cancel all of its Dec. 25 flights.

Comair carries 30,000 customers to 118 cities on a typical day. Passenger numbers increase slightly during the holidays, but Miller said he did not know exactly how many people were affected by the cancellations.

He said technicians were continuing to repair the computer system.

“Obviously, we’re working to get as much of the schedule back up and running in the subsequent days so we can hopefully resume our full schedule no later than the end of the week, sooner if possible,” Miller said.