"They're asking for more than the company has indicated we would be able to afford," said Watts, who without disclosing specifics said the company's offer to 1,600 Delta Connection pilots "is based on our desire to reach an agreement and keep us competitive in the regional industry."

The union also is seeking changes in work rules that can leave Delta Connection pilots grounded far from home, waiting for a new assignment. Bernskoetter said it wasn't unusual for pilots to be grounded between flights for up to 36 hours, earning standby pay of $1.50 an hour.

"We're sitting on our butt in a hotel somewhere," Bernskoetter said. "When I come to an airport, I want to fly. We're saying, 'Use the crews more efficiently."'

Bernskoetter said the union was negotiating with Atlantic Southeast Airlines, "but they get their marching orders from SkyWest."

SkyWest officials referred The Associated Press on Friday to Atlantic Southeast Airlines.

SkyWest also operates United Express flights under contract with United Airlines.