Report: Delta expecting millions in new ObamaCare costs

The provision allowing children to stay on their parents' healthcare plans has added $14 million in healthcare costs, the letter states, and the company anticipates spending another $14 million as more employees sign up for insurance in order to comply with the law's individual mandate.

A new fee to help fund new insurance exchanges will cost the company another $10 million, Delta said in its letter.

The company said it does not plan to cut workers' hours to avoid providing healthcare coverage, and that its healthcare plan already meets the law's coverage requirements. 

The airline expressed concern, however, over the law's tax on especially generous healthcare plans, saying it might have to scale back benefits before the tax takes effect.