A couple on a red-eye Delta flight was asked to leave the plane after they decided to put their young child in a seat they bought for their 18 year old son. Their teen son took an earlier flight so his little brother, a toddler, could ride in his in his car seat so he slept, rather than sit on his mother's lap. The couple said he rode to Hawaii in his car seat and they never had a problem. They were made to leave the plane on this return flight to California. Delta has since apologized and reimbursed the family their money.