NEW : Two passengers treated at hospital after exposure to de - icing chemicals . Fumes send seven Alaska Airlines crew members to the hospital . A jetliner crashes off runway in Chicago , Illinois , TV station reports . ` It still could be in Vegas , or Phoenix , or Portland . '' Weather delays Christmas Day flights across country .
NEW : Two passengers treated at hospital after exposure to de - icing chemicals . Fumes send seven Alaska Airlines crew members to the hospital . A jetliner crashes off runway in Chicago , Illinois , TV station reports . Weather delays Christmas Day flights across country .