A powerful winter storm is impacting parts of the U.S. with major snowfall, ice, and below zero wind chills. The conditions are disrupting holiday travel and could last through next week.

More than a thousand flights were canceled or delayed across the Northeast and Great Lakes as a winter storm disrupted one of the busiest travel weekends of the year between Christmas and New Year’s

A winter storm on Friday night covered states like New York and New Jersey with several inches of snow. More than 4,000 flights across the U.S. were delayed on Saturday morning amid the winter weather.

Airlines are working to get their schedules back to normal following the winter storm that caused thousands of delays and cancellations and made a mess on the roads.

A winter storm packing a frosty ‌mix ​of snow and ice bore down ‌on the U.S. Northeast early on Saturday, disrupting post-holiday weekend airline traffic and ​prompting officials in New York and New Jersey to issue weather emergency declarations.

A winter storm dumped heavy snow and treacherous ice onto parts of the Great Lakes and Northeast Friday evening into Saturday morning, snarling travel and knocking out power in parts of the region.

More than 1,500 flights have been canceled so far on Friday, with New York City's three airports and the Philadelphia International Airport hit the hardest. New Jersey and New York are under state of emergencies.

Ice storm and winter storm warnings have been issued across the Northeast as a powerful snowstorm slams into the East Coast on Friday. Follow Newsweek live.