Severe winter conditions across the northern parts of the U.S. wrecked travelers plans Monday.
Some 4,072 flights within, into or out of the U.S. were canceled today, according to flight tracking service FlightAware.
Chicago O'Hare International airport reported the maximum number of cancellations with 825 flights scrapped Monday.
Cleveland-Hopkins, LaGuardia, Indianapolis, Chicago Midway, Boston Logan and JFK airports reported over 100 cancelations each Monday.
United, JetBlue, American, Southwest, Delta, ExpressJet and American Eagle each reported several hundred cancelations.
Another 7,532 flights suffered delays in the U.S.
Flight delays and cancelations are cascading and affecting airports far from the coldest spots.
More CancelLations TueSday
Things don't look good for travelers Tuesday (January 7, 2014) either.
As of 11:00PM ET Monday, 1,550 flights stood canceled for Tuesday in the U.S.
With record low temperatures being expected in several states Tuesday, it's safe to assume flight cancelations and delays will run into several thousands.
Most airlines waive change and cancelation fees. Check with your airline for details.
Besides bracing themselves for more cancelations Tuesday, travelers should not venture out unless it's extremely important.
If you must head out, make sure you're bundled up in multiple layers of warm clothing.