Snow and ice hampered travel in parts of Texas as a winter storm closed Dallas Love Field and gave more students another day off.

Love Field, home to Southwest Airlines, closed early Friday. City of Dallas aviation spokesman Jose Luis Torres told The Associated Press that crews were working to clear snow from the runways.

About 120 flights were canceled Friday at Dallas-Fort Worth International Airport as a winter storm warning covered much of North Texas.

The University of Texas at Austin canceled classes Friday amid snowy conditions. Austin's public schools also closed.

Freezing temperatures reached Brownsville, where classes were canceled.

Schools in Houston, the state's largest district with more than 200,000 students, were closed, as were campuses in Corpus Christi, San Antonio, Dallas, Fort Worth, El Paso and Tyler.