Motorists in Dallas are dealing with wintry conditions.
Credit: KTVT
(CNN)
Nearly 1,000 flights were canceled in the United States Monday as winter weather spreads across the center of the country.
Most of the cancellations so far affect Dallas Love Field and Dallas-Fort Worth International airports in Texas.
As of 4:30 pm Miami time, approximately 990 flights within, to or from the US have been canceled Monday, according to flight-tracking site FlightAware, while more than 3,600 have been delayed.
More than 40 million people are under winter weather advisories from Texas to West Virginia, with significant icing likely
About half of all cancellations are for Southwest Airlines flights.
The Dallas-based airline, which suffered a collapse in operations over the holiday season, canceled about 12% of its scheduled flights on Monday, some 480, according to FlightAware.
Southwest Airlines did not immediately respond to a request for comment.
On Monday morning, CEO Bob Jordan detailed solutions to prevent a repeat of the airline's collapse over the holiday season.
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In contrast, Texas-based American Airlines canceled 6% of its scheduled flights on Monday.
American had suspended about 200 US flights as of 4:30 pm Miami time on Monday.
The regional airline SkyWest had canceled around 140 flights on Monday afternoon.
Cancellations have already started piling up for Tuesday flights.
In addition to the canceled flights in Dallas on Monday and Tuesday, about 200 Monday flights to and from Denver International Airport in Colorado were also grounded.
More than 100 flights in and out of Austin, Texas, scheduled for Tuesday had already been canceled by Monday afternoon.
A winter storm warning is in effect for much of Texas, including the Dallas-Fort Worth area, until 6 a.m. local time Wednesday.
Exemptions for travelers due to bad weather
Southwest Airlines issued a winter weather waiver and extended it Monday to dozens of airports in Texas, Oklahoma, Tennessee, Arkansas and Kentucky.
The latest waivers cover travel from January 30 to February 1.
For its part, American Airlines issued this Sunday an exemption for the Dallas-Fort Worth International Airport (DWF) that applies to travel from January 30 to February 2.
Dallas Love Field tweeted Monday that its team "stands ready to treat and clean surfaces to allow for safe operations."
DFW is also preparing for bad weather.
The two airports urged travelers to check with their airlines about the status of their flights before going to the air terminals.
Dangerous Driving Conditions
The weather will also make the conditions on the roads treacherous.
As much as 0.5 inches of ice or sleet is expected in some parts of Texas, the National Weather Service warns.
Ice buildup is expected in at least 15 states, the National Weather Service's Weather Prediction Center said.
"If you must travel, slow down and exercise caution, especially when approaching bridges and overpasses," the Texas warning reads.
Drivers are advised to carry a flashlight, food and water in their vehicles in case of an emergency.
Here you will find more information on what to wear for winter driving.
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