The winter blast sweeping the nation is causing havoc for air travelers.

The weather is having a ripple affect here in Houston. Airlines have cancelled dozens of flights at both Hobby Airport and Bush Intercontinental.

All flights to Dallas were cancelled Friday morning out of Hobby.

Airlines suggest you check the status of your flight before leaving for the airport.

Many arrivals have been cancelled as well because of the winter weather. Airlines also suggest checking the status of the arrivals if you are picking up someone.