Delta Air Lines (NYSE: NYSE:DAL) canceled around 400 flights from its mainline and Delta Connection services before noon on Wednesday. The airline has warned customers to expect more delays and cancellations as Wednesday's temperatures are not forecasted to rise above freezing.

You're entitled to a refund if your flight is canceled for any reason, but other accommodations depend on the cause of the delay.

Flight delays and cancellations continued at noon Wednesday as a result of winter weather hitting several states. Additionally, there have been extra long lines at the airport because so many TSA employee called out because of road conditions.