Hurricane Dolly was doing its best to disrupt flight plans for many. Southwest Airlines and Houston-based Continental announced changes to its Wednesday flights in advance of the storm coming ashore.

Southwest said it was canceling all of its scheduled flights to and from Corpus Christi and Harlingen due to the storm. There are no plans to cancel or disrupt flights on Thursday or Friday, but the company said customers should check its Web site for updated information.

Continental said it expects air travel throughout South Texas and parts of Mexico to be difficult. The airline was already bracing for likely cancellations and flight delays through Friday.

The airline said that customers who are ticketed for travel through Friday to and from the airports that are expected to be affected by Hurricane Dolly, will be allowed a one-time date or time change to their flights without the normal penalty as long the flight is rescheduled by Aug. 1.

If a flight is canceled, Continental will refund the price of the ticket.

The carrier also said the best way to make changes and track flight changes and cancellations is to go to its Web site. Passengers may also call (800) 525-0280.