OKLAHOMA CITY - The day before Thanksgiving is widely known as the busiest travel day of the year.
In fact, 43 million Americans will head out-of-town for the holiday.
Of those, 3 million will take to the skies.
However, the same storm that brought ice and snow to Oklahoma is now causing some travel problems on the East Coast and the ripple effect could impact fliers across the country.
Already, airports are crowded and travelers are rebooking flights.
In certain airports, Delta is offering full refunds for plane tickets if the flight has been canceled or significantly delayed.
Other carriers are letting travelers change their tickets for free.
Usually those fees range from $100 to $300.
However, experts say you should double-check the airlines' websites because it only applies at certain airports and covers specific dates.
If you have trouble rebooking, Farecompare.com recommends getting in line at the gate desk as soon as the flight is canceled.
At the same time, call the airline's customer service number and get help from whomever you reach first.
You can also use social media to tweet about what's happening; some airlines monitor Twitter and may respond quickly.