If you haven’t started your Thanksgiving trip, you’re not alone. The busiest days are still to come WSOC TV [Video]

The late crush of holiday travelers is picking up steam, with about 2.7 million people expected to board flights on Wednesday and millions more planning to drive to Thanksgiving celebrations.

Airline officials say they are confident that they can avoid the kind of massive disruptions that have marred past holiday seasons, such as the meltdown at Southwest Airlines over last Christmas.

Airlines have added tens of thousands of employees in the last couple years, and Southwest says it has bought more winter equipment to keep planes moving even during sub-freezing temperatures.

Security lines at airports could be long because of the crowds. Delta Air Lines is telling passengers to arrive at the airport at least two hours before their flight if they are traveling within the United States, three hours early if they’re flying overseas — and maybe earlier on Sunday and Monday.

The holiday will also test the Federal …