last year. how can people travel safely? what do you do if you want to change your plans? >> reporter: the rush home for the holidays is kicking into high gear. triple-a predicts more than 100 million people will take to the roads, sky, and other form of transportation over the christmas holiday. that is up more than 30% from last year. >> we are very excited to have the whole family back together again. >> reporter: airports bustling with 2 million passengers sunday but will the quickly spreading pt last-minute changes? >> i am very concerned because the flights are full. the lobby is full. the planes are full. >> reporter: he says as omicron cases go up, bookings go down. >> you can see in the numbers that the comfort and level of confidence in traveling is dropping but not as steep as we've seen in 2020. >> reporter: the surge of cases scrambling a swath of americans' christmas time