. >> reporter: in los angeles airport ceo justin erbacci says omicron is not scaring away passengers. >> well, i think a huge difference is the amount of people who are vaccinated and boosted. people are much more comfortable traveling. >> reporter: another 100 million will be hitting the road over the next week and a half, approaching prepandemic levels. and that's with the cost of gasoline up more than a dollar over last year. >> the gas price haven't affected my decision to travel. but i definitely felt the impact of them. >> reporter: a december dip in prices is providing some help for drivers, but the weather is not. on icy i-94 in northwest wisconsin overnight, a fiery 100-vehicle pile-up left more than a dozen injured. and out west, an atmospheric river of rain is causing flooding and dumping snow in the sierra nevada, just in time for christmas. but it's not just storm clouds hanging over the holidays. >> you do what the doctors tell you to do, you should be all right. >> reporter: at l.a.x., tr travelers can test at the airport. some even getting a booster before they board.

justin erbacci says omicron is not scaring away passengers. >> i think a huge difference is the amount vaccinated, and boosted. people are much more comfortable traveling. >> reporter: another 100 million will be hitting the road over the next week and a half, approaching pre-pandemic levels. and that's with the cost of gasoline up more than $1 over last year. >> the gas prices haven't affected my decision to travel, but i've definitely felt the impact of them. >> reporter: a december dip in prices is providing some help for drivers, but the weather is not. on icy i-94, in northwest wisconsin overnight, a fiery 100-vehicle pileup left more than a dozen injured. and out west, an at moss fearing and out west, an atmospheric river of rain is causing flooding and dumping snow in the sierra nevada, just in time for christmas. but it's not just storm clouds hanging over the holiday. >> you do what they tell you to do, you should be all right. >> reporter: at l.a.x., travelers tested the airport, some getting a booster before they board. >> make sure you're good to go and safety for everybody