thanksgiving on the busiest day of the year. >> reporter: it's been a day of congested highways, crowded airports, and full train stations as millions make their way to thanksgiving destinations. >> we left early to beat the traffic. >> it's just a parking garage at this point. >> reporter: most are driving, with more than 48 million hitting the roads. and tonight, finding gas prices averaging $3.39 per gallon, the highest thanksgiving holiday price in nine years. >> that's too much money. that's too much. the gas is high. >> reporter: with covid lockdowns in the rearview mirror and the national vaccination rate nearly 60%, many feel confident about flying this thanksgiving. >> we decided we were going to fly. we're triple vaxxed. >> reporter: the t.s.a. reporting six straight days of more than two million flyers, a first since the pandemic began. kelsey shields, who hasn't seen some relatives in 20 months, told cbs news what she's looking forward to. >> family time and being able to see them for, like, the first time since the pandemic. >> reporter: but getting there