 Today is supposed to be the busiest air travel day of the year so far. ABC's Jim Ryan. The 53,677 commercial cargo and charter flights expected in the air today will be a one-day record for this year, but it won't stand for long. The Transportation Security Administration expects to screen over 3 million people tomorrow, the peak day during the Independence Day holiday, which runs through July 8th. AAA expects nearly 71 million people to hit the road.