The skies will be packed … The TSA is expecting a very busy Fourth of July travel period, and based on this past Sunday's numbers, it's likely going to be a record-breaker. The TSA said it screened 2.99 million airline travelers on Sunday, which is the highest number ever for a single day. The agency says it expects to screen more than 32 million travelers between today (Thursday) and July 8th, which is more than 5% higher than last year. The airlines are expected to fly more than 271 million people this summer.