Coloradans heading out of town for a final round of summer fun over Labor Day weekend can expect busy highways and long lines at Denver International Airport, though experts say a little planning may reduce travel stress.

DIA will see an estimated 429,000 people pass through airport security between Thursday and Tuesday, with peak travel days seeing 85,000 people on Friday and 84,000 people on Monday, airport officials said.

That’s about 10,000 more people per day than in July, when an average of 75,409 people went through security every day.

A good chunk of those people will be on United flights, with the airline expecting more than 64,000 people flying out of Denver every day.

This is the first major holiday since the airport opened the new east security checkpoint, which means all s

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