Labor Day is the busiest travel day of the year at Reno-Tahoe International Airport.

"It's even busier than the Wednesday before Thanksgiving," said Brian Kulpin with Reno-Tahoe International. "Every single seat is filled that is what we want to see at the airport."

Authorities say 20,000 people flew in for Burning Man last week; many are on their way home on Monday.

"I'm flying to Detroit through Denver which means, with the time changes, I'll be landing around 5:00 p.m.," said Erik Walz of Lansing. "I have a couple of friends also flying on different airlines; It'll probably be 8 p.m. before I settle in and I'll probably sleep for a day and a half before I go back to work."

Bags that come from the Playa have to be put in plastic bags before they're checked.

"Every bag that comes back from the Playa and goes on our bag belt system has to be wrapped in plastic," Kulpin said. "That prevents our bag belt system from breaking down; that Playa dust can actually gum up the system."

There are boxes out on the curb so Burners can throw away anything they don't want to take through security. There's even a spot set up to donate bikes.

"A lot of times the Burners will discard their bikes - not anymore," Kulpin said. "You can bring them right to the airport the Kiwanis will take those bikes and refurbish them for charity.  t's a great program."

After a week out in the desert, some travelers are looking forward to getting home.

"Burning Man was different than what I expected," said Marco from Mexico. "It was my first time and I'm not sure if I'm coming back, it's not my ambiance. It was huge, full of art ,and my camp was awesome so overall it was good experience though."

Burning Man brings $11 million in economic impact to Reno-Tahoe International every year.