Looking for a chance to win $1,000 worth of free flights along with other travel-related prizes? There’s a scavenger hunt going on in Denver that you won’t want to miss.

Denver Gazette’s Jonathan Ingraham reports that Frontier Airlines had hidden five green piggy banks around the Mile High City, with clues set to be pushed out via the airline’s social media channels related to where these piggy banks can be found.

“Team Frontier has been busy placing the banks in creative spots across Denver’s city center, and consumers can look to the airline’s social media channels for clues on where to find them and how to claim the prizes inside,” the airline said in a statement Thursday morning.

Each piggy bank includes a $1,000 flight voucher (which is enough for up to four round-trip tickets on Frontier) and a one-year membership to Frontier’s Discount Den Low Fare Travel Club. There’s also a chance to win the same prizes by entering online.

Here’s a link to Frontier’s Instagram page, presumably where some clues will be posted.

Read more about this giveaway on the Denver Gazette website.