JettaPlus is an online marketplace that allows travelers to sell their unused plane tickets. Sellers can submit their non-refundable tickets to JettaPlus, which verifies the tickets, lists them on the site, and transfers the tickets to buyers when purchased. Buyers can find attractive flight deals, while sellers get paid for tickets they can no longer use. The startup aims to address the estimated 72 million unused tickets each year due to changed travel plans. Revenue comes from commissions on ticket sales through the platform.