Jetradar compares prices for airline tickets to Kosta Rika with 728 airlines from all over the world. We do not sell airline tickets ourselves, but you can use our service to find the lowest prices and special offers with no additional fees or mark-ups. Find the cheapest flights to Kosta Rika with Jetradar. The population of Kosta Rika is 4,516,000. The official currency is Costa Rican Colón (CRC).