Croatia Airlines announced it will launch regular flights connecting Zagreb to Montenegro's Podgorica and Bulgaria's Sofia this summer. The first flight on the route to Sofia is scheduled for May 1, while the last take-off will take place at the end of October. The service to the Bulgarian capital will take place three times per week, on Monday, Wednesday, and Friday. Tickets are available on the company's website, starting from EUR 139 ($151.8) for return flights, the statement reads.