Polish state-owned airline LOT is launching connections from the southern city of Kraków to Bucharest and Dubrovnik.
The first of the new flights to the Romanian capital will take off on April 1.
Passengers will be offered flights on Mondays, Wednesdays and Fridays.
A new seasonal connection to Dubrovnik in Croatia will be offered on Saturdays from May 25 to September 28.
Since the beginning of 2016, LOT has launched 66 new flights, including long-haul destinations such as Los Angeles, Tokyo and Seoul.
The Polish carrier says it flew nearly 9 million passengers in 2018, more than in any previous year and up from 6.8 million in 2017.