Laudamotion is to double its Airbus fleet from nine to 18 aircraft in summer 2019 with Ryanair as its majority shareholder.
Ryanair purchased a 75% stake in the airline from Niki Lauda in August.
Laudamotion CEO Andreas Gruber said: "Laudamotion has already achieved load factors over 90% in its first summer season, thanks to the efforts of over 500 Laudamotion colleagues.
"These nine additional 2019 Airbus deliveries ensure that Laudamotion will grow again by at least 20% in 2019 to 5 million guests a year. We look forward to offering even more low fare choices to Austrian and German customers."
Ryanair said Laudamotion would also have a new livery that reflects its Austrian heritage.
