Wizz Air is to add new routes from Bristol and Aberdeen to the Polish capital Warsaw in 2016.
The Hungary-based carrier has decided to base a sixth aircraft at Warsaw from May next year which will be used to serve the two new UK routes.
Both new UK routes will operate from 13 May 2016 with the Aberdeen flights operating on Monday and Thursday, and the Bristol service running on Wednesday and Sunday.
Wizz Air is also to start a twice-weekly route between Birmingham and Poznan from 18 December 2015 which will operate on Monday and Friday.
As part of its expansion from Poland, Wizz Air will add extra frequencies from Warsaw to existing UK routes from 13 May 2016.
Warsaw-Luton flights will be increased from 23 to 26 per week, while Doncaster flights will rise from 3 to 4 per week and the Birmingham service will go up to 3 weekly services from the current 2 per week.