The Hungarian low cost carrier reported profits of €50 million in the three months to June 30, down 14% on Q1 2017.
It has also reduced its full-year growth forecast with ATC disruption likely to continue into the autumn.
Nonetheless, passenger numbers increased nearly 20% to 8.6 million and revenue to €553.4 million, up some 18%.
Wizz is the latest airline to pin stalling financials on the European ATC situation.
