Budget airline Wizz Air today trimmed its full-year forecast for capacity growth, expecting disruptions due to strikes at European air traffic control centres to continue into autumn amid rising fuel prices. 

Profits at European airlines have been pressured this year by the cost of flight cancellations associated with ATC strikes across Europe, particularly in France. 

Ryanair, Easyjet, Wizz and Aer Lingus owner IAG submitted complaints this week to the European Commission against France, where public sector workers have staged a series of protests over the government's economic reforms. 

Ryanair, Europe's biggest low-cost airline, on Monday warned investors of more strikes and weaker ticket prices this summer, pushing its shares down sharply. 

The strikes are compounding problems for airlines that are already struggling with higher fuel costs as oil prices strengthen after a more than two-year slump. 

Wizz said in May it was confident it could pass on the rise to customers.

It also said it would benefit from the impact of high fuel prices as it aims to take market share when oil prices rise and higher-cost carriers are forced to withdraw unprofitable capacity from the market. 

The airline, which mainly serves passengers in central and eastern Europe, has also managed to keep costs down.

This is thanks to a growing proportion of Airbus A321 aircraft in its fleet that are more fuel efficient and carry more passengers. 

This helped the company stick to its net profit guidance of €310-340m for the year. 

However, the airline said its profit fell 14% to €50m in the first quarter ended June 30, hurt by the timing of Easter and higher-than-expected disruption costs related to the strikes. 

Revenue rose 17.9% to €553.4m, with passenger volume rising 19.7% in the quarter.