Proactive Investors - Ryanair (LON:0RYA) has won a European Union court challenge which cancels regulatory approval for a €6bn (£5.2bn) cash injection for rival airline Lufthansa amid the pandemic.
The EU General Court in Luxembourg has annulled the European Commission's decision from June 2020 to recapitalise the airline, saying its assessment included "several errors".
It added that it was wrong to consider that Lufthansa "was unable to obtain financing on the markets for the entirety of its needs".
Ryanair also won a separate bid to topple the EU's 2020 approval of similar aid to SAS Airlines.
The commission in June 2020 approved the Lufthansa measures, saying a government plan to take a 20% stake in Europe's largest airline was in line with the bloc's state-aid rules and would prevent the carrier's collapse.
Shares in RyanAir, which is due to report full year results on May 22nd, were trading 2.2% higher late morning.