The European Commission has approved IAG's takeover of Aer Lingus, subject to conditions.
Regulators had expressed concerns that the merge would result in insufficient competition on several routes.
IAG is the parent company of British Airways, Iberia and Vueling.
However the Commission's received assurances that air passengers will continue to have a choice of airlines at competitive prices.
The EU's approval was the final hurdle to the takeover ahead of Aer Lingus's EGM next week.
