Officials say the parent company of British Airways has made a third, improved takeover approach to Irish airline Aer Lingus and an announcement of the offer is expected Monday.

The 2.50-euro ($2.80) per share offer by IAG values the Dublin-based carrier at 1.3 billion euros ($1.45 billion). Over the past month Aer Lingus has rejected two lower-priced proposals from IAG, created in 2009 by the merger of British Airways and the Spanish airline Iberia.

Officials from IAG and Aer Lingus confirmed the value of Friday's improved offer to The Associated Press. They spoke on condition of anonymity Saturday because neither was authorized to disclose details in advance of Monday's anticipated announcements to stock exchanges in London and Dublin.

Aer Lingus' two biggest shareholders are Ryan air and the Irish government.