Spanish travel reservations firm Amadeus said on Friday it was in talks with Iberia about buying the airline's 66 percent stake in their jointly-owned Spanish unit Savia Amadeus.

Amadeus said it estimated the maximum price for the stake in the partnership, through which Amadeus operates in Spain and Portugal, was EUR82.5 million (USD$107.6 million).

Iberia is one of Amadeus's main shareholders, along with Air France and Lufthansa.

The talks with Iberia come after Amadeus bought Air France out of a similar partnership in France at the end of last year. It paid the French carrier EUR85.8 million (USD$111.9 million) for its 66 percent stake in the French national marketing company.

The airlines which control Amadeus are in talks with two private equity firms about forming a new company to buy out all of Amadeus for some EUR4.3 billion (USD$5.61 billion) and to then delist its shares.