Italy's Alitalia Group plans to take delivery of a further 10 aircraft in the second half of the year.
The airline's plan envisages the introduction of one Airbus A330, four A319s and the first five Embraer aircraft, although it does not specify whether these will be E-175s or E-195s.
Alitalia said it also plans to completely renew the cabin interiors of 10 Boeing 777s by May 2012.
The 27 new aircraft it has taken delivery of since 2009 have cut its average fleet age to 8.9 years, it added.
In addition it hopes to increase the depth of its partnership with Air France-KLM. It said: "As early as in the second year of partnership, the targeted synergies envisaged for the first three have been reached.
"This result favours a further advancement of the partnership with new forms of commercial and industrial collaborations."
The group's net loss for the first half of 2011 was €94 million, substantially better than 2010's loss of €164 million.
Its half-yearly statement noted that the improved financial results were more notable when seen against the background of rising fuel costs (up €130 million at €460 million) and dips in the important North African and Japanese markets due to political uncertainty and natural disasters respectively.
Outlook for the third quarter showed further acceleration of passenger and cargo growth, particularly on long-haul routes, said the airline.