Cathay Pacific Airways will progressively introduce a premium economy class and new economy class seats on its long-haul aircraft from March 2012 onwards.
The Oneworld carrier's new premium economy class will be installed on all of its long-haul aircraft such as Airbus A330-300s, A340-300s, Boeing 747-400s and 777-300ERs.
Each aircraft will have 26-34 seats with a 38" seat pitch, said the airline.
"Earlier this year, we introduced our new Business Class to great acclaim and I'm sure our Premium Economy will have just as big an impact," said Cathay Pacific's CEO, John Slosar.
The airline will also install new economy class seats on its Airbus A330-300 and Boeing 777-300ER aircraft, with a wider seat width than its existing long-haul economy class seats.
The premium economy class and economy seats will initially be featured on Cathay's flights to Sydney and Toronto, before they are expanded to other long-haul destinations.
It also plans to have 87 of its aircraft retrofitted with the new seats by the end of 2013, added Cathay Pacific.