The country's premier gateway was listed to be one of the “World's Most Improved Airports” this year.

According to the global survey of London-based research firm SkyTrax, the Ninoy Aquino International Airport (NAIA) ranked 10th place with Rome's Fiumicino Airport, Western Australia's Perth Airport and Alberta, Canada's Calgary International Airport in the first, second and third places, respectively.

In a statement, Manila International Airport Authority (MIAA) General Manager Ed Monreal said the challenge now is “how to sustain it.”

He also expressed gratitude to the passengers of NAIA, further crediting this development to his men's commitment and cooperation.

The Palace, meantime, welcomed NAIA's inclusion in the list.

More than 13 million travellers worldwide participated in the Skytrax's “World Airport Survey” from August 2017 to February 2018.

The survey covered key performance indicators of over 550 airports — check-in, arrivals, transfers, shopping, security, and immigration through to departure at the gate.

Singapore's Changi Airport was named as the “World's Best Airport” for the sixth consecutive year.

For now, several proposals are in place for NAIA's rehabilitation. These include those of the NAIA consortium which is composed of seven companies and the partnership between Megawide Corporation and India-based GMR Manufacturing Limited.

The NAIA complex, meantime, handles more than 40 million passengers every year, compared to its design capacity of only 30 million passengers.