If you wanna know which airline operates at which terminal of Ninoy Aquino International Airport (Manila Airport), he is a list. I have also included the International Air Transport Association (IATA) code.
Hope this helps especially if you are travelling for the first time.
Air Canada
Terminal: 3
IATA Code: AC
Air China
Terminal: 1
IATA Code: CA
Air France
Terminal: 3
IATA Code: AF
Air Macau
Terminal: 2
IATA Code: NX
Air New Zealand
Terminal: 3
IATA Code: NZ
Air Niugini
Terminal: 1
IATA Code: PX
AirAsia
Terminal: 3
IATA Code: AK
AirSWIFT
Terminal: 4
IATA Code: T6
Alitalia
Terminal: 1
IATA Code: AZ
All Nippon Airways – ANA
Terminal: 2 or 3
IATA Code: NH
Alphaland Aviation
IATA Code: C9
Asiana Airlines
Terminal: 1
IATA Code: OZ
Bangkok Airways
Terminal: 2
IATA Code: PG
Cathay Dragon
Terminal: 3
IATA Code: KA
Cathay Pacific
Terminal: 3
IATA Code: CX
Cebgo
Terminal: 4
IATA Code: DG
Cebu Pacific
Terminal: 3
IATA Code: 5J
China Airlines
Terminal: 1, 2 or 3
IATA Code: CI
China Eastern Airlines
Terminal: 1
IATA Code: MU
China Southern Airlines
Terminal: 1
IATA Code: CZ
Delta Air Lines
Terminal: 3
IATA Code: DL
Emirates
Terminal: 3
IATA Code: EK
Ethiopian Airlines
Terminal: 1
IATA Code: ET
Etihad Airways
Terminal: 1
IATA Code: EY
EVA Air
Terminal: 1
IATA Code: BR
Gulf Air
Terminal: 1
IATA Code: GF
Hong Kong Airlines
Terminal: 1
IATA Code: HX
JAL – Japan Airlines
Terminal: 1
IATA Code: JL
Jeju Air
Terminal: 1
IATA Code: 7C
Jetstar
Terminal: 1
IATA Code: GK
Jetstar Asia
Terminal: 1
IATA Code: 3K
KLM Royal Dutch Airlines
Terminal: 3
IATA Code: KL
Korean Air
Terminal: 1
IATA Code: KE
Kuwait Airways
Terminal: 1
IATA Code: KU
Malaysia Airlines
Terminal: 1 or 2
IATA Code: MH
Oman Air
Terminal: 1
IATA Code: WY
PAL Express
Terminal: 2 or 3
IATA Code: 2P
Philippine Airlines
Terminal: 1, 2 or 3
IATA Code: PR
Philippines AirAsia
Terminal: 3 or 4
IATA Code: Z2
Qantas
Terminal: 3
IATA Code: QF
Qatar Airways
Terminal: 3
IATA Code: QR
Royal Brunei Airlines
Terminal: 1 or 2
IATA Code: BI
Saudia
Terminal: 1
IATA Code: SV
Scoot
Terminal: 1
IATA Code: TR
Singapore Airlines
Terminal: 3
IATA Code: SQ
Skyjet
Terminal: 4
IATA Code: M8
Thai Airways International
Terminal: 1
IATA Code: TG
Turkish Airlines
Terminal: 2 or 3
IATA Code: TK
UNI Air
Terminal: 1
IATA Code: B7
United Airlines
Terminal: 3
IATA Code: UA
Vietnam Airlines
Terminal: 1 or 2
IATA Code: VN
Xiamen Airlines
Terminal: 1 or 2
IATA Code: MF
Parting Words
The listed terminals above are the terminals used by the airlines mentioned for flight arrivals and departures. In some cases, these terminals can change. It is highly advisable to check for the information in your flight ticket or flight changes advisory from your airline.