Have you ever wondered, "who owns this airline?"

I started wondering which airlines fully own or partially own other airlines, so I did some research and the results are below. 

Africa

Ethiopian Airlines Group Owns:

• Ethiopian Airlines
• ASKY Airlines
• Ethiopian Cargo
• Ethiopian Aviation Academy
• Stakes in several African startup carriers

Kenya Airways Owns:

• Kenya Airways
• Jambojet

Asia-Pacific

Qantas Group Owns:

• Qantas
• Jetstar Airways
• QantasLink brands
• Network Aviation
• Eastern Australia Airlines

Partial ownership:

• Jetstar Japan (33%)

Alliance Airlines (~20%)

Virgin Australia Group Owns:

• Virgin Australia
• Virgin Australia Regional Airlines

Ownership: Bain Capital (major owner)

Air New Zealand Owns:

• Air New Zealand

Fiji Airways Owns:

• Fiji Airways
• Fiji Link Airways

Singapore Airlines Owns:

• Singapore Airlines
• Scoot
• Partial ownership:
• Vistara (before merger into Air India)
• Tata SIA joint ventures historically

Malaysia Aviation Group Owns:

• Malaysia Airlines
• Firefly
• MASwings
• Amal

ANA Holdings Owns:

• All Nippon Airways (ANA)
• Peach Aviation
• ANA Wings
• Partial stakes:
• Air Do
• Philippine Airlines interests historically

Japan Airlines Owns:

• Japan Air
• ZIPAIR
• J-Air
• Japan Air Commuter
• Partial stakes:
• Jetstar Japan
• Spring Japan

Korean Air Owns:

• Korean Air
• Jin Air

Asiana Airlines Owns:

• Asiana Airlines
• Air Busan
• Air Seoul

Cathay Pacific Owns:

• Cathay Pacific
• HK Express
• Air Hong Kong

HNA Aviation Group Owns:

• Hainan Airlines
• Grand China Air

China Eastern Air Holding Owns:

• China Eastern Airlines
• Shanghai Airlines
• China United Airlines
• China Cargo Airlines
• OTT Airlines

Minor stakes in:

• Air France–KLM
• Sichuan Airlines

China Southern Air Holding Owns:

• China Southern Airlines
• Xiamen Air
• Chongqing Airlines
• Hebei Airlines
• Jiangxi Air

Minor stakes in:

• Sichuan Airlines

HNA Aviation Owns:

• Hainan Airlines
• Beijing Capital Airlines
• Tianjin Airlines
• Lucky Air
• Urumqi Air
• West Air
• GX Airlines
• Fuzhou Airlines
• Hong Kong Airlines
• Suparna Airlines

AirAsia Group Owns:

• AirAsia Malaysia
• Thai AirAsia
• Indonesia AirAsia
• Philippines AirAsia
• AirAsia Cambodia
• AirAsia X
• Thai AirAsia X

EVA Air Owns:

• EVA Air
• UNI Air

Europe

Lufthansa Group Owns:

• Lufthansa
• Swiss International Air Lines
• Austrian Airlines
• Brussels Airlines
• Eurowings
• Discover Airlines
• Majority/partial ownership:
• ITA Airways (moving toward majority ownership)

International Airlines Group Owns:

• British Airways
• Iberia
• Aer Lingus
• Vueling
• LEVEL
• Iberia Express
• BA CityFlyer
• Partial ownership influence:
• Qatar Airways owns a large stake in IAG itself

KLM Owns:

• KLM
• Air France
• Transavia
• Martinair
• KLM Cityhopper

Ryanair Holdings Owns:

• Ryanair
• Malta Air
• Buzz
• Lauda Europe

Aegean Airlines Owns:

• Aegean Airlines
• Olympic Air

Latin America

LATAM Airlines Group Owns

• LATAM Brasil
• LATAM Chile
• LATAM Peru
• LATAM Colombia
• LATAM Ecuador
• LATAM Paraguay
• LATAM Cargo divisions

Strategic investors:

• Delta Air Lines
• Qatar Airways

Grupo Aeroméxico Owns:

• Aeroméxico
• Aeroméxico Connect
• Aeroméxico Cargo

Middle East

Etihad Airways holds stakes in:

• Etihad
• Alitalia
• Air Serbia
• Air Berlin

Emirates Owns:

• Emirates 
• dnata (aviation services company)

Qatar Airways Group Owns:

• Qatar Airways
• Qatar Executive
• Qatar Airways Cargo

Minority stakes/investments:

• Virgin Australia
• IAG (British Airways/Iberia parent)
• Cathay Pacific
• Airlink

Air India Group Owns:

• Air India
• Air India Express
• AIX Connect
• Vistara (merged)

Saudia Group Owns

• Saudia
• flyadeal

North America

American Airlines Group Owns:

• American Airlines
• Envoy Air
• PSA Airlines
• Piedmont Airlines
• Partial ownership:
• Republic Airways Holdings (~20%)

Delta Air Lines Owns/Controls:

• Delta Airlines
• Endeavor Air
• Partial stakes:
• LATAM Airlines (minority stake)
• Virgin Atlantic (49%)
• Previously held stake in WestJet

United Airlines Holdings Owns:

• United Airlines
• Regional partnerships under United Express 

Alaska Air Group Owns:

• Alaska Airlines
• Horizon Air
• Hawaiian Airlines 

Air Canada Owns:

• Air Canada 
• Air Canada Rouge
• Air Canada Express operations 

WestJet Group Owns:

• WestJet
• WestJet Encore
• Sunwing Airlines

Russia

Aeroflot Group Owns:

• Aeroflot

Rossiya Airlines

• Rossiya Airlines
• Pobeda