This is a database of airline operations by countries. It could help you see what airlines operate in each country, so you can for example book a trip. Feel free to add any country or reputable major airline to the list, just follow the formatting already shown below. Keep the countries and airlines in alphabetical and International, Domestic and Regional in the same order.
#USA
###International
American Airlines
Singapore Airlines
Qantas
###Domestic
American Airlines
Delta
Southwest
United
Virgin America
###Regional
#Australia
###International
Air New Zealand
American Airlines
Emirates
Garuda Indonesia
Jetstar
Philippine Airlines
Qantas
Singapore Airlines
Thai Airways
United
Virgin Australia
Fiji Airways
Air Asia
###Domestic
Jetstar
Qantas
Tigerair Australia
Virgin Australia
###Regional
QantasLink
Rex Regional Express
Virgin Australia
#New Zealand
###International
Air New Zealand
Jetconnect
Virgin Australia
###Domestic
Jetconnect
###Regional
Air New Zealand
Jetstar
#Canada
###International
Air Canada
WestJet
###Domestic
Air Canada Express
WestJet
Sunwing
Canadian North
Yukon Air
Central Mountain Air
###Regional
WestJet
Air Canada Express
#UK
###International
British Airways
EasyJet
Ryanair
Thomson
Flybe
Croatia
Air France
Air Lingus
Norwegian
Qatar
Emirates
Luftansa
###Domestic
Flybe
Ryanair
EasyJet
British Airways
##Regional
Flybe
Easy jet
#Finland
###International
Finnair
Norwegian
Primera Air
TUIFly Nordic
###Domestic
Finnair
Nordic Regional Airlines
Norwegian
###Regional
Finnair
Nordic Regional Airlines
Norwegian