The most frequently used airline companies from Ottawa to Toronto are generally
Türk Hava Yolları,
Scandinavian Airlines,
Emirates,
Lufthansa,
Air Transat,
JSC Aviaprad,
Air France,
Egyptair,
Cathay Pacific,
Asiana Airlines,
Porter Airlines,
Aer Lingus,
SATA International,
Lan Airlines,
TAP Portugal,
Virgin Atlantic,
Air Canada,
Swiss,
Austrian,
Xiamen Airlines,
Avianca,
Delta Air Lines,
Qantas Airways,
Korean Air,
LOT Polish Airlines,
United Airlines,
Air Ecuador Airecu,
Westjet,
Aeromexico,
China Southern Airlines,
Philippine Airlines,
Air Canada Jazz
are companies.