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