Flight Toronto - San Francisco, CA prices from $160.11

Air Canada is the largest airline in Canada, providing scheduled and charter air transportation for passengers and cargo to over 200 destinations worldwide. The airline operates a fleet of over 400 aircraft, including narrow-body and wide-body jets, and serves both domestic and international routes. Air Canada is a member of the Star Alliance, a global airline network that provides passengers with access to over 1,000 destinations in 190 countries. The airline offers a range of services, including in-flight entertainment, Wi-Fi, and a loyalty program called Aeroplan. Air Canada is headquartered in Montreal, Quebec, and has hubs in Toronto, Vancouver, and Calgary.

Alaska Airlines is a major American airline headquartered in Seattle, Washington. It was founded in 1932 and operates a fleet of over 300 aircraft, serving more than 115 destinations across the United States, Canada, Mexico, and Costa Rica. Alaska Airlines is known for its commitment to customer service, on-time performance, and sustainability initiatives. It is a member of the Oneworld airline alliance and has codeshare agreements with several other airlines. Alaska Airlines offers a variety of travel classes, including First Class, Premium Class, and Main Cabin, as well as a loyalty program called Mileage Plan.

Flair Airlines is a Canadian low-cost airline that operates scheduled and charter flights to destinations across Canada, the United States, Mexico, and the Caribbean. Founded in 2005, the airline is headquartered in Edmonton, Alberta, and operates a fleet of Boeing 737 aircraft. Flair Airlines offers a range of fare options, including basic economy, economy, and premium economy, and allows passengers to add on additional services such as baggage, seat selection, and in-flight meals for an additional fee. The airline has grown rapidly in recent years, expanding its route network and increasing its fleet size to meet growing demand for affordable air travel in Canada.

Lynx Air is a regional airline based in Honduras that operates domestic and international flights to destinations in Central America and the Caribbean. The airline was founded in 2006 and has its main hub at Ramón Villeda Morales International Airport in San Pedro Sula. Lynx Air operates a fleet of small aircraft, including Cessna Caravans and Beechcraft 1900s, and offers both scheduled and charter flights. The airline's mission is to provide safe, reliable, and affordable air transportation to its customers, with a focus on serving remote and underserved communities in the region.

Porter Airlines is a regional airline based in Toronto, Canada. It was founded in 2006 and operates flights to various destinations in Canada and the United States. The airline is known for its distinctive brand and high level of customer service, offering amenities such as complimentary snacks and beverages, lounge access, and free Wi-Fi on board. Porter Airlines operates a fleet of Bombardier Q400 turboprop aircraft, which are known for their fuel efficiency and low noise levels. The airline has won numerous awards for its service and has been recognized for its commitment to sustainability and community involvement.

United Airlines is a major American airline headquartered in Chicago, Illinois. It is one of the world's largest airlines, operating a comprehensive domestic and international network of flights. United Airlines operates a fleet of over 800 aircraft, serving more than 350 destinations in over 50 countries. The airline is a founding member of the Star Alliance, which is the world's largest airline alliance. United Airlines offers a range of services to its passengers, including in-flight entertainment, Wi-Fi, and a loyalty program called MileagePlus. The airline has a strong commitment to sustainability and has implemented various initiatives to reduce its environmental impact.