UA United Airlines 727 Economy CAD SFO San Francisco US United States YTO Toronto CA Canada vayama.com true 2010-03-23T00:00:00Z DL Delta Air Lines 796 Economy CAD SFO San Francisco US United States YTO Toronto CA Canada delta.com true 2010-03-23T00:00:00Z AC Air Canada 839 Economy CAD SFO San Francisco US United States YTO Toronto CA Canada cheapoair.com true 2010-03-23T00:00:00Z UA United Airlines 891 Economy CAD SFO San Francisco US United States YTO Toronto CA Canada airfare.com true 2010-03-23T00:00:00Z