Please uncheck any airports you do not want in your selection, and then press the 'Show me how to get from Toronto to San Francisco' button at the bottom of the screen.

Matches for Toronto as part of the airport, city, or country name

Include	Airport name	Airport code	City	Country
	Toronto	YTZ	Toronto	Canada
	Pearson International Apt	YYZ	Toronto	Canada

Matches for San Francisco as part of the airport, city, or country name

Include	Airport name	Airport code	City	Country
	Embarkadero Airport	EMB	San Francisco CA	United States
	San Francisco China Basin Heliport	JCC	San Francisco	United States
	San Francisco	SFO	San Francisco CA	United States