All the airports that Frontier Airlines flights have traveled to See the airports that Frontier Airlines flights have come from / or see all the flights this airline has flown (in and out of SFO)

Denver International Airport. This airport in the United States is also referred to as DEN or sometimes KDEN
McCarran International Airport. This airport in the United States is also referred to as LAS or sometimes KLAS
Los Angeles International Airport. This airport in the United States is also referred to as LAX or sometimes KLAX
Sky Harbor International Airport. This airport in the United States is also referred to as PHX or sometimes KPHX
Hartsfield-Jackson Atlanta International Airport. This airport in the United States is also referred to as ATL or sometimes KATL
Dallas-Fort Worth International Airport. This airport in the United States is also referred to as DFW or sometimes KDFW
Ontario International Airport. This airport in the United States is also referred to as ONT or sometimes KONT
Orlando International Airport. This airport in the United States is also referred to as MCO or sometimes KMCO
George Bush Intercontinental Airport. This airport in the United States is also referred to as IAH or sometimes KIAH
Chicago O'Hare International Airport. This airport in the United States is also referred to as ORD or sometimes KORD
Chicago Midway International Airport. This airport in the United States is also referred to as MDW or sometimes KMDW
Cincinnati/Northern Kentucky International Airport. This airport in the United States is also referred to as CVG or sometimes KCVG