Phoenix Sky Harbor International Airport (PHX) is not currently served by the Ryanair PHX Terminal ,although Ryanair runs flights out of a variety of terminals depending on the airport. Check the airport's website for the most recent terminal information if you're looking for information regarding Ryanair's operations or those of other low-cost carriers at PHX. Ryanair is mostly a European airline that specializes in low-cost travel to well-known locations. Visit Ryanair's official website or the Phoenix Sky Harbor terminal guide for the most recent information on any upcoming routes or upgrades.