I needed to extend my family's stay in Palm Springs with my parents and was able to find a one stop ONT-PHX-SEA for quite cheap (far cheaper than change fee plus refare on PSP-SEA nonstop). It's indeed a great airport, so quiet you kind of wonder how it continues on... AS has scaled back flights here quick significantly (there used to be 3 SEA-ONT flights, only 2 I think now).