How to locate a lost iphone that is connected to a known Wi-Fi?

I lost my iphone 5, i have a messenger app (kik) and it shows me that when i send a message to my phone the messages are delivering meaning its connected to a Wi-Fi, because its disconnected at the moment. So how could locate it (any website or app) I DON't HAVE FIND MY iPhone APP…

Find my iphone, if to lazy to turn that on then just consider it gone