After obtaining the Airship you can fly around Spira and obtain anything you may have missed.
Secret Map Locations
Six secret locations can be found hidden on the Spira map while inside the Airship. Use the cursor while on the map and press X to find these secret areas.
A treasure chest is located in this part of the desert. Inside is Tidus's weapon, Ascalon, which gives the team double AP!
A treasure chest is located beneath a waterfall. Inside is Kimahri's weapon, Dragoon Lance.
Walk across this ruin to find a treasure chest containing Rikku's weapon, Sonar.
This area contains a treasure chest with Lulu's armor, Phantom Bangle.
This is the waterlogged temple you found at the beginning of the game. Return here to recruit the Aeon Anima to your party.
This is the toughest dungeon in the entire game with two very strong Fiends: the Ultima Weapon and the Omega Weapon. It's also home to the Al Bhed Primer Vol XXVI.
You may or may not have noticed certain signs around Spira with Al Bhed on them. If you learned he Al Bhed language, you can now decipher these signs and find three secret passwords. Input these passwords into the Airship to find secret locations.
Input the password “GODHAND” into the Airship to find a secret area below Mushroom Rock Road. This area contains a treasure chest with Rikku’s Celestial Weapon inside.
Input the password “VICTORIOUS” into the Airship to find a secret area at the ruins in Besaid. Climb up the tree to find Rikku’s armor, “Victorious.”
Input the password “MURASAME” into the Airship to find a secret area at the ruins in Besaid. Nearby is Auron’s special weapon, “Murasame.”