Is ONE PIECE episode 152 filler?
Canon No, episode 152 of ONE PIECE is canon.
#152
Take to the Sky! Ride the Knockup Stream!
船は空をゆく！突き上げる海流に乗れ
Aired 27 Apr 2003
Mochibayo compiled this list from MyAnimeList's labels, because MyAnimeList's episode data is not reaching us at the moment.