Have a good trip! (3,6)
I believe the answer is:
bon voyage
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">have a good trip</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for bon voyage that I've seen before include "travel well!" , "Have a good trip - on the briny" , "Have a good journey - at sea" , "Have a nice cruise, monsieur" .)