There are many places in Asia. If you mean Japanese, then you could say 'yoi tabi o' or 'yoi go-ryokoo'
Jal gat da WA (잘같다와)
"Have a good trip!" English is the official language of Australia.
buen viaje
Trevlig resa
maligayang paglalakbay
"Maligayang paglalakbay"
You could say "Habe iter jucundum!" (literally: "Have a pleasant trip/journey!")
bon voyage, good trip, good journey. as in 'have a good trip'
"bon voyage en France" is the way French speakers would say 'have a good trip to France'.
cael trip da
They say 'Schoene Reise', which translates to have a good trip.
You say "Good bye" in Yoruba language of the Western African origin as "Od'abo".
Faz uma boa viagem. (lit.: Make a good trip) Tem uma boa viagem. (lit.: Have a good trip) Commonly we say simply: Boa Viagem!