ασφαλές ταξίδι [asfales taxeethi]
In Jamaican Patois, you can say "Safe travels" as "Safe trip" or "Safe travels, yuh hear?" It's a friendly way to wish someone a good journey.
boa viagem
Turvallista matkaa!
"Bezpiecznej podróży!"
khair nal jao
"Želáme Vám bezpečnú cestu"
eka suraksita yatra hai
Have a safe journey = heb een veilige reis
You can say, "Selamat jalan!"
Slán agus beannacht leat.
I think the closest would be 'Kia pai te haere' ...
Tenga un buen viaje de regreso is have a safe trip home in spanish.