"Καλό ταξίδι!"

Translation: Have a good trip!

[ZoranMudronja]

I would include the French phrase "Bon voyage", as it's adopted by the English (it's even found in Cambridge dictionary).

[jaye16]

Good point. I'll add it. Yes, I do like that. thanks.

[Sean_Roy]

I'm glad you did! Even though I'm a native English speaker, "Bon voyage" was the first thing I thought of when I read Καλό ταξίδι.

[timtz75]

"safe journey" in England

[jaye16]

Well done and many thanks we've added it.

[l_LOVE_CHlCKENS]

"safe travels" in the US

[GretelIvette]

It's also 'Have a good TRAVEL'

[GretelIvette]

This dear 'system' didn't accept 'Have a good travel'. But IT IS YES the same and is more usual in English to say '...good TRAVEL' instead of 'trip', at least in USA English. And every translater I checked it out, translated the same (Καλό ταξίδι) for both options.

[jaye16]

Please supply some references since as a native American I wouldn't use it nor can I find it in any references. "Travel" is a verb "ταξίδι" is a noun.

[William821561]

I've just come to comments to also suggest that "Bon voyage" should be an acceptable answer!

[jaye16]

"Bon voyage" is already one of the accepted answers. Thank you for your contribution, we always appreciate it.

[Swish755393]

Travel well?

[jaye16]

That's not what we say in English.

[Jezza11]

FYI: "Good travelling" is litterally what we say here in Oz and should be accepted. It has now been reported.

[AndersonS79]

I wrote safe travels as per the hint and it marked it wrong!