How do you say have a good trip in Flemish?

There are a couple of ways to say "have a good trip" in Flemish, depending on the context and level of formality:

Formal:

* "Goeie reis!" (This is the most common and straightforward way to say it.)

* "Een aangename reis gewenst!" (This is a more formal and polite way to say it, literally meaning "A pleasant trip wished!")

Informal:

* "Veel plezier op reis!" (This literally means "Have a lot of fun on your trip!" and is more casual)

* "Prettige reis!" (This is a more concise way to say "have a pleasant trip")

You can also use "Tot ziens!" (See you!), which is appropriate for a good-bye in any context.

Remember that Flemish is a dialect of Dutch, so these phrases are also understood in the Netherlands.