Formal:
* Je suis arrivé(e) sain et sauf. (I have arrived safe and sound.)
* Je suis arrivé(e) à bon port. (I have arrived safely.)
* J'ai pu arriver à destination sans encombre. (I was able to arrive at my destination without incident.)
Informal:
* Je suis arrivé(e) sans problème. (I arrived without any problem.)
* Tout va bien, je suis arrivé(e). (Everything is fine, I have arrived.)
* J'ai bien atterri. (I landed safely.)
Note:
* You need to conjugate the verb "arriver" (to arrive) according to the subject (I, you, he/she, we, you all, they).
* The word "sain et sauf" (safe and sound) is often used to emphasize that you arrived without any injuries or problems.
Example:
* "J'ai bien atterri à Paris. Merci de vous inquiéter!" (I landed safely in Paris. Thank you for worrying!)