Here are some options:
* Sandra: This is the most common and closest sounding name to Sondra.
* Sonya: This name has a similar sound and is also popular in French.
* Solange: This name has a similar meaning of "sun" or "sunshine," which could be relevant if Sondra's name has a meaning related to sunlight.
Ultimately, the best way to translate "Sondra" depends on the context and your desired meaning.