Steven Weber -- Wife Files For Divorce

"Wings" star Steven Weber is cleared to fly solo again -- his wife of 17 years just filed for divorce, TMZ has learned.

Weber's estranged wife, Juliette Hohnen, filed the docs in Los Angeles County Superior Court in early February -- citing "irreconcilable differences."

This is divorce #2 for Weber ... who's recently appeared on "2 Broke Girls" and "Wilfred."

According to docs, Steven and Juliette tied the knot back in 1995 -- while he was playing Brian Hackett on "Wings" -- and they've been separated since Oct 2012.

They have two sons together -- ages 10 and 12. She's asking for joint legal and physical custody ... and spousal support.

Fun fact: Steven's first ex-wife is Finn Carter -- co-star of the 90s cult classic "Tremors" ... which is awesome.