The untitled Superman reboot is starting to take flight with Kevin Costner signing to portray the adoptive father of Superman opposite Henry Cavill and Diane Lane.

Warner Bros., which plans to get into production this summer, confirmed the announcement Thursday.

Lane signed two weeks ago to play Martha Kent. The Kents are adoptive parents in the Superman origin story in which Martha and Jonathan come across the rocket carrying the infant Kal-El and rename him Clark Kent.

Warner and Legendary Pictures made the announcement last month that Cavill had been tapped as the lead and that the reboot of the tentpole franchise would hit theaters in December 2012.

Charles Roven, Emma Thomas, Christopher Nolan and Deborah Snyder are producing, with Legendary topper Thomas Tull and Lloyd Phillips exec producing, Zach Snyder (“Watchmen”) is directing.

“Jonathan Kent is the only father figure Clark has ever had, the man who was there to help Clark understand what he was meant to do in the world as Superman,” Snyder said. “Kevin will be able to communicate the quiet strength of this rural American man who raised the greatest super hero of all time.”

Plot details remain under wraps. Screenplay’s being penned by David S. Goyer, based on a story by Goyer and Nolan.

Alice Eve, Diane Kruger and Rosamund Pike are among the thesps that have been under consideration for the female lead — whose identity hasn’t been disclosed, other than it not being the Lois Lane role.

Legendary teamed with Warner Bros. on the last iteration of The Man of Steel, the Brandon Routh starrer “Superman Returns,” which grossed $391 million in 2006.

By getting the Superman reboot into theaters for holiday 2012, Warners will have a pair of powerhouse entries, as Peter Jackson’s “The Hobbit Part One” is due for release at the same time.

Costner recently starred in “The Company Men.” His credits include “Swing Vote,” “The Upside of Anger,” “Message in a Bottle,” “Dances With Wolves,” “Thirteen Days,” “Wyatt Earp” and “Waterworld.”