Lois's first chance to experience the thrill of flying on her own occurred in Action Comics 60, May 1943, by Jerry Siegel, John Sikela and Ed Dobrotka. The story must have been moderately popular because Lois was back in super-tights in Superman 45, in April 1947, this time courtesy of "magicians" Hocus and Pocus.  by Alvin Schwartz, John Sikela and George Roussos.
This may look like another Lane power trip, but actually it's Lois 4XR from the far future! Is there a family resemblance or not?! Will Superman ever know?  From Superman 57, March 1949, by William Woolfolk?, Wayne Boring and Stan Kaye. In Action 156 Lois's super powers were courtesy of  Luthor.
May 1951. Art by Al Plastino.
Lois became Power Woman in this memorable dream sequence from Superman 125 by Jerry Coleman and Kurt Schaffenberger.  November 1958.  Then shared her powers with meek Clark Kent! Back to the standard crimson-and-blue for Lois Lane #8 in April 1959, by Alvin Schwartz and Kurt Schaffenberger.
Not a hoax, not a dream, not an imaginary story!  But it isn't Lois either!  From Lois Lane 15 , February 1960, by Otto Binder and Kurt Schaffenberger.  Cover by Curt Swan and Stan Kaye. Why should Lois have all the super-fun?  Lana gets in on the action too in Lois Lane 21, November 1960. "The Battle Between Super-Lois and Super-Lana" is by Jerry Siegel and Kurt Schaffenberger.  Cover by Curt Swan and Stan Kaye.
That's right. It's Lois 4XR again!  This time by Bill Finger? and John Forte.  Cover by Curt Swan and Stan Kaye, from Lois Lane 28, October 1961. Action 274 Jerry Siegel and Kurt Schaffenberger. Cover by Curt Swan and Stan Kaye, March 1961.  I forget which this was, a hoax, dream or imaginary story.
It was another Great Imaginary Story in February 1963 when Edmond Hamilton, Curt Swan and George Klein sent Lois Lane to Krypton instead of Kal-El to Earth.  Everything came out more or less the same though.  Isn't that ironic?  From Superman 159. Imaginary stories were rife with possibilities for variations on a Super Lois.  Here she is as Krypton Girl in Lois Lane 47, February 1964.  Here Lois uses a black wig to disguise her black hair.  (?) Leo Dorfman and Kurt Schaffenberger perform this dastardly deed.  Imaginary stories increasingly began to be seen as cheating, because you could dump your characters into the most awful situations and not have to be able to think of a resolution.

More Supergirls, women, robots and hoaxes over here.