But Fonda told Leslie Stahl she has no regrets about traveling to North Vietnam during the war, talking to American prisoners of war or making anti-war broadcasts on North Vietnamese radio.
"The image of Jane Fonda, Barbarella, Henry Fonda's daughter...sitting on an enemy aircraft gun was a betrayal...the largest lapse of judgment that I can even imagine," Fonda told Stahl.
Fonda said that the U.S. prisoners were being used by both sides and the Vietnam War dragged on and that she felt she had to go on the radio to tell the truth and counteract government lies.
Fonda's autobiography, "My Life So Far," is about to be released.
She told Stahl that in the book she describes having three-way sex with her first husband, French director Roger Vadim and other women, saying she agreed because she was afraid Vadim would leave her.
The interview airs on "60 Minutes" on Sunday night.