The remnants of Tropical Storm Hanna may have delayed the women's final one day until Sunday but there was no halting Hurricane Serena's relentless pursuit of a third US Open title.

The 26-year-old American didn't drop a set in breezing to her first US Open crown in six years with a gritty 6-4, 7-5 victory over second seed Jelena Jankovic at Arthur Ashe Stadium.

"I am so excited," Williams said. "Usually after a Grand Slam I feel like I still have another match to play but I don't really feel that way today.

"I feel like it's done and it's all over and I am so excited.

"I just think it showed on the court."

Williams, who won the US Open in 2002 and 1999, is enjoying a renaissance season on the WTA Tour with four titles, taking her career total to 32. She plans to add to her Grand Slam collection.

"It doesn't stop here," Williams said. "I feel so young and so energized every week. It feels like I am having a new career."

Fourth-seeded Williams was firing on all cylinders as she led all women with 33 aces in the tournament.

Williams now has 4-3 edge over Jankovic in career meetings but none of the previous six felt as sweet as this one.

They split two earlier meetings in 2008 with Williams winning in the Key Biscayne final and Jankovic winning in the quarterfinals of the Australian Open.

"This was magical," Williams said. "It was everything coming together like magic."

Asked to compare this US Open to the other two, Williams said they are all special in their own way.

"Each one means a lot," she said. "The 1999 one was special because I knew I was going to win it. I just felt it.

"I wanted it so bad in 1999. It was my first Grand Slam so no one can take that away. I won doubles that year too."

She says all the hard work and getting up at the crack of dawn finally paid off.

"I've been working so hard," Williams said. "Sometimes I wake up at 6 a.m. to go practice it was too dark.

"I would have to wait until it gets light. No one really knows the work an athlete puts in.

"It's worth it. I felt like, gosh, I have been working the hardest, I should win."