The 18-year-old became the first qualifier in history to win a grand slam when defeating Leylah Fernandez in straight sets in Saturday's final at Flushing Meadows.
Raducanu, ranked 150 by the WTA before beginning her three-week long tournament, did not drop a single set across her 10 matches.
That victory in New York capped a life-changing couple of months for Raducanu, who also reached the last 16 of Wimbledon in her only other grand slam appearance before withdrawing due to medical reasons.
After spending a few days away from the court and taking in some of the sights the Big Apple has to offer, the Briton is ready to start preparing for her next tournament.
"I have a few days' rest and recovery," Raducanu, who became the first British female to win a major tournament since Virginia Wade on home soil at Wimbledon 44 years ago, told CNBC's Closing Bell programme.
"I think it was needed after the last seven weeks but then I am straight back to training and hungry to get better and come back out and play some more tournaments."
Raducanu was originally due to take part in qualifying for the Chicago Fall Tennis Classic later this month, but she may instead wait for next month's delayed Paribas Open in Indian Wells, where a wildcard entry is likely.
"After the US Open I wanted to give myself this week to completely switch off from tennis because it's been an extremely intense but rewarding seven weeks," she told the WTA's official website.
"But I've worked very hard to finish on such a high with the US Open, a whole week off was needed.
"I know I'll get back to work probably Monday or early next week to get back to training again. Schedule-wise, I'm not sure. Maybe Indian Wells, I don't know. I'm going back to London before my next tournament for sure."