She held from 5-6 to force the tiebreak but Vondrousova stepped up again, taking it 7-2 to reach her first final, clinching victory, fittingly, with a ideal drop shot victor.
Thiem reached the semifinals for a fourth successive year with a 6-2, 6-4, 6-2 victory against Russian 10th seed Karen Khachanov.
In Sunday's final, the No. 2-seeded Nadal will play No. 1 Novak Djokovic or No. 4 Dominic Thiem.
Helped by his switch to a bigger-headed racket in 2014, Federer now drives through Nadal's serve, with topspin, where once Federer tried to slice it back after it kicked up high to his backhand.
"I'm sure some people would debate if Ringo Starr was the less famous". "It's just been an wonderful journey that I've been on".
"Dominic is deservedly where he is, one of the top four guys, especially on clay".
But the 33-year-old Spaniard began finding his form at last month's Italian Open, beating Djokovic in that final. "I don't mind, but I don't think it should be like that".
Djokovic has experienced similar delays before and bounced back during his ongoing 26-match Grand Slam win streak.
Organisers said the decision was taken due to the worsening weather conditions but just after play was suspended for the day at 6:45pm (1645 GMT), bright skies appeared over the site.
"The presence of history-making is stronger than ever right now in my career. That's ultimately when I play my best tennis and that's what we are after".
After Google and Amazon, US antitrust spotlight turns on Apple and Facebook
In 2013, the FTC closed an antitrust investigation of Google over whether it favored certain search results, among other things. The company declined to comment on Monday.
The last time Djokovic made the semi-finals in Paris was 2016 when he went on to win the title.
Nadal raced into a 3-0 lead during the first set after an early scare where his serve was nearly broken by the Swiss.
Konta gathered herself, though, and took total control of the second set with an early break, moving 5-3 in front again.
It all played into Nadal's hands as he took his record in the tournament to 92 wins against just two losses.
Zverev's 40th and last unforced error proved to be the final point of the one-sided quarterfinal. He's number one for a reason.
Amelie Mauresmo tweeted in French, "I think we have hit the bottom ..." Barty has played the final of doubles tournaments at Grand Slams and she has also won big tournaments such as the Miami Masters. "I didn't know that", said the teenager when first told that she would not be playing on the main court.
The world No.8 will rise to No.2 if she beats unseeded Czech Marketa Vondrousova on Court Philippe Chatrier on Saturday (2200 AEDT), having survived a tough semi-final against American teen sensation Amanda Anisimova.
Rafael Nadal beat rival Roger Federer 6-3, 6-4, 6-2 to reach his 12th French Open final. "This is more than I could have asked for". "I feel like I have played some really good tennis, some consistent tennis". It tossed loose dirt from the court into both players' eyes, so much so that Federer joked it felt as if they were playing in a sandbox.
In response to a reporter's question at the Italian Open - which Nadal won in a promising sign just ahead of Roland Garros - Nadal gave a rapidfire tour of his psyche that went viral on social media: "What happened in Monte-Carlo happened".