The Polish superstar has now dropped just 14 games in her opening five matches at Melbourne - and a mere seven in the last four - en route to a semi-final showdown with another American, Madison Keys.
Earlier on Wednesday, Keys was made to work much harder in her quarter-final, coming back from a set down to oust Ukrainian Elina Svitolina 3-6 6-3 6-4 in a high-quality affair involving only one service break in each set.
But if Keys is to go any further in the tournament she will need to go to a whole new level against Swiatek.
Iga Swiatek was untouchable on serve against Emma Navarro. (James Ross/AAP PHOTOS)
The 23-year-old world No.2 already has five major titles to her name, although she has never gone further than the last four at Melbourne Park in six previous attempts.
There was a controversial moment in the fifth game of the second set when Swiatek chased down a drop shot on game point.
Navarro complained to the chair umpire that the ball had bounced twice before the Pole hit it - which a video replay showed to have happened - but as the American did not stop mid-point, her appeal fell on deaf ears.
Swiatek came from nowhere! ��♂�💨— Stan Sport (@StanSportAU) But was it a double bounce? 👀↳ Australian Open 2025. Every Match. Ad-free. Centre Court in 4K, on Stan Sport.#StanSportAU #AO2025 #AusOpen pic.twitter.com/oiGPNOnOAJJanuary 22, 2025
Swiatek won that game and the next three to close out the victory in one hour and 29 minutes.
"I think it was much tougher than the score says," said Swiatek.
"Emma is a fighter. I knew she's not going to pull back.
"I wanted to stay focused until the end and keep my intensity.
"At the end, I'm happy that I won the tight games. This is what made a difference.
"I'm really happy with the tournament overall, being in the semis is great.
"Now I'll push for more."
In sharp contrast to Swiatek's one-sided procession to the last eight, No.8 seed Navarro was taken to three sets in each of her first four encounters, the first time that had happened at the Open since Jelena Dokic was also stretched to the limit in 2009.
The 29-year-old Keys held sway when it mattered most against Svitolina, the No.28 seed.
"I felt like I had to start playing a little bit more aggressively and try to get to the net a bit quicker," the 19th-seeded Keys said in her on-court interview.
"She was controlling a lot of the points and making me run so I felt like I needed to try and get on the advantage a little bit quicker and luckily I was able to do that."
Madison Keys has advanced to her third Australian Open semi-final after downing Elina Svitolina. (James Ross/AAP PHOTOS)
Keys' best result at a major was reaching the final of the 2017 US Open, while she also advanced to the last four at Melbourne Park in 2015 and 2022.
"I think I play a little bit smarter for sure," said Keys, when asked to compare the difference between 2015 and 2025.
"Probably a little bit less fearless.
"But to be here 10 years later in the semi-finals again, I'm really proud of myself."
14°C