The 33-year-old showed off her trim figure while posing in a striped bikini at a Bali resort, and captioned the snap: "Last day in paradise."
Keira was on the trip with former Miss Universe Australia, Tegan Martin - and there was no sign of Jarrod during their stay.
Neither Keira or Jarrod - who have never been shy about sharing shots of their PDAs - have posted pictures together since the end of April, causing speculation they may have broken up.
Keira even celebrated a birthday on May 27, but there were no comments from Jarrod on her birthday post.
The couple, who fell in love after meeting in Fiji on Bachelor in Paradise in 2017, have had a rocky ride since the start.
Moving in together after filming ended, they split in August 2018 only to reunite in January this year.
Keira opened up to New Idea during their last breakup where the reality TV star admitted she still loved Jarrod, and she saw him in her future.
"Jarrod and I had a two-year plan – get married and have a baby within two years," she explained.
"I used to tell him all the time I wanted a baby, which is crazy because I didn’t even want kids until I met Jarrod."
Explaining she still wanted to go ahead with her family plans, she said: "If I get to 35 and I’m still single, 100 per cent I will freeze my eggs and wait for the right person."