The 'Keeping Up With The Kardashians' star has rented out a seven-bedroom house in Nantucket, Massachusetts, for all of July, and has been staying there with her and Scott's three children, Mason, six, Penelope, four, and 19-month-old Reign.
And despite splitting up with Scott last summer, she has allowed her ex to join in their summer fun.
According to gossip website TMZ, the house rents out for $6,600 a night, but Airbnb offered Kourtney a deal.
Kourtney has been loving her time on the island just off Cape Cod and has been keeping her fans up-to-date with regular Instagram posts.
As well as the stunning views and beaches, she posted an adorable picture of her and Penelope relaxing in their swimwear in the grounds of the house.
This is not the first holiday Scott, 33, has joined Kourtney, 37, since they split.
He recently joined the Kardashian family on their Cuba vacation and he admitted he was on his best behaviour so he could impress his former love.
He said on the show: ''One of the biggest issues between Kourtney and I is me drinking. I get overly emotional when I drink and I just want her to see that I can keep it together.''
And his plan seemed to work as Kourtney was very impressed by Scott.
Speaking to sister Kim Kardashian West, she revealed: ''I'm really glad he came, he's been so good. He has been fine. I'm glad that he could be here.
''It was a great decision to have Scott on the trip and it's great for him to know that he's always going to be a part of the family.''
They'll hit the UK and Ireland this November.
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