Best4Travel, part of Wecanbookit Ireland, is based in Dunshaughlin, County Meath, and operates 10 shops across the country.
It has now added Just Split branches in Rathfarnham, Ballyfermot, Kilnamanagh, Limerick and Portlaoise as part of an ongoing expansion programme.
Just Split was set up in 2005 by Jim Vaughan.
Best4Travel managing director Jeff Collins said: “We are incredibly proud to welcome Just Split into the Best4Travel family. Jim Vaughan has built an exceptional business and contributed enormously to the Irish travel industry over the years.
"By adding Just Split to the Best4Travel Group, this will make us stronger going into 2026 and beyond. We look forward to embracing and developing the new teams from Just Split and welcoming them into the Best4Travel Family. This acquisition plays a key role in achieving our ambitious plans for the coming years.”
Vaughan added: “I feel the time is right to hand over Just Split, and I know the business will be in very good hands with Jeff and the team at Best4Travel. This is a fantastic industry and I want to sincerely thank my amazing team for everything we have achieved together over the years.”
Best4Travel is also developing two new websites plus an in-house operations system known as “Bestie”. Its first AI development goes live in December.