Travelopia is the new name for the umbrella group of 50 specialist brands, including Hayes & Jarvis, Exodus, Travelmood, Citalia and Jetsave.
Tui put Travelopia, which employs around 4,000 people, on the market in September with the intention of selling the business as a single entity.
The deal is potentially worth €500-600 million.
Chief executive Fritz Joussen told reporters today that Travelopia was attracting a lot of interest.
"We now have indicative offers in, and in the first-half of the financial year we will be hopefully closing the transaction," he said.
Tui’s first half runs until the end of March.