The BlueSky iTour system will replace the existing platform operated by Anite and follows a four month consultation process kick-started late last year after Primera Travel Group bought Budget Travel.
The deal to install the platform, worth around Euro 1.5 million, was signed at the Travel Technology Show last week.
Budget Travel currently has a 34% market share in the Republic of Ireland and operates 34 retail outlets around the country.
Daði Ingólfsson, IT director for Primera, said: “What was in place when Primera acquired Budget needed to be upgraded.
“We have great plans for Budget and we needed to bring in a brand new, robust and user friendly system to take the business forward.”
Primera bought Budget Travel from TUI last year when concerns were raised about a potential competitive advantage in the Republic of Ireland when Thomson merged with First Choice.