Terms of the acquisition have not been disclosed and it is expected to close over the course of the next 15 days.
The eWings platform allows business to search and book flights, handle check-in procedures and access negotiated fares with partner airlines.
It takes content from more than 700 airlines worldwide and also includes rail fares from German operator Deutsche Bahn.
HRG chief information officer Bill Brindle says:
“eWings provides us with a developed solution as well as some great new technology which is highly complementary to our own proprietary technology and will fit perfectly with our platform.
“In addition to being an exciting new approach to fast and easy business travel, eWings gives us a speed to market advantage in the small business space and means we can accelerate our new distribution strategy across the whole market.”