Ireland-based The Travel Suite will offer luxury holidays, cruises, group travel and premium class flights to global destinations.
"Launching The Travel Suite has been a vision of mine for a number of years," McKenna said. "I have been in the travel industry for over 30 years and love to share my incredible memories and passion for travel with everyone.
"I am extremely conscious that people work hard and need to know that their holiday is going to be everything they expected, and more."
Also involved in launching the new brand is industry veteran Lorraine Quinn, who said the new company will offer a "concierge service" to its clients.
"We are extremely excited to have an amazing experienced team of specialists who have travelled extensively around the world and who have the in-depth knowledge to make your next holiday an exceptional one," she added.