Other participants included new investors PAR Capital Ventures, Buddy Media-founder Mike Lazerow, Seth Brody, David Sandberg and Porter Gale.
Previous backers High Peaks Venture Partners, Contour Venture Partners and Vocap Investment Partners also returned in the latest round.
The company says it will use the latest injection to speed up development and marketing of its RouteHappy Hub product, a platform which allows airlines to organise their ancillary inventory for wider distribution via an API to third parties such as intermediaries.
