Cinven, CPP Investments, EQT, Evercore and Morgan Stanley declined to comment.
Hotelbeds' shareholders had been considering a private sale as an alternative to an IPO, the people said.
Should it list in Spain, Hotelbeds' would be one of the largest IPOs the country has seen in recent years.
Majorca-based Hotelbeds offers travel agencies, airlines and tour operators access to hotel rooms worldwide in what it describes as a "bedbank".
Hotelbeds said it had its best fortnight ever in booking revenue earlier this year, recording a booking per second at peak times.
Persons:
Nacho, Evercore, Morgan Stanley, Cinven, Hotelbeds, Andres Gonzalez, Pablo Mayo, Anousha Sakoui, Nick Zieminski
Organizations:
REUTERS, Reuters, Investments, Pablo Mayo Cerqueiro, Thomson
Locations:
Santa Cruz, Canary, Spain, Madrid, Majorca, London