Founder Wendy Wu filled envelops with a £50 note for each of the company’s employees following the Chinese custom.
Wu said: “I wanted to thank every member of the team for their contribution to our record start to the year.
“Our entire team work so hard and long hours, so there’s no better celebration than a big thank you with a red envelope for everyone.”
Red envelopes containing money are traditionally given out to friends and relatives at special occasions in China.
The celebrations took place at Wendy Wu’s London offices as the tour operator marked the launching of its new website.
Chief executive Joe Karbo said: “This is the first step of our online transformation. Our technology team are now concentrating on the more important task of our agent booking platform, which will go live in one month.”