Lola Travel, a trip-booking startup from Kayak cofounder Paul English, has raised another $15 million and could add even more investment cash as it develops a second version of its mobile app.

The new investment was led by Cambridge-based venture firm CRV alongside previous venture investors General Catalyst and Accel, English said in a blog post. A regulatory filing indicates Lola Travel is trying to raise another $10 million if additional investors come on board.

The company offers a free app that connects users with personal travel agents who can help them book flights, hotels, and other travel necessities. Customers can be charged fees for some transactions, such as a $25 assessment for booking a flight.


English, the company’s chief executive, said Lola is preparing a new version of the app for this spring featuring hotel recommendations aided by artificial intelligence software. The startup previously raised $19.7 million from venture investors.

Curt Woodward can be reached at curt.woodward@globe.com. Follow him on Twitter @curtwoodward.