UK travel startup Triptease has raised $9 million (£7.2 million) in a Series B round led by BGF Ventures
Existing backers Notion Capital and Episode 1 Ventures also participated.
Triptease is headquartered in London and will use the cash to open its first Asian office in Singapore. It also has offices in New York. It will also hire more staff.
The company makes it easier for hotels to persuade prospective guests to book rooms directly.
Triptease adds "a few lines of code" to a hotel's existing booking engine which, when a guest thinks about booking a room, compares the hotel's direct booking rates against Expedia.com, Booking.com, or Hotels.com rates, for example.
Triptease also tracks what works and what doesn't, so if a guest needs more persuading, it can throw in sweeteners (like free cocktails) that have worked for other hotels.
The idea is to cut out online travel agents, which can charge up to 20% commission as middleman, according to Triptease.
The company said it's working with more than 17,000 hotels and that delivers $1 billion (£800 million) in booking revenues per year.