HotelTonight is today giving fly-by-the-seat-of-their-pants types 10 more reasons to book staycations or take last-minute trips. The mobile-only hotel-booking service is now offering people same-night hotel steals in five more U.K. cities and five new U.S. markets.

Launched in January 2011, HotelTonight helps people with iPhones, iPads, and Android devices book same-night stays in fancy, fashionable, or frugal lodgings. The apps have been downloaded more than 3 million times to date.

Each day at noon local time, HotelTonight users receive three hotel deals, offered at different price points, available that night. All prices are promised to be dramatically marked-down rates, as the startup works directly with its hotel partners to secure discounted pricing for empty inventory.

Starting today, the mobile-only service has hotel options in the U.K. cities of Birmingham, Edinburgh, Glasgow, and Liverpool and to folks wanting to plop their heads down on comfy pillows in the U.S. cities of St. Louis, Charlotte, Pittsburgh, and Nashville. Come early September, Manchester, U.K. and Salt Lake City will also be HotelTonight destinations. In total, HotelTonight now covers 50 markets.

The 10 new destinations are part of a carefully crafted international expansion plan fueled by¬†$23 million in recent funding. In June, the company opened a small office in London and made its mobile booking app available to U.K. users in London for the first time. The single city U.K. launch, however, was just a tiny preview of the startup’s greater, world-takeover ambitions.

“Since our funding news and London launch in June, we’ve put a ton of energy and resources behind expanding HotelTonight overseas and stateside,” HotelTonight CEO Sam Shank told VentureBeat. “The team here works tirelessly to secure amazing deals every day and to continue to bring the HotelTonight experience to users across the globe.”

HotelTonight has raised more than $35 million in funding to date. The startup has offices in San Francisco and London and employs a 75 people.

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