Have you heard of yet? I’m always scouting for affordable flights, like every savvy traveler these days, and recently came across this Copenhagen-based aggregator (U.S. searches make up one-third of its market).

Whenever I encounter a site like this, I’m skeptical—how can this site really be better than the rest?—but it’s hard to argue with Momondo’s credentials. It claims to search more than 750 airfare sources (U.S. competitor Kayak covers roughly half that), including low-cost carriers, consolidators, aggregators, fledgling and major airlines. And when traveler advocate Arthur Frommer tested the top American agreegators—including Kayak, SideStep, and FareChase—only to find that the European Momondo consistently found fares that were 20 to 40 percent less.

So I decided to try it out for myself while planning a last-minute ski trip to Breckenridge. The lowest roundtrip fare from JFK to Denver International was an unsurprising $254 on American, but I was impressed by the sheer volume of quotes—three long pages worth—as well as the speed at which they were delivered. I also loved the sidebar, which sorted fares by type: Travel Agency (Expedia, CheapOAir), Low-Cost Airline (AirTran, JetBlue), and Classical Airline (American, Delta), to name just a few. Of course, you can’t purchase tickets on the site, but linking to the supplier was easy.

Momondo also allows you to search for car rentals, high-speed trains, and hotels (the latter of which is relaunching in April). Next up: fare predictive algorithms.

My verdict? I’d like to try it out a few more times, but it’s now at the top of my list of go-to search engines.

Bree Sposato is an assistant editor at Travel + Leisure