Kilroy is a European youth travel agent, based in Copenhagen with branches around Europe, mostly in Scandinavia. The company claim to specialize in "youthful" travel, such as custom-made trips to the Amazonas. The prices are slightly lower than other travelagents, provided that you're under 26 years of age or a legimate ISIC card carrier.

One of the advantages with Kilroy is the ability to change your travel route en route. The agency has deals with other travel agencies around to world so you can change the ticket there. The only hard thing is to find which travel agent represents Kilroy (Took me one week once).