This flight comparison app can help you find cheaper rates than some of your favorite online travel agencies.
What it does: It's a search engine that finds airfares at 20 airlines, 23 online ticket agencies, such as Airtickets.com, Ebookers, Vayama and BudgetAir, and 40 travel agencies around with world, without a commission.
What's hot: Not only did Jetradar find cheaper fares when I tested it against Kayak (one way, San Diego to Charleston), Travelocity (round trip, San Diego to London
What's not: There were a few
Worth it: Absolutely. See for yourself by testing it against your favorite flight search engine.