In search of flight savings and more choice, Kayak’s search results will now sometimes include Hacker Fares — pairs of one-way flights from different airlines to create a discounted roundtrip.
Although these flights will be presented as a roundtrip, these Hacker Fares aren’t interline fares — each leg must be booked separately on the airline or online travel agency website.
Hacker Fares were rolled out today on Kayak.com only for domestic and international fares.
Read full story at: http://www.tnooz.com/2011/08/23/news/kayak-pairs-one-way-flights-into-hacker-fares/