Jarrar was born and raised in Baghdad, and is half Iraqi and half Palestinian. He holds a degree in architecture from the University of Jordan. While attending university he met the fellow architecture student later known as Salam Pax.
Jarrar first gained prominence as the person referenced in the title of the blog "Where is Raed?", written and maintained by Salam Pax, to which Jarrar himself made infrequent posts. This blog received widespread media coverage during the 2003 invasion of Iraq and afterwards.
Jarrar also founded Emaar, an NGO that carried out humanitarian work in southern Iraq.
Jarrar later gained attention after an incident on August 12, 2006 at John F. Kennedy International Airport. Raed had attempted to board a JetBlue flight from New York City to Oakland, California while wearing a black T-shirt with the text "We will not be silent" in English and Arabic. The shirts were produced by The Critical Voice, an anti-war group; the text was inspired by the German phrase Wir schweigen nicht ("We will not be silent"), the slogan of the White Rose, the "subversive" German antifascist anti-nazi organization. As Jarrar himself related:
After a lengthy exchange with airport staff, Jarrar was persuaded to wear another T-shirt bought for him by JetBlue staff from an airport gift shop.
On August 13, 2007, the American Civil Liberties Union filed a lawsuit against JetBlue alleging illegal discrimination against Jarrar.