Apple began taking orders for its redesigned thin-and-light iPad Air in the United States, Canada, Europe and several Asia Pacific countries. The current shipping times of the iPad Air is 24 hours. The iPad Air is available in space gray/black and white/silver and can be purchased from $499 for the 16GB Wi-Fi only model or $629 for the 16GB Wi-Fi + Cellular model.

You can purchase an iPad Air via the online Apple Store or the Apple Store iOS app. Apple is also accepting Personal Pickup requests in the U.S., allowing customers to reserve an iPad Air online for pickup at a local retail location.

You could also buy the iPad Air in the USA for $479 ($20 discount) from stores such as Walmart and Best Buy. In Europe the iPad Air is available in Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Macedonia, Montenegro, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the UK.

Source [macrumors]