Via God Save the Points and View from the Wing, there is a fantastic airfare sale from the East Coast to Spain in Air France Premium Economy for $633 round trip.
For more details and example dates, see this View from the Wing post or God Save the Points. Secret Flying.has a list of potential dates and city pairs, though more are likely possible. For example, Gary at View from the Wing reports finding dates to Helsinki as well.
Even more interesting, you may be able to upgrade these tickets to business class using just 15,000 Delta miles each way. See this post at Milecards.com for more detail.