Flying Blue, the loyalty program offered by Air France & KLM, is offering 50% off reward tickets on select routes through April. Economy tickets between Europe and Houston, Washington, Vancouver, Chicago and Atlanta (and vice versa) are only 25,000 miles round trip. Routes with premium economy are only 29,000, and Business Class (Affaires) are just 50,000 miles (Toronto is also available for business class travel).
Starwood points are convertible to Flying Blue points at 1:1, with the regular 5,000 point bonus, so that spring trip to France can run you just 20,000 Starwood points in coach, or 40,000 in Business. Solid deal.