I saw today on www.vayama.com that they had flights from Washington DC - Tangier or Casablanca for $275+tax. There are restrictions on it and I didn't have a lot of time to really play with the dates to get that fare. But if you have a flexible schedule and play with the dates you should be able to get that price. I did see even on Iberia regular site that January tickets from DC-Casa were around $550 so still quite reasonable. Check it out!