British Airways is having a winter Europe sale with flights from $190 each way. 9 cities are available: Amsterdam, Athens, Frankfurt, London, Madrid, Paris, Prague, Rome, and Vienna. Rates are based on travel from October 22, 2009 – March 28, 2010, but must be booked by September  24, 2009.

The best deals are from the west coast. For example: Seattle to Madrid (SEA > MAD) is $221 each way, February 10 – 21, 2010 $578.16 including taxes.  [via Travelzoo]