With autumn fares to some places in Europe running as much as $1,000, here’s a good fare to Madrid (but with a catch): $685 round trip, including all taxes and fees, from
The fare is subject to availability and is valid for travel from Nov. 17-March 13, excluding peak holiday periods. You must stay over a Saturday night.
Here's the catch: Flights connect by way of Moscow, so your journey will take longer.
Info: Aeroflot, (888) 340-6400.