American Airlines has joined Delta and United Airlines in a fare war to Europe.
Example: SFO to Barcelona for $603 round-trip. Numerous cities in Europe are available at cut-rate fares.
You can fly November 2016 to March 2017 from San Francisco to Europe at these low low fares.
Buy your ticket quickly, before peace breaks out and these low fares fly away. You generally have 24 hours to change your mind after you purchase an airline ticket in the United States.