Delta Airlines is offering remarkably low round-trip fares from the United States to numerous destinations in Europe. For example, Washington D.C. to Dublin for $317…yes, that is round-trip!
Some other origination cities are Cleveland, Denver, Houston and San Francisco.
Destinations include Amsterdam, Barcelona, Dublin, London, Moscow and many others.
Fares this low will not be around long, and other airlines may briefly match some of them.