American Airlines and Delta Air Lines are attacking each other’s fares, bringing back the $400+ flights from U.S. to Western Europe. Travel November 2017 – May 2018 excluding major holidays.
Some routes/dates will be cheapest by booking direct, but some will have better fares through Momondo or Priceline. Click through links below for full booking details.
DELTA AIRLINES (KLM/AIR FRANCE)
$575 RT: San Diego to London (The Fare Deal)
AMERICAN AIRLINES (IBERIA)
$401 RT: Atlanta to Dublin