Delta, Virgin Atlantic, and Air France have round-trip flights from Dallas (DFW) to Athens (ATH) for $531-$544 with a connection. Flights September, October, November, March, and April. Departures on Monday, Tuesday, Wednesday, and Sunday. 7-day minimum stay required.
There are slightly cheaper fares (about $522-ish) available, but we’ve filtered those out of our list due to those having really bad connection times, or multiple stops.