Delta and Air France have “Basic Economy” round-trip flights from Chicago (ORD) to Athens (ATH) for $537 with a connection. Flights November to March. 6-day minimum stay required.
Note: Carry-on bag and personal item are allowed for free, but checked-bags will cost +$60 each-way. Upgrades into “Regular Economy” are available for +$50 more each-way.
Note: Priceline has “Express Deals” on some of these dates for $480, and those hidden fares seem to allow for free carry-on, and seat selection.
Note: For “Priceline Express” deals, the actual airline and flight is hidden until after purchase. No 24-hour free cancellation. Guaranteed to be on a major airline. Select the fare that has 0-1 connections and a connection time of less than 4-hours. Also select the fare that says “free carry-on bag, and seat selection.”
Note: We think this hidden fare is on United / Star Alliance carriers.