AirHint found the following cheapest return flights from Chicago (MDW) to Athens (ATH) in May 2026 (see full year).

Return flights

12 May - 19 May	Delta
10 May - 17 May	Delta
13 May - 20 May	Virgin Atlantic
07 May - 19 May	Virgin Atlantic
11 May - 18 May	Virgin Atlantic
16 May - 23 May	Delta
01 May - 03 Jun	Delta
18 May - 25 May	Virgin Atlantic
22 May - 25 May	Porter Airlines (Canada) Ltd
14 May - 17 May	Air France
25 May - 02 Jun	Delta
26 May - 03 Jun	Delta
27 May - 04 Jun	Delta
25 May - 01 Jun	Delta
24 May - 01 Jun	Delta
26 May - 08 Jun	Delta
26 May - 07 Jun	Delta
06 May - 13 May	KLM
28 May - 05 Jun	Virgin Atlantic
22 May - 02 Jun	Virgin Atlantic

Also check the deals for one-way flights from Chicago to Athens in May.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Chicago to Athens in May from $909

Return flights