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
07 May - 14 May	Delta
11 May - 18 May	KLM
09 May - 16 May	Delta
18 May - 25 May	Delta
17 May - 26 May	Air France
19 May - 26 May	Air France
10 May - 26 May	Delta
26 May - 05 Jun	Air France
26 May - 02 Jun	Air France
01 May - 01 Jun	Delta
18 May - 31 May	Delta
08 May - 15 May	Air France
25 May - 06 Jun	Air France
26 May - 06 Jun	Air France
24 May - 06 Jun	Delta
28 May - 09 Jun	Delta
28 May - 10 Jun	Delta
28 May - 11 Jun	Delta
31 May - 10 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 540€

Return flights