Cheapest return flights from Chicago to Athens in May from $604

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

Return flights

05 May - 12 May Frontier Airlines
07 May - 17 May Frontier Airlines
26 May - 05 Jun Porter Airlines (Canada) Ltd
31 May - 14 Jun Porter Airlines (Canada) Ltd
14 May - 29 May Porter Airlines (Canada) Ltd
22 May - 30 May Porter Airlines (Canada) Ltd
05 May - 13 May KLM
15 May - 30 May Porter Airlines (Canada) Ltd
22 May - 31 May Porter Airlines (Canada) Ltd
16 May - 30 May Frontier Airlines
21 May - 31 May Porter Airlines (Canada) Ltd
21 May - 25 May Porter Airlines (Canada) Ltd
30 May - 14 Jun Frontier Airlines
24 May - 19 Jun Virgin Atlantic
19 May - 02 Jun Air France

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

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