ATH to ORD from $725 in economy – flightdeals.net

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Swiss International Air Lines

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United Airlines

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Round Trip•Economy

Athens International Airport

O'Hare International Airport

Chicago, United States

$771 USD

-6%$725 USD

Verified 13 days ago

September 2026

Mon

Tue

Wed

Thu

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Sun

31$725 1$725 2$725 3$726 4$726 5$725 6$726 7$726 8$733 9$725 10$725 11$725 12$741 13$741 14$735 15$733 16$725 17$733 18$725 19$733 20$773 21$733 22$733 23$725 24$725 25$733 26$781 27$828 28$733 29$733 30$725 1$725 2$733 3$741 4$773

Great Availability

81% of dates checked are available within 10% of the lowest price

Thursday, September 17th, 2026

3 round-trip options

Returning

Thu, Sep 24, 2026•7 Day Trip

$738 USD

Returning

Sat, Sep 26, 2026•9 Day Trip

$733 USD

Returning

Tue, Sep 29, 2026•12 Day Trip

$733 USD