Chicago (ORD) to Porto (OPO) flight deal in economy from $767

Saturday, August 1st, 2026

10 round-trip options

Returning
Thu, Aug 6, 20265 Day Trip
$1,642 USD
Returning
Fri, Aug 7, 20266 Day Trip
$1,412 USD
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Sat, Aug 8, 20267 Day Trip
$1,349 USD
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Sun, Aug 9, 20268 Day Trip
$1,387 USD
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Mon, Aug 10, 20269 Day Trip
$1,199 USD
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Tue, Aug 11, 202610 Day Trip
$1,220 USD
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Wed, Aug 12, 202611 Day Trip
$1,317 USD
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Thu, Aug 13, 202612 Day Trip
$1,626 USD
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Fri, Aug 14, 202613 Day Trip
$1,464 USD
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Sat, Aug 15, 202614 Day Trip
$1,752 USD