Porto (OPO) to Chicago (ORD) flight deal in economy from $615

Sunday, December 6th, 2026

7 round-trip options

Returning
Fri, Dec 11, 20265 Day Trip
$1,015 USD
Returning
Sat, Dec 12, 20266 Day Trip
$683 USD
Returning
Sun, Dec 13, 20267 Day Trip
$683 USD
Returning
Mon, Dec 14, 20268 Day Trip
$683 USD
Returning
Wed, Dec 16, 202610 Day Trip
$972 USD
Returning
Thu, Dec 17, 202611 Day Trip
$972 USD
Returning
Sat, Dec 19, 202613 Day Trip
$1,141 USD