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

Sunday, December 13th, 2026

7 round-trip options

Returning
Fri, Dec 18, 20265 Day Trip
$1,194 USD
Returning
Sat, Dec 19, 20266 Day Trip
$1,238 USD
Returning
Sun, Dec 20, 20267 Day Trip
$1,171 USD
Returning
Mon, Dec 21, 20268 Day Trip
$1,179 USD
Returning
Wed, Dec 23, 202610 Day Trip
$841 USD
Returning
Thu, Dec 24, 202611 Day Trip
$821 USD
Returning
Sat, Dec 26, 202613 Day Trip
$897 USD