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

Wednesday, December 9th, 2026

7 round-trip options

Returning
Mon, Dec 14, 20265 Day Trip
$780 USD
Returning
Tue, Dec 15, 20266 Day Trip
$780 USD
Returning
Wed, Dec 16, 20267 Day Trip
$1,102 USD
Returning
Thu, Dec 17, 20268 Day Trip
$1,056 USD
Returning
Sat, Dec 19, 202610 Day Trip
$1,238 USD
Returning
Sun, Dec 20, 202611 Day Trip
$1,165 USD
Returning
Tue, Dec 22, 202613 Day Trip
$968 USD