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

Tuesday, December 1st, 2026

7 round-trip options

Returning
Sun, Dec 6, 20265 Day Trip
$938 USD
Returning
Mon, Dec 7, 20266 Day Trip
$938 USD
Returning
Tue, Dec 8, 20267 Day Trip
$778 USD
Returning
Wed, Dec 9, 20268 Day Trip
$778 USD
Returning
Fri, Dec 11, 202610 Day Trip
$778 USD
Returning
Sat, Dec 12, 202611 Day Trip
$898 USD
Returning
Mon, Dec 14, 202613 Day Trip
$898 USD