Portland (PDX) to Bilbao (BIO) flight deal in economy from $730
$1,043 USD
-30%$730 USD
Verified 13 days agoAugust 2026
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Limited Availability
19% of dates checked are available within 10% of the lowest price
Monday, August 10th, 2026
7 round-trip options
Returning
Sat, Aug 15, 2026•5 Day Trip
$1,703 USD
Returning
Sun, Aug 16, 2026•6 Day Trip
$1,199 USD
Returning
Tue, Aug 18, 2026•8 Day Trip
$891 USD
Returning
Wed, Aug 19, 2026•9 Day Trip
$842 USD
Returning
Thu, Aug 20, 2026•10 Day Trip
$1,194 USD
Returning
Sun, Aug 23, 2026•13 Day Trip
$1,450 USD
Returning
Mon, Aug 24, 2026•14 Day Trip
$1,254 USD