Portland (PDX) to Bilbao (BIO) flight deal in economy from $730
$1,043 USD
-30%$730 USD
Verified 13 days agoOctober 2026
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Limited Availability
19% of dates checked are available within 10% of the lowest price
Monday, October 12th, 2026
2 round-trip options
Returning
Sun, Oct 18, 2026•6 Day Trip
$785 USD
Returning
Fri, Oct 23, 2026•11 Day Trip
$735 USD