PDX to BIO from $730 in economy – flightdeals.net

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Air France

Delta Air Lines

DLDelta Air Lines

KLM

Round Trip•Economy

Portland International Airport

Portland, United States

Bilbao Airport

$1,043 USD

-30%$730 USD

Verified 13 days ago

September 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31$997 1$820 2$933 3$880 4$998 5$885 6$834 7$925 8$820 9$825 10$880 11$885 12$1,003 13$837 14$820 15$880 16$825 17$850 18$911 19$840 20$790 21$807 22$790 23$790 24$840 25$840 26$890 27$800 28$790 29$840 30$795 1$840 2$854 3$780 4$730

Limited Availability

19% of dates checked are available within 10% of the lowest price

Tuesday, September 22nd, 2026

2 round-trip options

Returning

Mon, Sep 28, 2026•6 Day Trip

$790 USD

Returning

Sat, Oct 3, 2026•11 Day Trip

$840 USD