Philadelphia (PHL) to Bilbao (BIO) flight deal from $697 USD in economy class

AAAmerican Airlines

Round Trip•Economy

PHL

Philadelphia International Airport

Philadelphia, United States

BIO

Bilbao Airport

Bilbao, Spain

$1,362 USD

-49%$697 USD

Verified Mar 22, 2026 at 7:07 PM

March 2026

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23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22$1,676 23$854 24$1,082 25$1,690 26$1,013 27$1,253 28$1,045 29$929 30$999 31$890 1$1,260 2$958 3$953 4$1,261 5$967

Extremely Rare Availability

2% of dates checked are available within 10% of the lowest price

Sunday, March 29th, 2026

6 round-trip options

Returning

Fri, Apr 3, 2026•5 Day Trip

$1,408 USD

Google Flights

Returning

Sat, Apr 4, 2026•6 Day Trip

$1,468 USD

Google Flights

Returning

Sun, Apr 5, 2026•7 Day Trip

$1,247 USD

Google Flights

Returning

Mon, Apr 6, 2026•8 Day Trip

$1,144 USD

Google Flights

Returning

Tue, Apr 7, 2026•9 Day Trip

$929 USD

Google Flights

Returning

Sat, Apr 11, 2026•13 Day Trip

$1,326 USD

Google Flights