Philadelphia (PHL) to Bilbao (BIO) flight deal in economy from $351

AAAmerican Airlines

One Way•Economy

PHL

Philadelphia International Airport

Philadelphia, United States

BIO

Bilbao Airport

Bilbao, Spain

$652 USD

-46%$351 USD

Verified 14 days ago

December 2026

Today

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30$3511$6502$6543$1,3764$9945$4056$9157$1,2768$6549$65410$1,09811$72212$40513$65014$81315$70916$70917$1,43618$1,10219$95220$1,03221$87822$87823$87824$40125$93726$70427$65028$35529$65430$65031$4011$9942$7043$650

Fair Availability

22% of dates checked are available within 10% of the lowest price

Saturday, December 19th, 2026

Outbound Flights

13h 55m·2 stops

$952 USD

PHLDec 19 12:35

→

BOSDec 19 13:56

AA 1848Airbus A319

3h 4m layover

BOSDec 19 17:00

→

MADDec 20 06:00

IB 348Airbus A321neo

1h 25m layover

MADDec 20 07:25

→

BIODec 20 08:30

IB 429Airbus A320

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