BIO to ORD from $344 in economy – flightdeals.net

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American Airlines

AAAmerican Airlines

Finnair

British Airways

BABritish Airways

Iberia Airlines

IBIberia Airlines

One Way•Economy

Bilbao Airport

O'Hare International Airport

Chicago, United States

$619 USD

-44%$344 USD

Verified 1 day ago

September 2026

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31$673 1$673 2$673 3$673 4$697 5$697 6$697 7$673 8$673 9$673 10$673 11$697 12$702 13$511 14$389 15$384 16$378 17$378 18$402 19$445 20$434 21$378 22$384 23$378 24$378 25$408 26$439 27$702 28$384 29$389 30$378 1$487 2$511 3$612 4$607

Fair Availability

21% of dates checked are available within 10% of the lowest price

Wednesday, September 23rd, 2026

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