BIO to ORD from $336 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

$648 USD

-48%$336 USD

Verified about 17 hours ago

September 2026

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31$376 1$376 2$376 3$376 4$401 5$517 6$629 7$388 8$376 9$376 10$399 11$469 12$602 13$705 14$382 15$382 16$376 17$376 18$401 19$412 20$401 21$382 22$382 23$376 24$376 25$401 26$444 27$433 28$388 29$382 30$376 1$391 2$401 3$511 4$420

Rare Availability

7% of dates checked are available within 10% of the lowest price

Friday, September 11th, 2026

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