Chicago (ORD) to Bilbao (BIO) flight deal in economy from $735
$969 USD
-24%$735 USD
Verified 1 day agoJanuary 2027
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Fair Availability
29% of dates checked are available within 10% of the lowest price
Monday, January 4th, 2027
2 round-trip options
Returning
Thu, Jan 14, 2027•10 Day Trip
$837 USD
Returning
Fri, Jan 15, 2027•11 Day Trip
$755 USD