$295 Cheap Flights from Chicago (ORD) to Bilbao (BIO)

View $295 flight on Mon, Aug 11, 2025Opens in a new window

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to Bilbao Airport (BIO)

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Cheap Flights from Chicago to Bilbao (ORD-BIO)

Prices were available within the past 7 days and start at $295 for one-way flights and $464 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Thu, Jan 22 - Fri, Feb 6
ORD
Chicago
BIO
Bilbao
$464 Roundtrip, found 1 hour ago
$464
Roundtrip
found 1 hour ago
Select Scandinavian Airlines flight, departing Thu, Jan 22 from Chicago to Bilbao, returning Fri, Feb 6, priced at $464 found 1 hour ago
TAP Portugal
Sun, Nov 9 - Tue, Nov 18
ORD
Chicago
BIO
Bilbao
$472 Roundtrip, found 1 day ago
$472
Roundtrip
found 1 day ago
Select TAP Portugal flight, departing Sun, Nov 9 from Chicago to Bilbao, returning Tue, Nov 18, priced at $472 found 1 day ago
TAP Portugal
Mon, Aug 11 - Wed, Aug 27
ORD
Chicago
BIO
Bilbao
$479 Roundtrip, found 19 hours ago
$479
Roundtrip
found 19 hours ago
Select TAP Portugal flight, departing Mon, Aug 11 from Chicago to Bilbao, returning Wed, Aug 27, priced at $479 found 19 hours ago
Scandinavian Airlines
Thu, Nov 27 - Fri, Dec 12
ORD
Chicago
BIO
Bilbao
$494 Roundtrip, found 1 day ago
$494
Roundtrip
found 1 day ago
Select Scandinavian Airlines flight, departing Thu, Nov 27 from Chicago to Bilbao, returning Fri, Dec 12, priced at $494 found 1 day ago
Iberia
Tue, Oct 28 - Fri, Nov 7
ORD
Chicago
BIO
Bilbao
$590 Roundtrip, found 6 days ago
$590
Roundtrip
found 6 days ago
Select Iberia flight, departing Tue, Oct 28 from Chicago to Bilbao, returning Fri, Nov 7, priced at $590 found 6 days ago
British Airways
Tue, Oct 28 - Fri, Nov 7
ORD
Chicago
BIO
Bilbao
$590 Roundtrip, found 6 days ago
$590
Roundtrip
found 6 days ago
Select British Airways flight, departing Tue, Oct 28 from Chicago to Bilbao, returning Fri, Nov 7, priced at $590 found 6 days ago
United
Sun, Nov 9 - Tue, Nov 18
ORD
Chicago
BIO
Bilbao
$591 Roundtrip, found 1 day ago
$591
Roundtrip
found 1 day ago
Select United flight, departing Sun, Nov 9 from Chicago to Bilbao, returning Tue, Nov 18, priced at $591 found 1 day ago
Lufthansa
Tue, Oct 7 - Fri, Oct 17
ORD
Chicago
BIO
Bilbao
$591 Roundtrip, found 1 day ago
$591
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Tue, Oct 7 from Chicago to Bilbao, returning Fri, Oct 17, priced at $591 found 1 day ago
Air Canada
Tue, Feb 10 - Tue, Feb 17
ORD
Chicago
BIO
Bilbao
$604 Roundtrip, found 1 day ago
$604
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, Feb 10 from Chicago to Bilbao, returning Tue, Feb 17, priced at $604 found 1 day ago
Delta
Mon, Jan 26 - Tue, Feb 3
ORD
Chicago
BIO
Bilbao
$605 Roundtrip, found 1 hour ago
$605
Roundtrip
found 1 hour ago
Select Delta flight, departing Mon, Jan 26 from Chicago to Bilbao, returning Tue, Feb 3, priced at $605 found 1 hour ago

Alternative airports near Bilbao

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Bilbao Airport BIO. Cheapest and Closest option available. Average driving time to city center is 13 minutes. Flights from $881
BIO
Bilbao Airport
CheapestClosest
Average driving time to city center13 min
Flights from $881
Flights from Chicago (ORD) to Bilbao (BIO)
Origin airport
O'Hare Intl.
Destination airport
Bilbao
Airlines serving
Aer Lingus, Air Canada, Air Europa, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$463
Distance
4118 mi

Chicago to Bilbao Flights

The cheapest times to fly from Chicago to Bilbao

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Chicago to Bilbao are during the month of January. You can find some of the cheapest flights from Chicago to Bilbao with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to Bilbao

Sunday is one of the best days to book for cheap flights from Chicago to Bilbao: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Chicago to Bilbao

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Chicago to Bilbao in 2025. You can also book with separate airlines for your outbound and return journeys, from $295 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Chicago to Bilbao flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Chicago to Bilbao airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to Bilbao Airport (BIO) cost?
Discover the latest flight deals from ORD to BIO by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ORD to BIO?
The cheapest flights from ORD to BIO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ORD to BIO?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ORD to BIO. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from O'Hare Intl. Airport (ORD) to Bilbao Airport (BIO)?
There are no daily nonstop flights from O'Hare Intl. Airport (ORD) to Bilbao Airport (BIO). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from ORD to BIO?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change depending on a number of factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from O'Hare Intl. Airport (ORD) to Bilbao Airport (BIO)?
To land at Bilbao Airport (BIO) without delays, book a flight that leaves O'Hare Intl. Airport (ORD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from O'Hare Intl. Airport (ORD) to Bilbao Airport (BIO) last-minute?
Booking your flight from ORD to BIO right before your trip is typically more expensive. However, if you're flexible with your departure times and dates, you could score a cheap last-minute fare.
Is it cheaper to book an ORD to BIO flight and hotel package?
Compared with arranging flights and hotels separately, booking an ORD to BIO flight and hotel package with Expedia could result in significant savings. What's more, managing everything in one place will take the stress out of travel planning. Just secure your flights and choose from our extensive range of stays, then personalize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to Bilbao Airport (BIO)?
Usually, it's possible to reschedule or cancel your ORD to BIO flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.