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Bilbao

$312+ Cheap flights from Chicago (CHI) to Bilbao (BIO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BIO
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
1 adult, Economy
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Cheap flight deals from Chicago to Bilbao

Cheapest flights from Chicago to Bilbao
Explore the most affordable flight options available from Chicago to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2026.

This oojo deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:00 pm
ORD
-
BIO
1 stop16h 35m
TAP AIR PORTUGAL
Tue 10/206:50 pm
BIO
-
ORD
1 stop28h 10m
TAP AIR PORTUGAL
Deal found 7/26$579
This Bravofly deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:10 pm
ORD
-
BIO
1 stop31h 55m
Turkish Airlines
Wed 9/166:25 pm
BIO
-
ORD
1 stop22h 15m
Turkish Airlines
Deal found 7/26$678
This Gotogate deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2011:25 am
ORD
-
BIO
1 stop16h 40m
Turkish Airlines
Tue 10/612:05 pm
BIO
-
ORD
1 stop28h 35m
Turkish Airlines
Deal found 7/29$700
This Gotogate deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/109:50 pm
ORD
-
BIO
1 stop17h 05m
Multiple Airlines
Tue 11/177:30 am
BIO
-
ORD
2 stops19h 28m
Multiple Airlines
Deal found 7/30$714
This Mytrip deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:15 pm
ORD
-
BIO
1 stop37h 00m
Turkish Airlines
Tue 11/1711:55 am
BIO
-
ORD
1 stop29h 05m
Turkish Airlines
Deal found 7/30$715
This Turkish Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2011:25 am
ORD
-
BIO
1 stop23h 00m
Turkish Airlines
Thu 10/295:15 pm
BIO
-
ORD
1 stop23h 45m
Turkish Airlines
Deal found 7/30$723
This Mytrip deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:00 pm
ORD
-
BIO
2 stops19h 00m
Multiple Airlines
Tue 10/61:25 pm
BIO
-
ORD
2 stops33h 35m
Multiple Airlines
Deal found 7/30$728
This Delta deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:28 am
MDW
-
BIO
2 stops17h 02m
Delta
Tue 11/176:50 am
BIO
-
MDW
2 stops16h 24m
Delta
Deal found 7/30$740
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1512:30 pm
MDW
-
BIO
2 stops16h 00m
Delta
Fri 12/256:50 am
BIO
-
MDW
2 stops22h 20m
Delta
Deal found 7/28$775
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1510:22 am
MDW
-
BIO
2 stops18h 08m
Delta
Tue 12/227:10 am
BIO
-
MDW
2 stops16h 12m
Delta
Deal found 7/28$782
This Air France deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:01 pm
MDW
-
BIO
2 stops14h 29m
Multiple Airlines
Tue 10/67:10 am
BIO
-
MDW
2 stops16h 09m
Multiple Airlines
Deal found 7/29$803
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:59 am
MDW
-
BIO
2 stops17h 16m
Delta
Thu 10/296:50 am
BIO
-
MDW
2 stops17h 10m
Delta
Deal found 7/29$804

Find flight deals from Chicago to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Bilbao (BIO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 30, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$579
(oojo)

One-way from

$312
(eDestinos)

Popular in

December

Cheapest in

March

Average price

$1,250
Provider with most accurate pricing for Chicago (CHI)-Bilbao flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Bilbao flights.
Search Deals
From Chicago (CHI) to Bilbao
Search Deals
One-way flight from Chicago (CHI) to Bilbao
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($365 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($54 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Bilbao that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2026.
Use the filters below to find and compare flights from Chicago to Bilbao that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 9/14

8:10 pm-5:25 pm

1 stop38h 15m

Bilbao

Thu 9/24

6:25 pm-9:40 am

1 stop22h 15m

$723

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Tue 12/15

10:22 am-11:30 am

2 stops18h 08m

Bilbao

Thu 12/24

6:50 am-4:50 pm

2 stops17h 00m

$775

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Tue 12/15

10:22 am-11:30 am

2 stops18h 08m

Bilbao

Tue 12/22

7:10 am-4:22 pm

2 stops16h 12m

$782

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 10/14

9:40 pm-11:25 pm

1 stop18h 45m

Bilbao

Fri 10/23

6:45 am-7:55 pm

1 stop20h 10m

$787

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 10/7

9:40 pm-5:55 pm

1 stop13h 15m

Bilbao

Fri 10/16

6:45 am-6:30 pm

2 stops18h 45m

$795
Quickest round-trip

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 10/20

10:44 am-9:50 am

2 stops16h 06m

Bilbao

Thu 10/29

6:50 am-3:25 pm

1 stop14h 35m

$795

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 9/30

10:55 am-11:25 pm

2 stops29h 30m

Bilbao

Wed 10/7

6:50 am-2:55 pm

1 stop15h 05m

$796

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Tue 10/20

10:59 am-11:15 am

2 stops17h 16m

Bilbao

Thu 10/29

6:50 am-6:00 pm

2 stops17h 10m

$804

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 9/28

6:50 am-11:25 pm

2 stops33h 35m

Bilbao

Mon 10/5

2:10 pm-12:55 pm

1 stop29h 45m

$816

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Tue 12/15

10:22 am-11:30 am

2 stops18h 08m

Bilbao

Mon 12/28

12:15 pm-4:22 pm

2 stops35h 07m

$824

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 30 resultsSorted by cheapest first
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Compare providers for flights from Chicago to Bilbao

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Bilbao in July.
ProviderPrice AccuracyTrust Score*
OvagoPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Bilbao flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Chicago-Bilbao flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Chicago-Bilbao flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Bilbao flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Bilbao flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Bilbao

What is the cheapest month to book a flight from Chicago to Bilbao?

Currently, March is the cheapest month in which you can book a flight from Chicago to Bilbao (average of $640). Flying from Chicago to Bilbao in July is currently the most expensive (average of $1,291). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Chicago to Bilbao?

Airfare is below average for this route at the moment.
Chicago to Bilbao flights typically cost between $830 and $1,110 in October.
The cheapest round-trip price found within the last 5 days was $579 on TAP AIR PORTUGAL (Oct 9-Oct 20).

Related info for your journey

Find useful and relevant information for your journey from Chicago to Bilbao. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Bilbao from Chicago?

    Bilbao (BIO) is the airport you will fly into if you book a flight from Chicago to Bilbao. You should not have trouble finding flights to Bilbao from Chicago; the airport handles an average of 0 inbound flights from Chicago per day. You should also have plenty of airline options to choose from since 2 airlines have flights to the Bilbao airport from Chicago. It is only a 3.0 mi journey from Bilbao (BIO) to Bilbao’s city center.

  • How long is the flight from Chicago to Bilbao?

    Airlines like Turkish Airlines, Delta, and United Airlines fly from Chicago to Bilbao in about 18h 08m. The time it takes to get you to your destination can typically vary by up to 20h 07m. Chicago and Bilbao are separated by a distance of 4116 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Chicago to Bilbao round-trip?

    Cheapflights users have booked flights from Chicago to Bilbao round-trip from $584. Another airline that can offer you cheap pricing is United Airlines. Lufthansa is 44% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Chicago to Bilbao that include hotel bookings?

    Yes. In addition to deals on Chicago to Bilbao flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Bilbao?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Bilbao.

  • Can I find deals for business class flights from Chicago to Bilbao?

    Yes. Cheapflights offers flight deals from Chicago to Bilbao by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to Bilbao?

    Currently, March is the cheapest month in which you can book a flight from Chicago to Bilbao (average of $640). Flying from Chicago to Bilbao in July is currently the most expensive (average of $1,291). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Chicago to Bilbao

Discover the top 2 airlines that operate flights from Chicago to Bilbao. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$584Average$992FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$699Average$925FlexibilityNo cancel feeOn-time69%

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