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$424+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BIO
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$591
(FlightHub)

One-way from

$424
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$636
Provider with most accurate pricing for Chicago (CHI)-Bilbao flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Bilbao flights.
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From Chicago (CHI) to Bilbao
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One-way flight from Chicago (CHI) to Bilbao
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High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find 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 February 20, 2025.

This FlightHub deal was found by Cheapflights users on 2/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1111:45 pmORD - BIO
1 stop28h 20mTurkish Airlines
Sun 10/196:25 pmBIO - ORD
1 stop34h 35mTurkish Airlines
Deal found 2/20$545
This Iberia deal was found by Cheapflights users on 2/20. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/15:45 pmORD - BIO
1 stop13h 05mIberia
Mon 11/109:35 pmBIO - ORD
2 stops29h 10mIberia
Deal found 2/20$658
This Mytrip deal was found by Cheapflights users on 2/20. 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 4/67:15 pmORD - BIO
2 stops20h 45mMultiple Airlines
Sun 4/1312:45 pmBIO - ORD
2 stops34h 25mMultiple Airlines
Deal found 2/20$716
This Mytrip deal was found by Cheapflights users on 2/19. 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 3/257:20 amORD - BIO
2 stops23h 30mAir Canada
Sun 3/306:45 amBIO - ORD
2 stops34h 16mAir Canada
Deal found 2/19$735
This United deal was found by Cheapflights users on 2/20. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/11:40 pmORD - BIO
2 stops16h 15mUnited Airlines
Mon 11/101:00 pmBIO - ORD
2 stops30h 51mUnited Airlines
Deal found 2/20$739
This Ovago deal was found by Cheapflights users on 2/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/254:55 pmORD - BIO
1 stop13h 00mLufthansa
Sun 3/306:45 amBIO - ORD
2 stops35h 50mLufthansa
Deal found 2/20$810
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/119:45 amORD - BIO
2 stops15h 45mAmerican Airlines
Sun 10/199:15 amBIO - ORD
1 stop16h 00mAmerican Airlines
Deal found 2/20$874
This KLM deal was found by Cheapflights users on 2/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/293:30 pmORD - BIO
2 stops13h 25mKLM
Mon 5/125:15 pmBIO - ORD
1 stop27h 55mKLM
Deal found 2/20$904
This Delta deal was found by Cheapflights users on 2/20. 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 4/151:16 pmMDW - BIO
2 stops14h 09mDelta
Tue 4/226:50 amBIO - MDW
2 stops18h 30mDelta
Deal found 2/20$918
This StudentUniverse deal was found by Cheapflights users on 2/20. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/102:20 pmORD - BIO
2 stops20h 30mSWISS
Thu 4/248:40 amBIO - ORD
1 stop14h 15mSWISS
Deal found 2/20$933
This FlightHub deal was found by Cheapflights users on 2/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/307:15 pmORD - BIO
1 stop31h 45mScandinavian Airlines
Wed 9/106:50 amBIO - ORD
2 stops40h 20mScandinavian Airlines
Deal found 2/19$997
This Delta deal was found by Cheapflights users on 2/20. 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.
Thu 4/35:00 pmORD - BIO
2 stops16h 40mDelta
Fri 4/116:50 amBIO - ORD
1 stop14h 20mDelta
Deal found 2/20$1,018

Find flights from Chicago to Bilbao within your budget

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 February 20, 2025.

Fly from

Chicago

Fly to

Bilbao

Route

Depart

Return

Price

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Thu 4/10

11:25 am-11:05 am

1 stop16h 40m

Bilbao

Thu 4/24

6:25 pm-9:40 am

1 stop22h 15m

$591

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 4/6

7:15 pm-11:00 pm

2 stops20h 45m

Bilbao

Sun 4/13

12:45 pm-4:10 pm

2 stops34h 25m

$716

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 3/25

7:20 am-12:50 pm

2 stops23h 30m

Bilbao

Sun 3/30

6:45 am-10:01 am

2 stops34h 16m

$735

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 5/5

10:15 pm-11:15 pm

1 stop18h 00m

Bilbao

Mon 5/12

9:35 pm-2:15 pm

1 stop23h 40m

$782

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Fri 3/21

9:50 am-10:55 pm

2 stops31h 05m

Bilbao

Fri 3/28

6:45 am-2:51 pm

2 stops38h 06m

$799

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 3/25

4:55 pm-11:55 am

1 stop13h 00m

Bilbao

Sun 3/30

6:45 am-11:35 am

2 stops35h 50m

$810

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 4/29

3:30 pm-11:55 am

2 stops13h 25m

Bilbao

Mon 5/12

5:15 pm-2:10 pm

1 stop27h 55m

$904

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Tue 4/15

1:16 pm-10:25 am

2 stops14h 09m

Bilbao

Tue 4/22

6:50 am-6:20 pm

2 stops18h 30m

$918

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Thu 4/10

2:20 pm-5:50 pm

2 stops20h 30m

Bilbao

Thu 4/24

8:40 am-3:55 pm

1 stop14h 15m

$933

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Thu 4/3

5:00 pm-4:40 pm

2 stops16h 40m

Bilbao

Fri 4/11

6:50 am-2:10 pm

1 stop14h 20m

$1,018

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 15 results
1
2

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 February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Bilbao flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

Travel insights for flights from Chicago to Bilbao

Get recent, data-driven insights about flights from Chicago to Bilbao including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Chicago to Bilbao (average of $541). Flying from Chicago to Bilbao in June is currently the most expensive (average of $1,178). 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.

What is the cheapest time of day to fly from CHI to BIO?

Find hourly flight availability from Chicago to Bilbao. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 41% on flights from Chicago to Bilbao by exploring options for tickets in the morning.

Rainfall in Bilbao by month

Plan your trip to Bilbao by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bilbao ranges from 2.4 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Bilbao when rainfall is around 2.4 in.

Temperature in Bilbao by month

Plan your trip to Bilbao by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bilbao, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Bilbao

Get insights into the airlines that provide service to Bilbao. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bilbao. Reviews last updated February 20, 2025.
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.5
Good
1,568 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,766 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 5 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.

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

    Cheapflights users have booked flights from Chicago to Bilbao round-trip from $591. Other airlines that can offer you cheap pricing are Air Canada, from $735, and Iberia, from $782. Turkish Airlines is 33% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Chicago to Bilbao one-way?

    One-way options have recently been found by users for as low as $613 on KLM. Other airlines that offer cheap prices include United Airlines from $614 and Delta from $635 one-way.

  • 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, January is the cheapest month in which you can book a flight from Chicago to Bilbao (average of $541). Flying from Chicago to Bilbao in June is currently the most expensive (average of $1,178). 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

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Alternative routes for Chicago to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Bilbao flights
O'Hare Intl to San Sebastian flights
Midway to Bilbao flights
St. Louis to Bilbao flights
St. Louis to San Sebastian flights

Top 5 airlines flying from Chicago to Bilbao

Discover the top 5 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$540Average$585FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$546Average$1,040FlexibilityNo cancel feeOn-time77%
KLMCheapest$567Average$1,075FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$639Average$1,177FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$757Average$1,224FlexibilityNo cancel feeOn-time76%
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