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Bilbao

$299+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BIO
Apr 28 — May 51
Tue 4/28
Tue 5/5
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 March 29, 2026.

This Rumbo deal was found by Cheapflights users on 3/26. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/511:25 am
ORD
-
BIO
1 stop16h 45m
Turkish Airlines
Tue 4/2112:10 pm
BIO
-
ORD
1 stop28h 30m
Turkish Airlines
Deal found 3/26$554
This Booking.com deal was found by Cheapflights users on 3/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:25 am
ORD
-
BIO
1 stop16h 45m
Turkish Airlines
Thu 10/295:10 pm
BIO
-
ORD
1 stop23h 55m
Turkish Airlines
Deal found 3/28$559
This FlightHub deal was found by Cheapflights users on 3/24. 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.
Tue 10/611:25 am
ORD
-
BIO
1 stop22h 55m
Turkish Airlines
Tue 10/2012:10 pm
BIO
-
ORD
1 stop28h 30m
Turkish Airlines
Deal found 3/24$585
This Turkish Airlines deal was found by Cheapflights users on 3/24. 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.
Wed 10/711:25 am
ORD
-
BIO
1 stop22h 55m
Turkish Airlines
Mon 10/1912:10 pm
BIO
-
ORD
1 stop28h 30m
Turkish Airlines
Deal found 3/24$612
This KAYAK deal was found by Cheapflights users on 3/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:25 am
ORD
-
BIO
1 stop22h 55m
Turkish Airlines
Tue 9/1512:10 pm
BIO
-
ORD
1 stop28h 30m
Turkish Airlines
Deal found 3/27$615
This Booking.com deal was found by Cheapflights users on 3/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:10 pm
ORD
-
BIO
1 stop32h 00m
Turkish Airlines
Sat 10/2412:10 pm
BIO
-
ORD
1 stop38h 15m
Turkish Airlines
Deal found 3/25$620
This FlightHub deal was found by Cheapflights users on 3/27. 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.
Sun 4/1911:25 am
ORD
-
BIO
1 stop16h 45m
Turkish Airlines
Sun 4/266:20 pm
BIO
-
ORD
1 stop22h 20m
Turkish Airlines
Deal found 3/27$621
This FlightHub deal was found by Cheapflights users on 3/24. 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.
Tue 10/611:25 am
ORD
-
BIO
1 stop22h 55m
Turkish Airlines
Mon 10/1912:10 pm
BIO
-
ORD
1 stop28h 30m
Turkish Airlines
Deal found 3/24$625
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:10 pm
ORD
-
BIO
1 stop38h 10m
Turkish Airlines
Sun 4/126:20 pm
BIO
-
ORD
1 stop22h 20m
Turkish Airlines
Deal found 3/29$628
This Trip.com deal was found by Cheapflights users on 3/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:10 pm
ORD
-
BIO
1 stop38h 10m
Turkish Airlines
Sat 4/1112:10 pm
BIO
-
ORD
1 stop28h 30m
Turkish Airlines
Deal found 3/29$638
This FlightHub deal was found by Cheapflights users on 3/24. 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.
Tue 10/611:25 am
ORD
-
BIO
1 stop22h 55m
Turkish Airlines
Sun 10/186:20 pm
BIO
-
ORD
1 stop22h 20m
Turkish Airlines
Deal found 3/24$645
This KAYAK deal was found by Cheapflights users on 3/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:10 pm
ORD
-
BIO
1 stop38h 10m
Turkish Airlines
Mon 10/512:10 pm
BIO
-
ORD
1 stop28h 30m
Turkish Airlines
Deal found 3/27$655

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 March 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$615
(KAYAK)

One-way from

$299
(Kiwi.com)
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

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 March 29, 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

MDW - BIO

MDWBIO

Chicago Midway

Wed 8/12

5:25 pm-4:30 pm

2 stops16h 05m

Bilbao

Wed 8/26

7:10 am-6:31 pm

2 stops18h 21m

$842

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 5/11

1:06 pm-10:25 pm

2 stops26h 19m

Bilbao

Mon 5/18

2:10 pm-12:55 pm

1 stop29h 45m

$887

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 5/11

10:30 am-9:50 am

2 stops16h 20m

Bilbao

Mon 5/18

10:30 am-9:20 pm

2 stops17h 50m

$928

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Mon 5/11

5:10 pm-4:30 pm

2 stops16h 20m

Bilbao

Mon 5/18

7:10 am-5:56 pm

2 stops17h 46m

$932

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 5/18

2:55 pm-10:25 pm

1 stop24h 30m

Bilbao

Tue 6/2

6:50 am-2:55 pm

1 stop15h 05m

$944

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 7/20

5:10 pm-9:50 am

1 stop33h 40m

Bilbao

Thu 7/30

10:30 am-9:52 pm

2 stops18h 22m

$956

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Sun 7/19

9:20 am-9:50 am

2 stops17h 30m

Bilbao

Tue 8/18

7:10 am-6:05 pm

2 stops17h 55m

$959

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 7/22

9:30 am-9:50 am

2 stops17h 20m

Bilbao

Thu 7/30

10:30 am-9:52 pm

2 stops18h 22m

$959

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Thu 7/23

5:10 pm-9:50 am

1 stop33h 40m

Bilbao

Thu 7/30

10:30 am-9:52 pm

2 stops18h 22m

$1,016

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 7/19

3:35 pm-11:10 am

1 stop12h 35m

Bilbao

Mon 7/27

6:50 am-7:27 am

2 stops31h 37m

$1,022

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 34 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 March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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 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.

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, August is the cheapest month in which you can book a flight from Chicago to Bilbao (average of $547). Flying from Chicago to Bilbao in January is currently the most expensive (average of $901). 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.

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 March 29, 2026.
See what other customers who have flown with United Airlines and Lufthansa from Chicago to Bilbao have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,509 reviews

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,509 reviews
United Airlines
7.4
Good
9,509 reviews

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Lufthansa
6.8
Okay
7,872 reviews
United Airlines
7.4
Good
9,509 reviews

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 3 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 United Airlines and Delta fly from Chicago to Bilbao in about 16h 20m. The time it takes to get you to your destination can typically vary by up to 9h 59m. 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. Other airlines that can offer you cheap pricing are Iberia, from $612, and United Airlines, from $699.

  • 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, August is the cheapest month in which you can book a flight from Chicago to Bilbao (average of $547). Flying from Chicago to Bilbao in January is currently the most expensive (average of $901). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Chicago to Bilbao

Discover the top 3 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 March 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$584Average$990FlexibilityNo cancel feeOn-time76%
IberiaCheapest$612Average$778FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$699Average$925FlexibilityNo cancel feeOn-time69%

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