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$354+ 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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BIO
ene. 26 — feb. 21
dom. 1/26
dom. 2/2
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 enero 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$546
(FlightHub)

One-way from

$354
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$583
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, 4% 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 January 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 enero 21, 2025.

This FlightHub deal was found by Cheapflights users on 1/20. 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.
mié. 2/1211:55 amORD - BIO
1 stop21h 30mTurkish Airlines
mié. 2/195:20 pmBIO - ORD
1 stop23h 50mTurkish Airlines
Deal found 1/20$546
This Cheapflightsfares deal was found by Cheapflights users on 1/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/184:45 pmORD - BIO
1 stop17h 10mIberia
mar. 2/256:45 amBIO - ORD
1 stop14h 45mIberia
Deal found 1/19$560
This Gotogate deal was found by Cheapflights users on 1/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/42:05 pmORD - BIO
2 stops14h 50mAir Canada
mar. 3/116:45 amBIO - ORD
2 stops18h 52mAir Canada
Deal found 1/19$565
This Booking.com deal was found by Cheapflights users on 1/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/57:05 pmORD - BIO
1 stop19h 10mMultiple Airlines
mié. 3/121:10 pmBIO - ORD
2 stops25h 51mMultiple Airlines
Deal found 1/20$570
This United deal was found by Cheapflights users on 1/21. 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.
mié. 2/129:25 pmORD - BIO
1 stop13h 40mUnited Airlines
mié. 2/191:10 pmBIO - ORD
2 stops26h 51mUnited Airlines
Deal found 1/21$599
This Delta deal was found by Cheapflights users on 1/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/49:33 amMDW - BIO
2 stops18h 57mDelta
mar. 3/116:50 amBIO - MDW
2 stops21h 33mDelta
Deal found 1/19$617
This FlightHub deal was found by Cheapflights users on 1/21. 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.
jue. 4/37:15 pmORD - BIO
2 stops33h 00mScandinavian Airlines
jue. 4/107:10 amBIO - ORD
2 stops40h 00mScandinavian Airlines
Deal found 1/21$781
This Lufthansa deal was found by Cheapflights users on 1/20. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/1511:35 pmORD - BIO
1 stop17h 20mLufthansa
dom. 3/236:45 pmBIO - ORD
1 stop30h 40mLufthansa
Deal found 1/20$815
This SWISS deal was found by Cheapflights users on 1/21. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/292:20 pmORD - BIO
2 stops20h 30mSWISS
lun. 5/122:10 pmBIO - ORD
2 stops32h 45mSWISS
Deal found 1/21$902
This FlightHub deal was found by Cheapflights users on 1/21. 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.
vie. 8/295:55 pmORD - BIO
1 stop16h 40mTAP AIR PORTUGAL
dom. 9/78:30 pmBIO - ORD
1 stop27h 10mTAP AIR PORTUGAL
Deal found 1/21$916
This KAYAK deal was found by Cheapflights users on 1/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/318:20 pmORD - BIO
2 stops38h 10mAer Lingus
jue. 7/316:10 pmBIO - ORD
1 stop26h 50mAer Lingus
Deal found 1/20$1,085
This KLM deal was found by Cheapflights users on 1/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/225:15 pmORD - BIO
1 stop21h 45mKLM
vie. 8/17:10 amBIO - ORD
1 stop14h 50mKLM
Deal found 1/19$1,177

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 enero 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

mar. 4/29

7:50 pm-5:25 pm

1 stop38h 35m

Bilbao

lun. 5/12

12:05 pm-9:50 am

1 stop28h 45m

$549

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

mié. 3/5

7:20 am-11:55 am

2 stops21h 35m

Bilbao

mié. 3/12

1:10 pm-2:51 pm

2 stops31h 41m

$562

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

mié. 3/5

7:20 am-11:55 am

2 stops21h 35m

Bilbao

mié. 3/12

7:20 am-7:25 pm

1 stop18h 05m

$572

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

mié. 2/12

4:45 pm-12:50 pm

1 stop13h 05m

Bilbao

mié. 2/19

9:15 am-2:30 pm

1 stop12h 15m

$583

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

mié. 2/12

9:25 pm-6:05 pm

1 stop13h 40m

Bilbao

mié. 2/19

1:10 pm-9:01 am

2 stops26h 51m

$599

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

dom. 2/16

5:18 pm-12:50 pm

2 stops12h 32m

Bilbao

lun. 3/3

1:35 pm-2:30 pm

1 stop31h 55m

$610

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

mar. 3/4

9:33 am-11:30 am

2 stops18h 57m

Bilbao

mar. 3/11

6:50 am-6:02 pm

2 stops17h 12m

$617

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

jue. 4/3

7:15 pm-10:45 pm

2 stops20h 30m

Bilbao

jue. 4/10

7:10 am-4:10 pm

2 stops16h 00m

$770

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

sáb. 3/15

11:35 pm-10:55 pm

1 stop17h 20m

Bilbao

dom. 3/23

6:45 pm-7:25 pm

1 stop30h 40m

$815

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

mar. 4/29

2:20 pm-5:50 pm

2 stops20h 30m

Bilbao

lun. 5/12

2:10 pm-3:55 pm

2 stops32h 45m

$902

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 19 results
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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 January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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 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 enero 21, 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 enero 21, 2025.
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

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

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

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

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

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

United Airlines
7.4
Good
8,984 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

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

Turkish Airlines
7.3
Good
3,931 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

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

Scandinavian Airlines
7.3
Good
1,320 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

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 $546. Other airlines that can offer you cheap pricing are Iberia, from $560, and Air Canada, from $565. Turkish Airlines is 39% 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 $483 on Scandinavian Airlines. Other airlines that offer cheap prices include Delta from $485 and Lufthansa from $510 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
Midway to Bilbao flights
O'Hare Intl to San Sebastian 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 enero 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$540Average$813FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$546Average$1,040FlexibilityNo cancel feeOn-time77%
KLMCheapest$567Average$1,049FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$639Average$1,041FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$757Average$1,286FlexibilityNo cancel feeOn-time76%
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