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Bilbao

$343+ Cheap flights from Illinois 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BIO
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
1 adult, Economy
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Cheap flight deals from Illinois to Bilbao

Keep the following information in mind while searching for Illinois to Bilbao flight deals. Data was last updated April 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$630
(FlightHub)

One-way from

$343
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$599
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 Illinois to Bilbao
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One-way flight from Illinois to Bilbao
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 5% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Illinois to Bilbao

Cheapest flights from Illinois to Bilbao
Explore the most affordable flight options available from Illinois to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

This FlightHub deal was found by Cheapflights users on 4/2. 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 10/77:50 pmORD - BIO
1 stop38h 35mTurkish Airlines
Mon 10/2012:05 pmBIO - ORD
1 stop16h 55mTurkish Airlines
Deal found 4/2$593
This Expedia deal was found by Cheapflights users on 3/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/54:30 pmORD - BIO
1 stop13h 15mIberia
Tue 5/131:30 pmBIO - ORD
1 stop12h 20mIberia
Deal found 3/31$640
This Gurufare deal was found by Cheapflights users on 4/1. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/19:15 pmORD - BIO
2 stops32h 40mLufthansa
Mon 11/105:30 pmBIO - ORD
1 stop26h 55mLufthansa
Deal found 4/1$643
This American Airlines deal was found by Cheapflights users on 4/1. 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 11/111:45 amORD - BIO
2 stops14h 45mAmerican Airlines
Mon 11/109:15 amBIO - ORD
2 stops17h 30mAmerican Airlines
Deal found 4/1$691
This Mytrip deal was found by Cheapflights users on 3/31. 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.
Mon 5/52:00 pmORD - BIO
2 stops19h 25mMultiple Airlines
Tue 5/133:45 pmBIO - ORD
2 stops34h 45mMultiple Airlines
Deal found 3/31$694
This United deal was found by Cheapflights users on 4/1. 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.
Tue 10/73:35 pmORD - BIO
1 stop12h 30mUnited Airlines
Mon 10/202:10 pmBIO - ORD
2 stops37h 01mUnited Airlines
Deal found 4/1$704
This SWISS deal was found by Cheapflights users on 4/2. 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.
Tue 10/77:05 pmORD - BIO
1 stop29h 35mSWISS
Mon 10/202:10 pmBIO - ORD
2 stops32h 45mSWISS
Deal found 4/2$721
This FlightHub deal was found by Cheapflights users on 4/1. 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 9/105:15 pmBIO - ORD
2 stops29h 55mScandinavian Airlines
Deal found 4/1$735
This Delta deal was found by Cheapflights users on 4/1. 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.
Sun 10/125:59 pmMDW - BIO
2 stops15h 41mDelta
Sat 11/17:20 amBIO - MDW
2 stops16h 47mDelta
Deal found 4/1$800
This United deal was found by Cheapflights users on 4/1. 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.
Sun 10/53:30 pmSTL - BIO
1 stop19h 55mUnited Airlines
Wed 10/156:45 amBIO - STL
2 stops43h 48mUnited Airlines
Deal found 4/1$805
This KLM deal was found by Cheapflights users on 4/2. 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.
Mon 4/283:30 pmORD - BIO
2 stops13h 25mKLM
Mon 5/1212:00 pmBIO - ORD
1 stop33h 10mKLM
Deal found 4/2$806
This Delta deal was found by Cheapflights users on 4/1. 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.
Sun 4/274:20 pmORD - BIO
1 stop11h 55mDelta
Mon 5/1212:00 pmBIO - ORD
1 stop33h 10mDelta
Deal found 4/1$810

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois 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 April 2, 2025.
Use the filters below to find and compare flights from Illinois to Bilbao that are best for you.

Fly from

Illinois

Fly to

Bilbao

Route

Depart

Return

Price

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Fri 9/19

11:25 am-11:05 am

1 stop16h 40m

Bilbao

Sat 10/4

12:05 pm-10:00 pm

1 stop16h 55m

$630

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 5/5

4:30 pm-12:45 pm

1 stop13h 15m

Bilbao

Tue 5/13

1:30 pm-6:50 pm

1 stop12h 20m

$640

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 5/5

2:00 pm-4:25 pm

2 stops19h 25m

Bilbao

Tue 5/13

3:45 pm-7:30 pm

2 stops34h 45m

$694

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 4/29

6:35 pm-7:55 am

1 stop30h 20m

Bilbao

Mon 5/12

10:20 am-12:10 pm

1 stop32h 50m

$801

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 5/6

4:00 pm-5:50 pm

2 stops18h 50m

Bilbao

Tue 5/13

6:45 am-8:12 pm

2 stops20h 27m

$802

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 4/28

3:30 pm-11:55 am

2 stops13h 25m

Bilbao

Mon 5/12

12:00 pm-2:10 pm

1 stop33h 10m

$806

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 5/6

5:55 pm-5:50 pm

2 stops16h 55m

Bilbao

Tue 5/13

6:45 am-5:24 pm

2 stops17h 39m

$807

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 4/27

4:20 pm-11:15 am

1 stop11h 55m

Bilbao

Mon 5/12

12:00 pm-2:10 pm

1 stop33h 10m

$810

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 4/30

9:40 pm-11:25 pm

1 stop18h 45m

Bilbao

Mon 5/12

6:35 pm-12:30 pm

1 stop24h 55m

$817

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Mon 5/5

10:20 am-10:25 am

2 stops17h 05m

Bilbao

Tue 5/13

6:50 am-5:45 pm

2 stops17h 55m

$819

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 26 results
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Best time to book a flight from Illinois to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from Illinois 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 Illinois to Bilbao

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

Currently, January is the cheapest month in which you can book a flight from Illinois to Bilbao (average of $541). Flying from Illinois 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 IL to BIO?

Find hourly flight availability from Illinois 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 April 2, 2025.

When flying from Illinois to Bilbao, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 April 2, 2025.
To help decide which airline to fly from Illinois to Bilbao, see what other customers have to say about Delta, KLM and Finnair. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

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
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

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
1,323 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

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
1,267 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

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.
Austrian Airlines
7.6
Good
771 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

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
1,572 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

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 Illinois 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 Illinois?

    For a flight from Illinois to Bilbao, you will be flying into Bilbao. Bilbao (BIO) is just 3.0 mi from the center of the city.

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

    The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as $473. However, be on the lookout for offers from Lufthansa and Iberia, as they are both options that can get you from Illinois to Bilbao for a low price.

  • What are the most popular routes from Illinois to Bilbao?

    The most popular route from Illinois to Bilbao is Chicago O'Hare Intl - Bilbao. You may also consider Chicago Midway - Bilbao or Lambert-St Louis - Bilbao.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois 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 Illinois to Bilbao?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Bilbao (average of $541). Flying from Illinois 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 Illinois to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Illinois to Bilbao

Discover the top 4 airlines that operate flights from Illinois 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 April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$567Average$1,046FlexibilityNo cancel feeOn-time75%
IberiaCheapest$578Average$984FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$639Average$1,101FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$646Average$1,079FlexibilityNo cancel feeOn-time76%

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