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$350+ Cheap flights from Bilbao (BIO) to Illinois

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 6/16. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — ORD
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheap flight deals from Bilbao to Illinois

Keep the following information in mind while searching for Bilbao to Illinois flight deals. Data was last updated April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$464
(lol.travel)

One-way from

$350
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$590
Provider with most accurate pricing for Bilbao-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Bilbao-Chicago (CHI) flights.
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From Bilbao to Illinois
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One-way flight from Bilbao to Illinois
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Highest demand for flights based on searches. 25% potential increase in price ($195 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($30 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 Bilbao to Illinois

Cheapest flights from Bilbao to Illinois
Explore the most affordable flight options available from Bilbao to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This lol.travel deal was found by Cheapflights users on 4/29. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/199:35 pmBIO - ORD
1 stop23h 40mMultiple Airlines
Mon 5/264:30 pmORD - BIO
1 stop23h 45mMultiple Airlines
Deal found 4/29$473
This Flighttix deal was found by Cheapflights users on 4/29. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/199:15 amBIO - ORD
1 stop12h 00mIberia
Mon 5/263:20 pmORD - BIO
2 stops14h 25mIberia
Deal found 4/29$489
This lol.travel deal was found by Cheapflights users on 4/29. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/236:45 amBIO - ORD
1 stop19h 05mFinnair
Wed 5/284:30 pmORD - BIO
1 stop23h 45mFinnair
Deal found 4/29$492
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/269:15 amBIO - ORD
1 stop12h 00mAmerican Airlines
Mon 6/211:45 amORD - BIO
2 stops13h 45mAmerican Airlines
Deal found 4/29$534
This Delta deal was found by Cheapflights users on 4/29. 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.
Thu 5/296:50 amBIO - MDW
2 stops18h 55mDelta
Thu 6/59:16 amMDW - BIO
2 stops18h 09mDelta
Deal found 4/29$591
This KLM deal was found by Cheapflights users on 4/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2912:00 pmBIO - ORD
1 stop33h 10mKLM
Thu 6/54:20 pmORD - BIO
1 stop11h 55mKLM
Deal found 4/29$591
This Delta deal was found by Cheapflights users on 4/29. 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.
Fri 5/237:10 amBIO - ORD
1 stop14h 50mDelta
Wed 5/287:25 pmORD - BIO
2 stops14h 05mDelta
Deal found 4/29$620
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1112:30 pmBIO - ORD
1 stop13h 07mUnited Airlines
Thu 6/196:25 pmORD - BIO
1 stop16h 55mUnited Airlines
Deal found 4/29$773
This Air Canada deal was found by Cheapflights users on 4/29. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/16:45 amBIO - ORD
2 stops32h 14mAir Canada
Tue 7/81:01 pmORD - BIO
2 stops22h 19mAir Canada
Deal found 4/29$787
This SmartFares deal was found by Cheapflights users on 4/29. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1312:05 pmBIO - ORD
1 stop28h 35mTurkish Airlines
Fri 6/2011:25 amORD - BIO
1 stop16h 40mTurkish Airlines
Deal found 4/29$864
This Air Canada deal was found by Cheapflights users on 4/29. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/206:45 amBIO - STL
2 stops20h 13mAir Canada
Thu 6/261:30 pmSTL - BIO
2 stops21h 50mAir Canada
Deal found 4/29$969
This Air France deal was found by Cheapflights users on 4/29. 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.
Wed 5/216:50 amBIO - STL
2 stops16h 57mMultiple Airlines
Wed 6/2510:48 amSTL - BIO
2 stops16h 37mMultiple Airlines
Deal found 4/29$972

Cheapflights Fare Finder

Customize your flight search to find flights from Bilbao to Illinois 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 29, 2025.
Use the filters below to find and compare flights from Bilbao to Illinois that are best for you.

Fly from

Bilbao

Fly to

Illinois

Route

Depart

Return

Price

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Mon 5/19

9:35 pm-2:15 pm

1 stop23h 40m

Chicago O'Hare Intl

Mon 5/26

4:30 pm-11:15 pm

1 stop23h 45m

$473

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Mon 5/19

9:15 am-2:15 pm

1 stop12h 00m

Chicago O'Hare Intl

Mon 5/26

3:20 pm-12:45 pm

2 stops14h 25m

$489

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Fri 5/23

6:45 am-6:50 pm

1 stop19h 05m

Chicago O'Hare Intl

Wed 5/28

4:30 pm-11:15 pm

1 stop23h 45m

$492

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Mon 5/26

9:15 am-2:15 pm

1 stop12h 00m

Chicago O'Hare Intl

Mon 6/2

11:45 am-8:30 am

2 stops13h 45m

$534

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

Thu 5/29

6:50 am-6:45 pm

2 stops18h 55m

Chicago Midway

Thu 6/5

9:16 am-10:25 am

2 stops18h 09m

$591

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Thu 5/29

12:00 pm-2:10 pm

1 stop33h 10m

Chicago O'Hare Intl

Thu 6/5

4:20 pm-11:15 am

1 stop11h 55m

$591

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Fri 5/23

7:10 am-3:00 pm

1 stop14h 50m

Chicago O'Hare Intl

Wed 5/28

7:25 pm-4:30 pm

2 stops14h 05m

$620

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Wed 6/11

12:30 pm-6:37 pm

1 stop13h 07m

Chicago O'Hare Intl

Thu 6/19

6:25 pm-6:20 pm

1 stop16h 55m

$773

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Tue 7/1

6:45 am-7:59 am

2 stops32h 14m

Chicago O'Hare Intl

Tue 7/8

1:01 pm-6:20 pm

2 stops22h 19m

$787

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Fri 6/13

12:05 pm-9:40 am

1 stop28h 35m

Chicago O'Hare Intl

Fri 6/20

11:25 am-11:05 am

1 stop16h 40m

$864

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 21 results
1
2
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Best time to book a flight from Bilbao to Illinois

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

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated April 29, 2025.
Read through reviews of airlines operating flights from Bilbao to Illinois, such as Delta, KLM and Finnair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Austrian Airlines
7.6
Good
780 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Bilbao to Illinois. 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 from for flights from Bilbao to Illinois?

    Located just 3.0 mi from the city center, Bilbao (BIO) is the airport most travelers will use when flying to Illinois from Bilbao.

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

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

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Bilbao to Illinois (average of $245). Flying from Bilbao to Illinois in March is currently the most expensive (average of $321). 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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