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$324+ 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — ORD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$411
(Mytrip)

One-way from

$324
(Finnair)

Popular in

July

Cheapest in

January

Average price

$477
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. 16% potential increase in price ($122 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/11. 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.
Fri 10/318:30 pmBIO - ORD
1 stop27h 15mScandinavian Airlines
Sun 11/97:20 pmORD - BIO
1 stop16h 20mScandinavian Airlines
Deal found 9/11$411
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 12/36:45 amBIO - ORD
1 stop14h 45mAmerican Airlines
Mon 12/84:45 pmORD - BIO
1 stop13h 05mAmerican Airlines
Deal found 9/10$450
This Finnair deal was found by Cheapflights users on 9/11. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:45 amBIO - ORD
2 stops19h 37mMultiple Airlines
Mon 12/82:42 pmORD - BIO
2 stops25h 33mMultiple Airlines
Deal found 9/11$454
This Finnair deal was found by Cheapflights users on 9/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:45 amBIO - ORD
1 stop19h 05mMultiple Airlines
Mon 11/34:45 pmORD - BIO
1 stop13h 05mMultiple Airlines
Deal found 9/10$467
This Expedia deal was found by Cheapflights users on 9/11. 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.
Fri 10/176:45 amBIO - ORD
2 stops16h 28mIberia
Mon 10/204:30 pmORD - BIO
1 stop13h 15mIberia
Deal found 9/11$472
This Mytrip deal was found by Cheapflights users on 9/11. 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.
Fri 10/316:45 amBIO - ORD
2 stops32h 28mAir Canada
Sun 11/92:00 pmORD - BIO
2 stops15h 00mAir Canada
Deal found 9/11$483
This Finnair deal was found by Cheapflights users on 9/11. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:45 amBIO - ORD
1 stop14h 45mMultiple Airlines
Sun 11/94:45 pmORD - BIO
1 stop13h 05mMultiple Airlines
Deal found 9/11$484
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 10/316:45 amBIO - ORD
1 stop14h 45mAmerican Airlines
Sun 11/911:48 amORD - BIO
2 stops13h 42mAmerican Airlines
Deal found 9/10$490
This Delta deal was found by Cheapflights users on 9/11. 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.
Wed 11/126:50 amBIO - MDW
2 stops18h 28mDelta
Wed 11/191:14 pmMDW - BIO
2 stops15h 06mDelta
Deal found 9/11$612
This Delta deal was found by Cheapflights users on 9/10. 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.
Wed 12/36:50 amBIO - MDW
2 stops18h 10mDelta
Mon 12/81:14 pmMDW - BIO
2 stops15h 06mDelta
Deal found 9/10$614
This Delta deal was found by Cheapflights users on 9/11. 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 10/316:50 amBIO - MDW
2 stops21h 24mDelta
Sun 11/95:34 pmMDW - BIO
2 stops16h 46mDelta
Deal found 9/11$664
This Delta deal was found by Cheapflights users on 9/11. 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.
Wed 10/296:50 amBIO - MDW
2 stops21h 24mDelta
Wed 11/191:14 pmMDW - BIO
2 stops15h 06mDelta
Deal found 9/11$688

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 September 11, 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

Fri 10/31

8:30 pm-5:45 pm

1 stop27h 15m

Chicago O'Hare Intl

Sun 11/9

7:20 pm-6:40 pm

1 stop16h 20m

$411

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Fri 10/31

8:30 pm-5:45 pm

1 stop27h 15m

Chicago O'Hare Intl

Thu 11/6

7:20 pm-7:40 pm

1 stop17h 20m

$411

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Wed 12/3

6:45 am-2:30 pm

1 stop14h 45m

Chicago O'Hare Intl

Mon 12/8

4:21 pm-12:50 pm

2 stops13h 29m

$450

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Wed 12/3

6:45 am-7:22 pm

2 stops19h 37m

Chicago O'Hare Intl

Mon 12/8

4:45 pm-8:50 pm

1 stop21h 05m

$454

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Fri 10/24

6:45 am-6:50 pm

1 stop19h 05m

Chicago O'Hare Intl

Mon 11/3

4:45 pm-12:50 pm

1 stop13h 05m

$467

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Fri 10/31

6:45 am-3:30 pm

1 stop14h 45m

Chicago O'Hare Intl

Thu 11/6

4:45 pm-4:55 pm

1 stop17h 10m

$467

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

Wed 12/3

6:50 am-6:18 pm

2 stops18h 28m

Chicago Midway

Mon 12/8

1:14 pm-11:20 am

2 stops15h 06m

$612

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

Wed 11/12

6:50 am-6:18 pm

2 stops18h 28m

Chicago Midway

Wed 11/19

1:14 pm-11:20 am

2 stops15h 06m

$612

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

Fri 10/31

6:50 am-10:14 pm

2 stops21h 24m

Chicago Midway

Sun 11/9

5:34 pm-5:20 pm

2 stops16h 46m

$664

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

Wed 10/29

6:50 am-10:14 pm

2 stops21h 24m

Chicago Midway

Wed 11/19

1:14 pm-11:20 am

2 stops15h 06m

$688

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 38 results
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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

How much does it cost to fly round-trip from Bilbao to Illinois?

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 September 11, 2025.
Peruse reviews from past customers who have flown with Lufthansa from Bilbao to Illinois to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,409 reviews

Boarding

7.0

Entertainment

6.4

Comfort

6.8

Food

6.3

Crew

7.6

Overall

6.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.
Lufthansa
6.8
Okay
7,409 reviews
Lufthansa
6.8
Okay
7,409 reviews

Boarding

7.0

Entertainment

6.4

Comfort

6.8

Food

6.3

Crew

7.6

Overall

6.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.

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.

  • How long is the flight from Bilbao to Illinois?

    Departing from Bilbao to Illinois will take you 14h 45m. Bilbao and Illinois 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 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.

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