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$281+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — ORD
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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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 October 29, 2025.

This Iberia deal was found by Cheapflights users on 10/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:45 amBIO - ORD
1 stop15h 10mIberia
Mon 11/105:40 pmORD - BIO
1 stop12h 10mIberia
Deal found 10/27$393
This American Airlines deal was found by Cheapflights users on 10/29. 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.
Thu 12/46:45 amBIO - ORD
1 stop15h 10mAmerican Airlines
Mon 12/85:40 pmORD - BIO
1 stop12h 10mAmerican Airlines
Deal found 10/29$394
This Finnair deal was found by Cheapflights users on 10/28. 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 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 12/85:40 pmORD - BIO
1 stop12h 10mMultiple Airlines
Deal found 10/28$399
This Flighttix deal was found by Cheapflights users on 10/28. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:45 amBIO - ORD
1 stop13h 25mLufthansa
Tue 12/26:25 pmORD - BIO
1 stop21h 55mLufthansa
Deal found 10/28$408
This Expedia deal was found by Cheapflights users on 10/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/259:35 pmBIO - ORD
2 stops29h 51mIberia
Tue 12/25:40 pmORD - BIO
1 stop12h 10mIberia
Deal found 10/28$409
This Finnair deal was found by Cheapflights users on 10/29. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:35 pmBIO - ORD
1 stop24h 20mMultiple Airlines
Mon 12/155:40 pmORD - BIO
1 stop22h 35mMultiple Airlines
Deal found 10/29$413
This Iberia deal was found by Cheapflights users on 10/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/129:35 pmBIO - ORD
1 stop24h 20mIberia
Sun 11/165:40 pmORD - BIO
1 stop20h 10mIberia
Deal found 10/27$421
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:45 amBIO - ORD
2 stops17h 05mUnited Airlines
Tue 12/22:15 pmORD - BIO
2 stops15h 35mUnited Airlines
Deal found 10/28$424
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1812:50 pmBIO - ORD
2 stops17h 44mUnited Airlines
Wed 11/269:50 pmORD - BIO
1 stop13h 15mUnited Airlines
Deal found 10/28$428
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1812:50 pmBIO - ORD
2 stops17h 44mUnited Airlines
Tue 11/254:20 pmORD - BIO
1 stop12h 45mUnited Airlines
Deal found 10/28$431
This Iberia deal was found by Cheapflights users on 10/28. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/199:35 pmBIO - ORD
1 stop24h 20mIberia
Thu 11/275:40 pmORD - BIO
1 stop12h 10mIberia
Deal found 10/28$439
This Delta deal was found by Cheapflights users on 10/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/226:50 amBIO - MDW
2 stops18h 18mDelta
Sat 2/281:00 pmMDW - BIO
2 stops20h 30mDelta
Deal found 10/27$597

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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$393
(Iberia)

One-way from

$281
(Finnair)

Popular in

July

Cheapest in

January

Average price

$564
Provider with most accurate pricing for Bilbao-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bilbao-Chicago (CHI) flights.
Search Deals
From Bilbao to Illinois
Search Deals
One-way flight from Bilbao to Illinois
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($121 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 October 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

Thu 12/4

6:45 am-2:55 pm

1 stop15h 10m

Chicago O'Hare Intl

Mon 12/8

5:40 pm-12:50 pm

1 stop12h 10m

$394

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Wed 12/3

6:45 am-7:22 pm

2 stops19h 37m

Chicago O'Hare Intl

Mon 12/8

5:40 pm-12:50 pm

1 stop12h 10m

$399

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Wed 12/10

9:35 pm-2:55 pm

1 stop24h 20m

Chicago O'Hare Intl

Mon 12/15

5:40 pm-11:15 pm

1 stop22h 35m

$413

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Mon 4/27

6:45 am-6:50 pm

1 stop19h 05m

Chicago O'Hare Intl

Sat 5/9

4:30 pm-11:15 pm

1 stop23h 45m

$419

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Wed 11/12

9:35 pm-2:55 pm

1 stop24h 20m

Chicago O'Hare Intl

Sun 11/16

5:40 pm-8:50 pm

1 stop20h 10m

$421

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Tue 11/18

12:50 pm-11:34 pm

2 stops17h 44m

Chicago O'Hare Intl

Wed 11/26

9:50 pm-6:05 pm

1 stop13h 15m

$428

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

Sat 11/22

6:50 am-6:08 pm

2 stops18h 18m

Chicago Midway

Sat 2/28

1:00 pm-4:30 pm

2 stops20h 30m

$597

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

Thu 11/20

6:50 am-6:08 pm

2 stops18h 18m

Chicago Midway

Wed 11/26

9:34 am-11:30 am

2 stops18h 56m

$603

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

$609

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

Thu 11/20

6:50 am-6:08 pm

2 stops18h 18m

Chicago Midway

Sun 11/23

1:15 pm-11:20 am

2 stops15h 05m

$609

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 27 results
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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

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 October 29, 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
7,541 reviews

Boarding

7.0

Crew

7.6

Comfort

6.8

Entertainment

6.4

Overall

6.8

Food

6.3

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
7,541 reviews
Lufthansa
6.8
Okay
7,541 reviews

Boarding

7.0

Crew

7.6

Comfort

6.8

Entertainment

6.4

Overall

6.8

Food

6.3

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 15h 10m. 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 cheapest airlines to fly from Bilbao to Illinois one-way?

    The cheapest airlines for a one-way flight from Bilbao to Illinois are Finnair ($281), Lufthansa ($445), and Delta ($616).

  • 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.

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