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$332+ Cheap flights from Bilbao (BIO) to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — ORD
févr. 4 — févr. 111
mar. 2/4
mar. 2/11
1 adult, Economy
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Cheap flight deals from Bilbao to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Bilbao (BIO) to Illinois (USIL). 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 janvier 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$332
(Air France)

Popular in

July

Cheapest in

January

Average price

$346
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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Highest demand for flights based on searches. 27% potential increase in price ($219 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($24 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 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 janvier 30, 2025.

This Air France deal was found by Cheapflights users on 1/29. 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.
ven. 2/146:50 amBIO - ORD
1 stop14h 40mMultiple Airlines
mar. 2/185:20 pmORD - BIO
1 stop11h 10mMultiple Airlines
Deal found 1/29$332
This Delta deal was found by Cheapflights users on 1/29. 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.
ven. 2/146:50 amBIO - ORD
1 stop14h 40mDelta
mar. 2/185:20 pmORD - BIO
1 stop11h 10mDelta
Deal found 1/29$333
This Delta deal was found by Cheapflights users on 1/29. 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.
ven. 2/146:50 amBIO - MDW
2 stops18h 21mDelta
mar. 2/182:08 pmMDW - BIO
2 stops14h 22mDelta
Deal found 1/29$338
This KLM deal was found by Cheapflights users on 1/29. 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.
mer. 3/511:55 amBIO - ORD
2 stops15h 58mKLM
lun. 3/105:25 pmORD - BIO
1 stop11h 55mKLM
Deal found 1/29$344
This KLM deal was found by Cheapflights users on 1/30. 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.
sam. 2/156:50 amBIO - MDW
2 stops16h 19mKLM
mer. 2/192:08 pmMDW - BIO
2 stops14h 22mKLM
Deal found 1/30$390
This American Airlines deal was found by Cheapflights users on 1/30. 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.
sam. 2/156:45 amBIO - ORD
1 stop14h 45mAmerican Airlines
mer. 2/194:45 pmORD - BIO
1 stop32h 45mAmerican Airlines
Deal found 1/30$457
This Iberia deal was found by Cheapflights users on 1/30. 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.
ven. 2/145:35 pmBIO - ORD
1 stop27h 55mIberia
mar. 2/184:45 pmORD - BIO
1 stop13h 05mIberia
Deal found 1/30$459
This United Airlines deal was found by Cheapflights users on 1/29. 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.
mar. 6/36:45 amBIO - ORD
2 stops15h 10mUnited Airlines
sam. 9/1311:00 amORD - BIO
2 stops16h 45mUnited Airlines
Deal found 1/29$460
This Delta deal was found by Cheapflights users on 1/30. 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.
sam. 2/156:50 amBIO - STL
2 stops21h 59mDelta
mer. 2/196:00 amSTL - BIO
2 stops22h 30mDelta
Deal found 1/30$687
This Lufthansa deal was found by Cheapflights users on 1/29. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/257:40 amBIO - ORD
1 stop17h 45mLufthansa
jeu. 6/266:25 pmORD - BIO
1 stop11h 55mLufthansa
Deal found 1/29$699
This Air France deal was found by Cheapflights users on 1/30. 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.
mer. 6/116:50 amBIO - STL
2 stops16h 55mMultiple Airlines
lun. 9/811:51 amSTL - BIO
2 stops15h 34mMultiple Airlines
Deal found 1/30$720
This United Airlines deal was found by Cheapflights users on 1/30. 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.
mer. 6/116:45 amBIO - STL
1 stop13h 45mUnited Airlines
jeu. 9/111:27 pmSTL - BIO
2 stops14h 18mUnited Airlines
Deal found 1/30$743

Find flights from Bilbao to Illinois within your budget

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 janvier 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

ven. 2/14

6:50 am-2:30 pm

1 stop14h 40m

Chicago O'Hare Intl

mar. 2/18

5:20 pm-11:30 am

1 stop11h 10m

$332

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

ven. 2/14

6:50 am-2:30 pm

1 stop14h 40m

Chicago O'Hare Intl

mar. 2/18

5:20 pm-11:30 am

1 stop11h 10m

$333

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

ven. 2/14

6:50 am-6:11 pm

2 stops18h 21m

Chicago Midway

mar. 2/18

2:08 pm-11:30 am

2 stops14h 22m

$338

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

mer. 3/5

11:55 am-8:53 pm

2 stops15h 58m

Chicago O'Hare Intl

lun. 3/10

5:25 pm-11:20 am

1 stop11h 55m

$344

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

sam. 2/15

6:50 am-4:09 pm

2 stops16h 19m

Chicago Midway

mer. 2/19

2:08 pm-11:30 am

2 stops14h 22m

$390

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

sam. 2/15

6:45 am-2:30 pm

1 stop14h 45m

Chicago O'Hare Intl

mer. 2/19

4:45 pm-8:30 am

1 stop32h 45m

$457

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

ven. 2/14

5:35 pm-2:30 pm

1 stop27h 55m

Chicago O'Hare Intl

mar. 2/18

4:45 pm-12:50 pm

1 stop13h 05m

$459

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

mar. 6/3

6:45 am-2:55 pm

2 stops15h 10m

Chicago O'Hare Intl

sam. 9/13

11:00 am-10:45 am

2 stops16h 45m

$460

BilbaoSt. Louis

BIO - STL

BIOSTL

Bilbao

sam. 2/15

6:50 am-9:49 pm

2 stops21h 59m

Lambert-St Louis

mer. 2/19

6:00 am-11:30 am

2 stops22h 30m

$687

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

mar. 2/25

7:40 am-6:25 pm

1 stop17h 45m

Chicago O'Hare Intl

jeu. 6/26

6:25 pm-1:20 pm

1 stop11h 55m

$699

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Showing 1-10 of 29 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.

Travel insights for flights from Bilbao to Illinois

Get recent, data-driven insights about flights from Bilbao to Illinois including ideal travel times, pricing trends, and more.

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 janvier 30, 2025.
Read through reviews of airlines operating flights from Bilbao to Illinois, such as Delta, KLM and Austrian Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

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
8,454 reviews
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

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
1,335 reviews
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

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
7.5
Good
786 reviews
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

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

Air France
7.4
Good
1,475 reviews
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

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

United Airlines
7.4
Good
8,913 reviews
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

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 cheapest airlines to fly from Bilbao to Illinois one-way?

    The cheapest airlines for a one-way flight from Bilbao to Illinois are TAP AIR PORTUGAL ($477), Aer Lingus ($486), and KLM ($494).

  • 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 $325). 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 Bilbao to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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