HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$327+ 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — ORD
juin 17 — juin 241
mar. 6/17
mar. 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Bilbao to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 juin 12, 2025.

Round-trip from

$428
(Expedia)

One-way from

$327
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$667
From Bilbao to Illinois
Search Deals
One-way flight from Bilbao to Illinois
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($136 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

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 juin 12, 2025.

This Expedia deal was found by Cheapflights users on 6/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 10/229:15 amBIO - ORD
1 stop12h 00mIberia
jeu. 10/305:45 pmORD - BIO
1 stop13h 05mIberia
Deal found 6/10$428
This American Airlines deal was found by Cheapflights users on 6/10. 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.
mer. 10/229:15 amBIO - ORD
1 stop12h 00mAmerican Airlines
jeu. 10/3011:45 amORD - BIO
2 stops14h 45mAmerican Airlines
Deal found 6/10$456
This United Airlines deal was found by Cheapflights users on 6/12. 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.
jeu. 9/46:45 amBIO - ORD
1 stop20h 10mUnited Airlines
mar. 9/163:45 pmORD - BIO
1 stop12h 00mUnited Airlines
Deal found 6/12$507
This Air Canada deal was found by Cheapflights users on 6/12. 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.
jeu. 9/256:45 amBIO - ORD
2 stops19h 44mAir Canada
lun. 9/299:55 amORD - BIO
2 stops25h 50mAir Canada
Deal found 6/12$524
This Delta deal was found by Cheapflights users on 6/10. 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.
mer. 10/226:50 amBIO - MDW
2 stops18h 17mDelta
jeu. 10/305:59 pmMDW - BIO
2 stops17h 21mDelta
Deal found 6/10$593
This KLM deal was found by Cheapflights users on 6/12. 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.
lun. 9/227:10 amBIO - MDW
2 stops16h 13mKLM
lun. 9/296:45 pmMDW - BIO
2 stops14h 45mKLM
Deal found 6/12$607
This SWISS deal was found by Cheapflights users on 6/10. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 10/222:10 pmBIO - ORD
2 stops29h 45mSWISS
jeu. 10/309:30 pmORD - BIO
3 stops64h 00mSWISS
Deal found 6/10$655
This Booking.com deal was found by Cheapflights users on 6/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/57:30 pmBIO - ORD
1 stop22h 30mLufthansa
mar. 8/123:35 pmORD - BIO
1 stop12h 30mLufthansa
Deal found 6/12$731
This KLM deal was found by Cheapflights users on 6/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/15:15 pmBIO - ORD
1 stop28h 25mKLM
sam. 7/125:10 pmORD - BIO
1 stop21h 50mKLM
Deal found 6/10$732
This Delta deal was found by Cheapflights users on 6/10. 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.
dim. 6/156:50 amBIO - ORD
1 stop14h 20mDelta
ven. 3/276:10 pmORD - BIO
2 stops17h 10mDelta
Deal found 6/10$735
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/187:10 pmBIO - ORD
1 stop26h 45mMultiple Airlines
lun. 8/256:01 pmORD - BIO
2 stops41h 19mMultiple Airlines
Deal found 6/10$766
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 6/266:45 amBIO - STL
2 stops23h 00mUnited Airlines
jeu. 7/101:04 pmSTL - BIO
2 stops14h 41mUnited Airlines
Deal found 6/11$776

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 juin 12, 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

mer. 10/22

9:15 am-2:15 pm

1 stop12h 00m

Chicago O'Hare Intl

jeu. 10/30

5:45 pm-12:50 pm

1 stop13h 05m

$428

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

mer. 10/22

9:15 am-2:15 pm

1 stop12h 00m

Chicago O'Hare Intl

jeu. 10/30

11:45 am-8:30 am

2 stops14h 45m

$456

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

jeu. 9/4

6:45 am-7:55 pm

1 stop20h 10m

Chicago O'Hare Intl

mar. 9/16

3:45 pm-10:45 am

1 stop12h 00m

$507

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

jeu. 9/25

6:45 am-7:29 pm

2 stops19h 44m

Chicago O'Hare Intl

lun. 9/29

9:55 am-6:45 pm

2 stops25h 50m

$524

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

mer. 10/22

6:50 am-6:07 pm

2 stops18h 17m

Chicago Midway

jeu. 10/30

5:59 pm-5:20 pm

2 stops17h 21m

$593

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

lun. 9/22

7:10 am-4:23 pm

2 stops16h 13m

Chicago Midway

lun. 9/29

6:45 pm-4:30 pm

2 stops14h 45m

$607

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

mer. 10/22

2:10 pm-12:55 pm

2 stops29h 45m

Chicago O'Hare Intl

jeu. 10/30

9:30 pm-7:30 pm

3 stops64h 00m

$655

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

mar. 8/5

7:30 pm-11:00 am

1 stop22h 30m

Chicago O'Hare Intl

mar. 8/12

3:35 pm-11:05 am

1 stop12h 30m

$731

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

mar. 7/1

5:15 pm-2:40 pm

1 stop28h 25m

Chicago O'Hare Intl

sam. 7/12

5:10 pm-10:00 pm

1 stop21h 50m

$732

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

mar. 7/1

6:50 am-6:09 pm

2 stops18h 19m

Chicago O'Hare Intl

mar. 7/8

10:20 am-11:15 am

2 stops17h 55m

$742

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 33 results
1
2
3
4

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 juin 12, 2025.
Read through reviews of airlines operating flights from Bilbao to Illinois, such as Delta, KLM and SWISS. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,623 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Turkish Airlines
7.3
Good
3,848 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 Aer Lingus ($477), Lufthansa ($532), and TAP AIR PORTUGAL ($611).

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Bilbao to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Bilbao to Newark flights
Bilbao to John F Kennedy Intl flights
Bilbao to Miami flights
Bilbao to San Francisco flights
Bilbao to Dallas/Fort Worth flights
Bilbao to Denver flights
Bilbao to O'Hare Intl flights
Bilbao to Los Angeles flights
Bilbao to New Orleans flights
Bilbao to Orlando flights
Bilbao to Honolulu flights
Bilbao to Dulles Intl flights
San Sebastian to San Francisco flights
Bilbao to Las Vegas flights
Bilbao to Baltimore flights
San Sebastian to John F Kennedy Intl flights
Bilbao to Fort Lauderdale flights
Bilbao to West Palm Beach flights
Bilbao to Boston flights
San Sebastian to Miami flights
Bilbao to Santa Ana flights
Bilbao to Pittsburgh flights
Bilbao to Seattle flights
Bilbao to Salt Lake City flights
Bilbao to Hobby flights
Bilbao to San Diego flights
San Sebastian to Los Angeles flights
Bilbao to George Bush Intcntl flights
Bilbao to Boise flights
Bilbao to Atlanta flights
Bilbao to San Antonio flights
Bilbao to Tampa flights
Bilbao to Minneapolis flights
Bilbao to St. Louis flights
Bilbao to Austin flights
Bilbao to Sky Harbor Intl flights
San Sebastian to Dulles Intl flights
Bilbao to Jacksonville flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.