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$399+ Cheap flights from Bilbao (BIO) to Chicago (CHI)

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 12/29. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — CHI
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
1 adult, Economy
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Cheap flight deals from Bilbao to Chicago

Cheapest flights from Bilbao to Chicago
Explore the most affordable flight options available from Bilbao to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2026.

This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:45 am
BIO
-
ORD
1 stop14h 40m
Multiple Airlines
Mon 9/74:55 pm
ORD
-
BIO
1 stop13h 50m
Multiple Airlines
Deal found 7/27$515
This Iberia deal was found by Cheapflights users on 7/26. 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.
Mon 8/316:45 am
BIO
-
ORD
1 stop16h 15m
Iberia
Mon 9/710:25 pm
ORD
-
BIO
1 stop27h 05m
Iberia
Deal found 7/26$523
This American Airlines deal was found by Cheapflights users on 7/25. 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.
Tue 10/139:35 pm
BIO
-
ORD
1 stop25h 25m
Multiple Airlines
Mon 10/191:59 pm
ORD
-
BIO
2 stops15h 46m
Multiple Airlines
Deal found 7/25$531
This Iberia deal was found by Cheapflights users on 7/27. 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.
Tue 9/159:35 pm
BIO
-
ORD
1 stop23h 50m
Iberia
Sun 9/2011:37 am
ORD
-
BIO
2 stops13h 53m
Iberia
Deal found 7/27$542
This Iberia deal was found by Cheapflights users on 7/26. 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.
Tue 9/15:35 pm
BIO
-
ORD
1 stop27h 50m
Iberia
Sun 9/610:25 pm
ORD
-
BIO
1 stop16h 40m
Iberia
Deal found 7/26$544
This Iberia deal was found by Cheapflights users on 7/25. 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.
Tue 10/139:35 pm
BIO
-
ORD
1 stop23h 50m
Iberia
Mon 10/1910:20 pm
ORD
-
BIO
1 stop17h 55m
Iberia
Deal found 7/25$550
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:45 am
BIO
-
ORD
1 stop14h 40m
Multiple Airlines
Mon 9/2110:15 pm
ORD
-
BIO
1 stop15h 35m
Multiple Airlines
Deal found 7/27$561
This Expedia deal was found by Cheapflights users on 7/28. 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.
Thu 10/226:45 am
BIO
-
ORD
1 stop16h 15m
Iberia
Tue 10/276:40 pm
ORD
-
BIO
1 stop12h 10m
Iberia
Deal found 7/28$562
This Expedia deal was found by Cheapflights users on 7/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/39:15 am
BIO
-
ORD
1 stop12h 10m
Iberia
Mon 9/710:25 pm
ORD
-
BIO
1 stop17h 50m
Iberia
Deal found 7/30$563
This Iberia deal was found by Cheapflights users on 7/25. 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 11/56:45 am
BIO
-
ORD
1 stop15h 10m
Iberia
Sun 11/812:59 pm
ORD
-
BIO
2 stops16h 51m
Iberia
Deal found 7/25$566
This American Airlines deal was found by Cheapflights users on 7/29. 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 9/39:15 am
BIO
-
ORD
1 stop13h 45m
American Airlines
Mon 9/710:25 pm
ORD
-
BIO
1 stop27h 05m
American Airlines
Deal found 7/29$570
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:45 am
BIO
-
MDW
2 stops18h 15m
Delta
Tue 10/276:44 pm
MDW
-
BIO
2 stops16h 41m
Delta
Deal found 7/28$667

Find flight deals from Bilbao to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Bilbao (BIO) to Chicago (CHI). 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 July 30, 2026.

Round-trip from

$515
(American Airlines)

One-way from

$399
(Travelocity)

Popular in

August

Cheapest in

February

Average price

$817
From Bilbao to Chicago (CHI)
Search Deals
One-way flight from Bilbao to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($148 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bilbao to Chicago 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 July 30, 2026.
Use the filters below to find and compare flights from Bilbao to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Tue 10/13

9:35 pm-2:25 pm

1 stop23h 50m

Chicago O'Hare Intl

Mon 10/19

10:20 pm-11:15 pm

1 stop17h 55m

$550

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Thu 9/17

6:45 am-2:15 pm

1 stop14h 30m

Chicago O'Hare Intl

Mon 9/21

10:30 am-9:50 am

2 stops16h 20m

$661

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Tue 9/1

6:45 am-4:17 pm

2 stops16h 32m

Chicago O'Hare Intl

Sun 9/6

10:30 am-9:50 am

2 stops16h 20m

$666

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

Thu 10/22

6:45 am-6:00 pm

2 stops18h 15m

Chicago Midway

Tue 10/27

6:44 pm-5:25 pm

2 stops16h 41m

$667

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

Mon 8/31

6:45 am-4:59 pm

2 stops17h 14m

Chicago Midway

Mon 9/7

1:19 pm-11:15 am

2 stops14h 56m

$671

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

Tue 9/15

12:00 pm-10:44 pm

2 stops17h 44m

Chicago Midway

Sun 9/20

7:01 pm-4:30 pm

2 stops14h 29m

$672

BilbaoChicago

BIO - MDW

BIOMDW

Bilbao

Tue 10/13

6:45 am-4:47 pm

2 stops17h 02m

Chicago Midway

Mon 10/19

12:27 pm-11:15 am

2 stops15h 48m

$672

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Tue 10/13

6:45 am-4:40 pm

2 stops16h 55m

Chicago O'Hare Intl

Mon 10/19

5:30 pm-4:30 pm

2 stops16h 00m

$672

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Thu 9/17

6:50 am-4:29 pm

2 stops16h 39m

Chicago O'Hare Intl

Mon 9/21

10:30 pm-10:25 pm

1 stop16h 55m

$700

BilbaoChicago

BIO - ORD

BIOORD

Bilbao

Tue 9/15

11:55 am-12:35 pm

2 stops31h 40m

Chicago O'Hare Intl

Sun 9/20

2:20 pm-5:55 pm

2 stops20h 35m

$714

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 37 resultsSorted by cheapest first
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Best time to book a flight from Bilbao to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago 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 Chicago

What is the cheapest month to book a flight from Bilbao to Chicago?

Currently, January is the cheapest month in which you can book a flight from Bilbao to Chicago (average of $448). Flying from Bilbao to Chicago in August is currently the most expensive (average of $858). 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.

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

Airfare is below average for this route at the moment.
Bilbao to Chicago flights typically cost between $790 and $1,222 in August.
The cheapest round-trip price found within the last 5 days was $515 on Multiple Airlines (Aug 31-Sep 7).

Related info for your journey

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

    For a flight from Bilbao to Chicago, you will be flying from Bilbao. Bilbao (BIO) is just 3.0 mi from the center of the city. Bilbao is the only Bilbao airport and it handles 0 outbound flights to Chicago per day. 0 airlines have flights to Chicago from Bilbao on a regular basis.

  • How long is the flight from Bilbao to Chicago?

    Airlines like Iberia, Delta, and KLM fly from Bilbao to Chicago in about 14h 30m. The time it takes to get you to your destination can typically vary by up to 9h 20m. The distance from Bilbao to Chicago is about 4116 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Bilbao to Chicago (average of $448). Flying from Bilbao to Chicago in August is currently the most expensive (average of $858). 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

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Benton Harbor
Lansing
Merrillville
Valparaiso
Hammond
Saint Joseph
Porter

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Alternative routes for Bilbao to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
Bilbao to O'Hare Intl flights

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