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Bilbao

$511+ Cheap flights from Illinois to Bilbao (BIO)

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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BIO
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheap flight deals from Illinois to Bilbao

Keep the following information in mind while searching for Illinois to Bilbao flight deals. Data was last updated April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$608
(Finnair)

One-way from

$511
(Kiwi.com)

Popular in

April

Cheapest in

January

Average price

$2,307
Provider with most accurate pricing for Chicago (CHI)-Bilbao flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Bilbao flights.
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From Illinois to Bilbao
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One-way flight from Illinois to Bilbao
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Highest demand for flights based on searches. 30% potential increase in price ($443 potential increase over avg. RT price).
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Cheapest flight prices on average. 14% potential price decrease ($131 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Illinois to Bilbao

Cheapest flights from Illinois to Bilbao
Explore the most affordable flight options available from Illinois to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This FlightHub deal was found by Cheapflights users on 4/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/307:50 pmORD - BIO
1 stop38h 35mTurkish Airlines
Wed 10/86:25 pmBIO - ORD
1 stop22h 15mTurkish Airlines
Deal found 4/29$594
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 9/301:15 pmORD - BIO
2 stops16h 30mAmerican Airlines
Wed 10/89:15 amBIO - ORD
2 stops17h 15mAmerican Airlines
Deal found 4/29$603
This Finnair deal was found by Cheapflights users on 4/29. 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.
Sun 10/54:17 pmSTL - BIO
2 stops22h 38mMultiple Airlines
Wed 10/156:45 amBIO - STL
2 stops24h 04mMultiple Airlines
Deal found 4/29$608
This FlightHub deal was found by Cheapflights users on 4/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/53:30 pmSTL - BIO
1 stop14h 55mLufthansa
Wed 10/156:45 amBIO - STL
1 stop13h 45mLufthansa
Deal found 4/29$645
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Fri 10/312:24 pmORD - BIO
2 stops14h 31mUnited Airlines
Sun 11/96:45 amBIO - ORD
2 stops19h 47mUnited Airlines
Deal found 4/29$740
This FlightHub deal was found by Cheapflights users on 4/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/307:15 pmORD - BIO
1 stop31h 45mScandinavian Airlines
Wed 9/106:50 amBIO - ORD
2 stops40h 20mScandinavian Airlines
Deal found 4/29$792
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/135:05 amORD - BIO
3 stops30h 45mMultiple Airlines
Fri 5/301:10 pmBIO - ORD
2 stops25h 17mMultiple Airlines
Deal found 4/28$798
This Justfly.com deal was found by Cheapflights users on 4/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/286:10 pmORD - BIO
1 stop16h 50mTAP AIR PORTUGAL
Sun 8/107:45 pmBIO - ORD
1 stop27h 55mTAP AIR PORTUGAL
Deal found 4/29$833
This Iberia deal was found by Cheapflights users on 4/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/3010:35 pmORD - BIO
1 stop26h 55mIberia
Wed 9/109:15 amBIO - ORD
1 stop12h 00mIberia
Deal found 4/29$912
This Delta deal was found by Cheapflights users on 4/29. 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.
Sun 7/275:10 pmORD - BIO
1 stop11h 10mDelta
Mon 8/1112:00 pmBIO - ORD
1 stop33h 10mDelta
Deal found 4/29$918
This Delta deal was found by Cheapflights users on 4/29. 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.
Sun 7/271:09 pmMDW - BIO
2 stops15h 11mDelta
Wed 8/66:50 amBIO - MDW
2 stops17h 49mDelta
Deal found 4/29$932
This Mytrip deal was found by Cheapflights users on 4/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/43:02 pmMDW - BIO
3 stops22h 03mMultiple Airlines
Tue 5/207:15 pmBIO - MDW
3 stops28h 39mMultiple Airlines
Deal found 4/29$958

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Bilbao 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 April 29, 2025.
Use the filters below to find and compare flights from Illinois to Bilbao that are best for you.

Fly from

Illinois

Fly to

Bilbao

Route

Depart

Return

Price

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 9/30

7:50 pm-5:25 pm

1 stop38h 35m

Bilbao

Wed 10/8

6:25 pm-9:40 am

1 stop22h 15m

$594

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 9/30

1:15 pm-12:45 pm

2 stops16h 30m

Bilbao

Wed 10/8

9:15 am-7:30 pm

2 stops17h 15m

$603

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Fri 10/17

9:40 pm-5:50 pm

1 stop13h 10m

Bilbao

Sun 10/26

6:45 am-2:25 pm

1 stop13h 40m

$743

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sat 8/30

7:15 pm-10:00 am

1 stop31h 45m

Bilbao

Wed 9/10

6:50 am-4:10 pm

2 stops40h 20m

$792

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 5/13

5:05 am-6:50 pm

3 stops30h 45m

Bilbao

Fri 5/30

1:10 pm-7:27 am

2 stops25h 17m

$798

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 7/28

6:10 pm-6:00 pm

1 stop16h 50m

Bilbao

Sun 8/10

7:45 pm-4:40 pm

1 stop27h 55m

$833

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sat 8/30

10:35 pm-8:30 am

1 stop26h 55m

Bilbao

Wed 9/10

9:15 am-2:15 pm

1 stop12h 00m

$912

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 7/27

5:10 pm-11:20 am

1 stop11h 10m

Bilbao

Mon 8/11

12:00 pm-2:10 pm

1 stop33h 10m

$918

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Sun 7/27

1:09 pm-11:20 am

2 stops15h 11m

Bilbao

Wed 8/6

6:50 am-5:39 pm

2 stops17h 49m

$932

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Mon 7/28

2:20 pm-8:15 pm

1 stop22h 55m

Bilbao

Thu 8/7

8:25 am-12:10 pm

1 stop34h 45m

$964

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 23 results
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Best time to book a flight from Illinois to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from Illinois 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 Illinois to Bilbao

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

Currently, January is the cheapest month in which you can book a flight from Illinois to Bilbao (average of $541). Flying from Illinois to Bilbao in June is currently the most expensive (average of $1,178). 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.

What is the cheapest time of day to fly from IL to BIO?

Find hourly flight availability from Illinois to Bilbao. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

When flying from Illinois to Bilbao, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Bilbao by month

Plan your trip to Bilbao by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bilbao ranges from 2.4 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Bilbao when rainfall is around 2.4 in.

Temperature in Bilbao by month

Plan your trip to Bilbao by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bilbao, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Bilbao

Get insights into the airlines that provide service to Bilbao. 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 Bilbao. Reviews last updated April 29, 2025.
To help decide which airline to fly from Illinois to Bilbao, see what other customers have to say about Delta, KLM and Finnair. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Aeromexico
7.5
Good
1,698 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Bilbao. 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 into for flights to Bilbao from Illinois?

    For a flight from Illinois to Bilbao, you will be flying into Bilbao. Bilbao (BIO) is just 3.0 mi from the center of the city.

  • What are the cheapest airlines to fly from Illinois to Bilbao one-way?

    The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as $732. However, be on the lookout for offers from Turkish Airlines and Lufthansa, as they are both options that can get you from Illinois to Bilbao for a low price.

  • What are the most popular routes from Illinois to Bilbao?

    The most popular route from Illinois to Bilbao is Chicago O'Hare Intl - Bilbao. You may also consider Chicago Midway - Bilbao or Lambert-St Louis - Bilbao.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Illinois to Bilbao (average of $541). Flying from Illinois to Bilbao in June is currently the most expensive (average of $1,178). 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 Illinois to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Bilbao flights
John F Kennedy Intl to Bilbao flights
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John F Kennedy Intl to San Sebastian flights
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Dulles Intl to San Sebastian flights
Dallas/Fort Worth to Bilbao flights
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Top 4 airlines flying from Illinois to Bilbao

Discover the top 4 airlines that operate flights from Illinois to Bilbao. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$567Average$1,046FlexibilityNo cancel feeOn-time75%
IberiaCheapest$578Average$894FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$639Average$1,101FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$646Average$990FlexibilityNo cancel feeOn-time76%

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