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Bilbao

$361+ 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 7/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BIO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$500
(FlightHub)

One-way from

$361
(Mytrip)

Popular in

April

Cheapest in

January

Average price

$1,135
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. 32% potential increase in price ($471 potential increase over avg. RT price).
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Cheapest flight prices on average. 16% potential price decrease ($134 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:20 pmORD - BIO
1 stop16h 20mScandinavian Airlines
Fri 1/97:30 pmBIO - ORD
1 stop28h 15mScandinavian Airlines
Deal found 6/11$399
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:10 pmORD - BIO
1 stop16h 50mTAP AIR PORTUGAL
Sun 9/147:45 pmBIO - ORD
1 stop27h 55mTAP AIR PORTUGAL
Deal found 6/11$500
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/76:00 pmORD - BIO
2 stops17h 55mMultiple Airlines
Sat 9/1310:25 pmBIO - ORD
2 stops49h 15mMultiple Airlines
Deal found 6/11$551
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/54:30 pmORD - BIO
1 stop13h 15mIberia
Wed 10/229:15 amBIO - ORD
1 stop12h 00mIberia
Deal found 6/12$583
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.
Wed 10/19:40 pmORD - BIO
1 stop18h 45mUnited Airlines
Wed 10/86:45 amBIO - ORD
2 stops20h 26mUnited Airlines
Deal found 6/12$589
This FlightHub 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 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 6/12$592
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/512:25 pmSTL - BIO
2 stops22h 25mUnited Airlines
Wed 10/156:45 amBIO - STL
1 stop13h 45mUnited Airlines
Deal found 6/10$594
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.
Sun 10/51:30 pmSTL - BIO
2 stops19h 35mAir Canada
Wed 10/156:45 amBIO - STL
2 stops15h 33mAir Canada
Deal found 6/12$601
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/289:50 pmORD - BIO
1 stop13h 15mLufthansa
Thu 1/86:50 pmBIO - ORD
1 stop30h 35mLufthansa
Deal found 6/11$602
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/283:35 pmORD - BIO
2 stops38h 15mAir Canada
Tue 12/912:50 pmBIO - ORD
2 stops30h 09mAir Canada
Deal found 6/10$606
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:45 pmORD - BIO
1 stop28h 20mTurkish Airlines
Wed 10/86:25 pmBIO - ORD
1 stop22h 15mTurkish Airlines
Deal found 6/12$611
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1410:35 pmORD - BIO
2 stops15h 15mAmerican Airlines
Sun 9/219:15 amBIO - ORD
1 stop12h 00mAmerican Airlines
Deal found 6/11$722

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 June 12, 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

Mon 9/8

6:10 pm-6:00 pm

1 stop16h 50m

Bilbao

Sun 9/14

7:45 pm-4:40 pm

1 stop27h 55m

$500

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 9/7

6:00 pm-6:55 pm

2 stops17h 55m

Bilbao

Sat 9/13

10:25 pm-4:40 pm

2 stops49h 15m

$551

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 10/5

4:30 pm-12:45 pm

1 stop13h 15m

Bilbao

Wed 10/22

9:15 am-2:15 pm

1 stop12h 00m

$583

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 10/1

9:40 pm-11:25 pm

1 stop18h 45m

Bilbao

Wed 10/8

6:45 am-8:11 pm

2 stops20h 26m

$589

St. LouisBilbao

STL - BIO

STLBIO

Lambert-St Louis

Sun 10/5

3:30 pm-1:25 pm

1 stop14h 55m

Bilbao

Wed 10/15

6:45 am-1:30 pm

1 stop13h 45m

$592

St. LouisBilbao

STL - BIO

STLBIO

Lambert-St Louis

Sun 10/5

12:25 pm-5:50 pm

2 stops22h 25m

Bilbao

Wed 10/15

6:45 am-1:30 pm

1 stop13h 45m

$594

St. LouisBilbao

STL - BIO

STLBIO

Lambert-St Louis

Sun 10/5

1:30 pm-4:05 pm

2 stops19h 35m

Bilbao

Wed 10/15

6:45 am-3:18 pm

2 stops15h 33m

$601

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Fri 11/28

3:35 pm-12:50 pm

2 stops38h 15m

Bilbao

Tue 12/9

12:50 pm-11:59 am

2 stops30h 09m

$606

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 10/1

11:45 pm-11:05 am

1 stop28h 20m

Bilbao

Wed 10/8

6:25 pm-9:40 am

1 stop22h 15m

$611

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Fri 11/28

9:50 pm-11:05 pm

1 stop18h 15m

Bilbao

Wed 12/10

12:45 pm-8:05 pm

1 stop14h 20m

$617

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 34 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 $1,139). 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 June 12, 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 June 12, 2025.
To help decide which airline to fly from Illinois to Bilbao, see what other customers have to say about Delta, KLM and Austrian Airlines. 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
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

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
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

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
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

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!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

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!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

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
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

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 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 $400. However, be on the lookout for offers from Air Canada and United Airlines, 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 $1,139). 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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San Francisco to Bilbao flights
John F Kennedy Intl to San Sebastian flights
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Baltimore to Bilbao flights
Dallas/Fort Worth to San Sebastian flights
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Los Angeles to San Sebastian flights
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Boston to San Sebastian flights
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LaGuardia to San Sebastian flights
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O'Hare Intl to San Sebastian flights
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Dallas/Fort Worth to Bilbao flights
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Omaha to Bilbao flights
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Midway 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$567Average$927FlexibilityNo cancel feeOn-time75%
IberiaCheapest$612Average$894FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$639Average$1,041FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$646Average$936FlexibilityNo cancel feeOn-time76%

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