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$316+ Cheap flights from O'Hare Intl (ORD) 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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BIO
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheap flight deals from O'Hare Intl to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to Bilbao (BIO). 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$441
(FlightHub)

One-way from

$316
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$832
Provider with most accurate pricing for Chicago O'Hare Intl-Bilbao flight deals.
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Provider most trusted by Cheapflights users for Chicago O'Hare Intl-Bilbao flights.
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From Chicago O'Hare Intl to Bilbao
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One-way flight from Chicago O'Hare Intl to Bilbao
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Highest demand for flights based on searches. 16% potential increase in price ($172 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from O'Hare Intl to Bilbao

Cheapest flights from O'Hare Intl to Bilbao
Explore the most affordable flight options available from O'Hare Intl to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/254:20 pmORD - BIO
1 stop12h 45mLufthansa
Tue 12/25:40 pmBIO - ORD
1 stop26h 30mLufthansa
Deal found 10/27$508
This lol.travel deal was found by Cheapflights users on 10/26. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/309:50 pmORD - BIO
1 stop13h 15mLufthansa
Sat 12/1312:50 pmBIO - ORD
1 stop31h 20mLufthansa
Deal found 10/26$518
This Air France deal was found by Cheapflights users on 10/27. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/252:35 pmORD - BIO
2 stops13h 55mMultiple Airlines
Tue 12/25:20 pmBIO - ORD
1 stop28h 00mMultiple Airlines
Deal found 10/27$524
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2512:00 pmORD - BIO
2 stops15h 50mUnited Airlines
Tue 12/212:50 pmBIO - ORD
2 stops27h 23mUnited Airlines
Deal found 10/27$529
This Expedia deal was found by Cheapflights users on 10/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/306:50 pmORD - BIO
2 stops16h 15mMultiple Airlines
Sat 12/136:45 amBIO - ORD
2 stops18h 43mMultiple Airlines
Deal found 10/26$549
This Turkish Airlines deal was found by Cheapflights users on 10/26. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/611:50 amORD - BIO
1 stop16h 10mTurkish Airlines
Sat 11/812:00 pmBIO - ORD
1 stop29h 05mTurkish Airlines
Deal found 10/26$724
This Gurufare deal was found by Cheapflights users on 10/27. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/16:00 pmORD - BIO
2 stops42h 05mLufthansa
Mon 11/106:50 pmBIO - ORD
1 stop30h 35mLufthansa
Deal found 10/27$865

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl 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 October 28, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Bilbao that are best for you.

Fly from

O'Hare Intl

Fly to

Bilbao

Route

Depart

Return

Price

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 11/25

4:20 pm-12:05 pm

1 stop12h 45m

Bilbao

Tue 12/2

5:40 pm-1:10 pm

1 stop26h 30m

$508

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 1/14

9:50 pm-6:05 pm

1 stop13h 15m

Bilbao

Mon 1/19

6:50 pm-6:25 pm

1 stop30h 35m

$517

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Thu 1/29

5:20 pm-11:30 am

1 stop11h 10m

Bilbao

Mon 2/9

6:50 am-2:20 pm

1 stop14h 30m

$519

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 11/25

2:35 pm-11:30 am

2 stops13h 55m

Bilbao

Tue 12/2

5:20 pm-2:20 pm

1 stop28h 00m

$524

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 11/25

12:00 pm-10:50 am

2 stops15h 50m

Bilbao

Tue 12/2

12:50 pm-9:13 am

2 stops27h 23m

$529

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 2/3

9:50 pm-9:55 pm

1 stop17h 05m

Bilbao

Tue 3/24

6:45 am-2:10 pm

1 stop13h 25m

$540

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 2/15

8:25 pm-6:35 pm

1 stop15h 10m

Bilbao

Thu 2/19

12:10 pm-3:25 pm

1 stop34h 15m

$552

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 2/3

2:27 pm-12:50 pm

2 stops15h 23m

Bilbao

Tue 3/24

6:45 am-6:45 pm

2 stops18h 00m

$560

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 3/3

10:35 am-12:50 pm

2 stops19h 15m

Bilbao

Tue 3/17

6:45 am-2:10 pm

1 stop13h 25m

$571

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 1/14

7:15 am-11:45 am

2 stops21h 30m

Bilbao

Mon 1/19

9:05 pm-2:55 pm

3 stops24h 50m

$587

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 13 results
1
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Compare providers for flights from O'Hare Intl to Bilbao

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to Bilbao in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-Bilbao flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chicago O'Hare Intl Airport-Bilbao flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-Bilbao flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-Bilbao flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-Bilbao flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from O'Hare Intl to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from O'Hare Intl 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 Chicago O'Hare Intl Airport to Bilbao

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Bilbao?

Currently, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Bilbao (average of $547). Flying from Chicago O'Hare Intl Airport to Bilbao in July is currently the most expensive (average of $871). 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 ORD to BIO?

Find hourly flight availability from O'Hare Intl 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 October 28, 2025.

When flying from Chicago O'Hare Intl Airport to Bilbao, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 40% versus a flight in the evening.

How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to Bilbao?

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 October 28, 2025.
Peruse reviews from past customers who have flown with United Airlines, Iberia, and Lufthansa from Chicago O'Hare Intl Airport to Bilbao to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,001 reviews

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,001 reviews
United Airlines
7.4
Good
9,001 reviews

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Iberia
7.0
Good
3,001 reviews
United Airlines
7.4
Good
9,001 reviews

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Lufthansa
6.8
Okay
7,535 reviews
United Airlines
7.4
Good
9,001 reviews

Crew

8.1

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl 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 Chicago O'Hare Intl?

    Located just 3.0 mi from the city center, Bilbao is the airport most travelers will use when flying to Bilbao from Chicago O'Hare Intl. Booking flights from Chicago O'Hare Intl to Bilbao (BIO) should be relatively easy as there are 0 daily inbound flights from Chicago O'Hare Intl from 3 different airlines.

  • How long is the flight from Chicago O'Hare Intl Airport to Bilbao?

    Departing from Chicago O'Hare Intl Airport to Bilbao will take you 12h 45m. The distance between Chicago O'Hare Intl Airport and Bilbao is about 4116 mi.

  • What are the cheapest airlines flying from Chicago O'Hare Intl Airport to Bilbao round-trip?

    Flying on Iberia is currently your cheapest option to Bilbao, with prices starting at $612. Additional round-trip tickets that might be worth considering are offered by United Airlines and Lufthansa, with the lowest prices starting at $639 and $698, respectively. Users have found that Iberia is 28% cheaper than the other options available to this destination.

  • Can I find deals for flights from O'Hare Intl to Bilbao that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Bilbao flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Bilbao?

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

  • Can I find deals for business class flights from O'Hare Intl to Bilbao?

    Yes. Cheapflights offers flight deals from O'Hare Intl 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 Chicago O'Hare Intl Airport to Bilbao?

    Currently, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Bilbao (average of $547). Flying from Chicago O'Hare Intl Airport to Bilbao in July is currently the most expensive (average of $871). 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 O'Hare Intl to Bilbao

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

Top 3 airlines flying from O'Hare Intl to Bilbao

Discover the top 3 airlines that operate flights from O'Hare Intl 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$612Average$864FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$639Average$887FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$698Average$881FlexibilityNo cancel feeOn-time76%

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