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Bilbao

$297+ 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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BIO
Jul 14 — Jul 211
Mon 7/14
Mon 7/21
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 July 9, 2025.

Round-trip from

$471
(Trip.com)

One-way from

$297
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,117
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. 18% potential increase in price ($194 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 9, 2025.

This Trip.com deal was found by Cheapflights users on 7/8. 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.
Fri 8/226:00 pmORD - BIO
2 stops19h 05mMultiple Airlines
Fri 8/298:20 amBIO - ORD
2 stops39h 10mMultiple Airlines
Deal found 7/8$471
This Flightnetwork deal was found by Cheapflights users on 7/9. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/236:15 pmORD - BIO
1 stop16h 50mTAP AIR PORTUGAL
Sat 8/306:35 pmBIO - ORD
1 stop28h 40mTAP AIR PORTUGAL
Deal found 7/9$500
This FlightHub deal was found by Cheapflights users on 7/7. 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 10/811:25 amORD - BIO
1 stop23h 00mTurkish Airlines
Tue 10/1412:05 pmBIO - ORD
1 stop28h 35mTurkish Airlines
Deal found 7/7$582
This American Airlines deal was found by Cheapflights users on 7/7. 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.
Wed 10/81:43 pmORD - BIO
2 stops16h 02mAmerican Airlines
Tue 10/149:15 amBIO - ORD
1 stop16h 00mAmerican Airlines
Deal found 7/7$594
This FlightHub deal was found by Cheapflights users on 7/7. 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 10/110:30 pmORD - BIO
1 stop16h 55mLufthansa
Wed 10/152:10 pmBIO - ORD
1 stop12h 45mLufthansa
Deal found 7/7$595
This Gurufare deal was found by Cheapflights users on 7/7. 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 11/18:34 pmORD - BIO
2 stops34h 16mBritish Airways
Mon 11/109:15 amBIO - ORD
2 stops17h 50mBritish Airways
Deal found 7/7$660
This United Airlines deal was found by Cheapflights users on 7/7. 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.
Sat 11/14:20 pmORD - BIO
1 stop18h 20mUnited Airlines
Mon 11/1012:50 pmBIO - ORD
1 stop31h 20mUnited Airlines
Deal found 7/7$665
This Finnair deal was found by Cheapflights users on 7/7. 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 8/1010:30 pmORD - BIO
1 stop16h 25mFinnair
Thu 8/216:45 amBIO - ORD
1 stop19h 05mFinnair
Deal found 7/7$670
This Air Canada deal was found by Cheapflights users on 7/9. 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.
Tue 9/210:40 amORD - BIO
2 stops24h 10mAir Canada
Tue 9/166:45 amBIO - ORD
2 stops20h 26mAir Canada
Deal found 7/9$671
This Iberia deal was found by Cheapflights users on 7/9. 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.
Wed 9/310:25 pmORD - BIO
2 stops27h 55mIberia
Tue 9/169:15 amBIO - ORD
1 stop12h 00mIberia
Deal found 7/9$678
This KAYAK deal was found by Cheapflights users on 7/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/67:15 pmORD - BIO
1 stop31h 45mScandinavian Airlines
Fri 9/128:40 pmBIO - ORD
1 stop26h 30mScandinavian Airlines
Deal found 7/9$709

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 July 9, 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

Fri 8/22

6:00 pm-8:05 pm

2 stops19h 05m

Bilbao

Fri 8/29

8:20 am-4:30 pm

2 stops39h 10m

$471

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sat 8/23

6:15 pm-6:05 pm

1 stop16h 50m

Bilbao

Sat 8/30

6:35 pm-4:15 pm

1 stop28h 40m

$500

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 10/8

11:25 am-5:25 pm

1 stop23h 00m

Bilbao

Tue 10/14

12:05 pm-9:40 am

1 stop28h 35m

$582

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 10/8

1:43 pm-12:45 pm

2 stops16h 02m

Bilbao

Tue 10/14

9:15 am-6:15 pm

1 stop16h 00m

$594

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 10/1

10:30 pm-10:25 pm

1 stop16h 55m

Bilbao

Wed 10/15

2:10 pm-7:55 pm

1 stop12h 45m

$595

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sat 11/1

8:34 pm-12:50 pm

2 stops34h 16m

Bilbao

Mon 11/10

9:15 am-8:05 pm

2 stops17h 50m

$660

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sat 11/1

4:20 pm-4:40 pm

1 stop18h 20m

Bilbao

Mon 11/10

12:50 pm-1:10 pm

1 stop31h 20m

$665

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 8/10

10:30 pm-9:55 pm

1 stop16h 25m

Bilbao

Thu 8/21

6:45 am-6:50 pm

1 stop19h 05m

$670

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 9/2

10:40 am-5:50 pm

2 stops24h 10m

Bilbao

Tue 9/16

6:45 am-8:11 pm

2 stops20h 26m

$671

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 9/3

10:25 pm-9:20 am

2 stops27h 55m

Bilbao

Tue 9/16

9:15 am-2:15 pm

1 stop12h 00m

$678

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 19 results
1
2

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, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Bilbao (average of $541). Flying from Chicago O'Hare Intl Airport to Bilbao in June is currently the most expensive (average of $1,137). 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 July 9, 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 41% versus a flight in the afternoon.

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 July 9, 2025.
Peruse reviews from past customers who have flown with Delta, Finnair, and Aeromexico 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.
Delta
8.0
Very good
7,958 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

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
7,958 reviews
Delta
8.0
Very good
7,958 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

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
1,312 reviews
Delta
8.0
Very good
7,958 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

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!
Aeromexico
7.5
Good
1,719 reviews
Delta
8.0
Very good
7,958 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

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
8,843 reviews
Delta
8.0
Very good
7,958 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

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
3,896 reviews
Delta
8.0
Very good
7,958 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

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 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 4 different airlines.

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

    Flying on TAP AIR PORTUGAL is currently your cheapest option to Bilbao, with prices starting at $500. Additional round-trip tickets that might be worth considering are offered by Lufthansa and Finnair, with the lowest prices starting at $595 and $670, respectively. Users have found that TAP AIR PORTUGAL is 43% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Bilbao one-way?

    The cheapest airlines for a one-way flight from Chicago O'Hare Intl Airport to Bilbao are TAP AIR PORTUGAL ($402), Aer Lingus ($455), and United Airlines ($518).

  • 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, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Bilbao (average of $541). Flying from Chicago O'Hare Intl Airport to Bilbao in June is currently the most expensive (average of $1,137). 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.
O'Hare Intl to San Sebastian flights
Midway to Bilbao flights

Top 4 airlines flying from O'Hare Intl to Bilbao

Discover the top 4 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 July 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$567Average$927FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$639Average$887FlexibilityNo cancel feeOn-time69%
IberiaCheapest$640Average$918FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$646Average$856FlexibilityNo cancel feeOn-time76%

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