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Bilbao

$529+ Cheap flights from O'Hare Intl (ORD) to Bilbao (BIO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BIO
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 29, 2025.

Round-trip from

$529
(FlightHub)

Popular in

July

Cheapest in

February

Average price

$1,147
From Chicago O'Hare Intl to Bilbao
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Highest demand for flights based on searches. 16% potential increase in price ($169 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($25 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 29, 2025.

This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1511:45 pmORD - BIO
1 stop34h 40mTurkish Airlines
Wed 9/246:25 pmBIO - ORD
1 stop22h 15mTurkish Airlines
Deal found 7/28$529
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/117:15 amORD - BIO
2 stops26h 25mUnited Airlines
Tue 11/186:40 amBIO - ORD
1 stop15h 40mUnited Airlines
Deal found 7/29$595
This Vueling Global 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 Vueling Global is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/74:30 pmORD - BIO
2 stops22h 15mMultiple Airlines
Mon 10/1310:20 pmBIO - ORD
2 stops22h 55mMultiple Airlines
Deal found 7/28$597
This Gurufare 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/19:08 pmORD - BIO
2 stops32h 57mLufthansa
Mon 11/105:30 pmBIO - ORD
1 stop26h 40mLufthansa
Deal found 7/29$647
This TAP AIR PORTUGAL 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/148:25 pmORD - BIO
1 stop15h 10mTAP AIR PORTUGAL
Tue 12/306:40 pmBIO - ORD
1 stop27h 20mTAP AIR PORTUGAL
Deal found 7/27$653
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/12:00 pmORD - BIO
2 stops20h 40mAir Canada
Mon 11/1012:50 pmBIO - ORD
2 stops37h 40mAir Canada
Deal found 7/29$678
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1110:36 amORD - BIO
2 stops16h 49mDelta
Sun 10/197:10 amBIO - ORD
1 stop14h 50mDelta
Deal found 7/27$711
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.
Fri 9/129:24 amORD - BIO
2 stops16h 06mAmerican Airlines
Fri 9/196:45 amBIO - ORD
1 stop19h 05mAmerican Airlines
Deal found 7/29$730
This SWISS 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:50 pmORD - BIO
1 stop17h 40mSWISS
Mon 12/2911:35 amBIO - ORD
2 stops35h 45mSWISS
Deal found 7/27$749
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.
Sat 11/15:40 pmORD - BIO
2 stops13h 10mIberia
Mon 11/109:15 amBIO - ORD
2 stops17h 21mIberia
Deal found 7/27$754

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 29, 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

Mon 9/15

11:45 pm-5:25 pm

1 stop34h 40m

Bilbao

Wed 9/24

6:25 pm-9:40 am

1 stop22h 15m

$529

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 11/11

7:15 am-4:40 pm

2 stops26h 25m

Bilbao

Tue 11/18

6:40 am-3:20 pm

1 stop15h 40m

$595

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Tue 10/7

4:30 pm-9:45 pm

2 stops22h 15m

Bilbao

Mon 10/13

10:20 pm-2:15 pm

2 stops22h 55m

$597

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sat 11/1

9:08 pm-12:05 pm

2 stops32h 57m

Bilbao

Mon 11/10

5:30 pm-1:10 pm

1 stop26h 40m

$647

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 12/14

8:25 pm-6:35 pm

1 stop15h 10m

Bilbao

Tue 12/30

6:40 pm-3:00 pm

1 stop27h 20m

$653

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sat 11/1

2:00 pm-4:40 pm

2 stops20h 40m

Bilbao

Mon 11/10

12:50 pm-7:30 pm

2 stops37h 40m

$678

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sat 10/11

10:36 am-10:25 am

2 stops16h 49m

Bilbao

Sun 10/19

7:10 am-3:00 pm

1 stop14h 50m

$711

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Fri 9/12

9:24 am-8:30 am

2 stops16h 06m

Bilbao

Fri 9/19

6:45 am-6:50 pm

1 stop19h 05m

$730

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sat 12/13

6:50 pm-7:30 pm

1 stop17h 40m

Bilbao

Mon 12/29

11:35 am-4:20 pm

2 stops35h 45m

$749

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sat 11/1

5:40 pm-12:50 pm

2 stops13h 10m

Bilbao

Mon 11/10

9:15 am-7:36 pm

2 stops17h 21m

$754

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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 $1,135). 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 29, 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 29, 2025.
Peruse reviews from past customers who have flown with Delta, SWISS, and United Airlines 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
7,979 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
7,979 reviews
Delta
8.0
Very good
7,979 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
1,683 reviews
Delta
8.0
Very good
7,979 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
8,896 reviews
Delta
8.0
Very good
7,979 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
3,925 reviews
Delta
8.0
Very good
7,979 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,979 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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 3 different airlines.

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

    Flying on Turkish Airlines is currently your cheapest option to Bilbao, with prices starting at $529. Additional round-trip tickets that might be worth considering are offered by United Airlines and Lufthansa, with the lowest prices starting at $595 and $647, respectively. Users have found that Turkish Airlines is 39% 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, 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 $1,135). 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 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$639Average$887FlexibilityNo cancel feeOn-time69%
IberiaCheapest$640Average$909FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$646Average$856FlexibilityNo cancel feeOn-time76%

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