Which layover airport has the shortest connection time from Chicago to Bilbao?

Madrid (MAD) has the shortest average layover time for this route: 1h 50m.

Which airport is the most popular layover for flights between Chicago and Bilbao?

Frankfurt am Main (FRA) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Chicago to Bilbao?

Flights connecting via Paris (CDG) have the shortest average one-way travel time: 11h 10m.

What airlines fly to Bilbao?

Iberia, Lufthansa and United Airlines are the top three most popular airlines that fly to Bilbao from Chicago according to our data. Iberia is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Bilbao. Keep in mind that there are 4 different airlines that fly to Bilbao on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Chicago to Bilbao?

Delta is the most popular carrier operating from Chicago to Bilbao

Which layover airport offers the lowest fares from Chicago to Bilbao?

Flights via Munich (MUC) offer the lowest average round-trip price of $817.

When did momondo last update prices for flights from Chicago to Bilbao Airport?

Prices for flights from Chicago to Bilbao Airport were last updated today.

How many operators does momondo search for flights from Chicago to Bilbao Airport?

The number of operators available for flights from Chicago to Bilbao Airport is 3 as of November 2025.

How old do you have to be to fly from Chicago to Bilbao Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Bilbao Airport.

What documentation or ID do you need to fly to Bilbao Airport?

The necessary travel and health documents for your Bilbao Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$297 Cheap Flights from Chicago to Bilbao in 2025/26

Q: What is the typical price of a round-trip flight between Chicago and Bilbao?

Prices are currently low for flights on this route. Typical prices usually range from $933 to $1,301. The lowest price recently found on this route was $439.

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Find the cheapest flights from Chicago to Bilbao

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:25 pm - 6:35 pmORD-BIO

15h 10m1 stop

12:10 pm - 2:45 pmBIO-ORD

33h 35m1 stop

$439TAP AIR PORTUGAL

Find Deal

Sun, Mar 1 - Sat, Mar 7

7:15 pm - 11:35 amORD-BIO

33h 20m1 stop

9:25 pm - 4:10 pmBIO-ORD

25h 45m1 stop

$505Scandinavian Airlines

Find Deal

Sat, Apr 25 - Sun, May 17

5:55 pm - 4:10 pmORD-BIO

15h 15m1 stop

6:45 am - 1:10 pmBIO-ORD

13h 25m1 stop

$521United Airlines

Find Deal

Wed, Jan 28 - Sun, Feb 1

6:00 pm - 11:20 pmORD-BIO

22h 20m1 stop

11:35 am - 6:25 pmBIO-ORD

13h 50m1 stop

$523Lufthansa

Find Deal

Fri, Jan 23 - Tue, Jan 27

8:45 am - 4:10 pmORD-BIO

24h 25m2 stops

6:45 am - 3:20 pmBIO-ORD

15h 35m1 stop

$525United Airlines

Find Deal

Wed, Jan 28 - Sun, Feb 1

5:20 pm - 5:20 pmORD-BIO

17h 00m1 stop

6:50 am - 9:43 pmBIO-ORD

21h 53m2 stops

$530Delta

Find Deal

Fri, Jan 23 - Tue, Jan 27

7:20 pm - 10:55 pmORD-BIO

20h 35m2 stops

3:10 pm - 4:45 pmBIO-ORD

32h 35m2 stops

$533Multiple Airlines

Find Deal

Sun, Mar 1 - Sat, Mar 7

6:00 pm - 6:05 pmORD-BIO

17h 05m1 stop

11:35 am - 5:55 pmBIO-ORD

61h 20m2 stops

$539Lufthansa

Find Deal

Sun, Mar 1 - Sat, Mar 7

7:05 am - 9:20 pmORD-BIO

31h 15m3 stops

7:45 pm - 4:45 pmBIO-ORD

28h 00m2 stops

$583Multiple Airlines

Find Deal

Sun, Mar 1 - Sat, Mar 7

1:26 pm - 5:20 pmMDW-BIO

20h 54m2 stops

7:25 am - 5:55 pmBIO-MDW

17h 30m2 stops

$719Delta

Find Deal

Fri, Jan 30 - Tue, Feb 3

Turkish Airlines flights from Chicago to Bilbao

Our best Turkish Airlines deals on Chicago to Bilbao flight tickets

Turkish Airlines

Mar 30

ORD11:25 amChicago O'Hare Intl

16h 30m

1 stop

BIO10:55 amBilbao

Apr 8

BIO6:20 pmBilbao

30h 55m

1 stop

ORD6:15 pmChicago O'Hare Intl

$605

Find similar

Turkish Airlines

Jan 23

ORD8:20 pmChicago O'Hare Intl

36h 50m

1 stop

BIO4:10 pmBilbao

Jan 27

BIO12:00 pmBilbao

37h 25m

1 stop

ORD6:25 pmChicago O'Hare Intl

$650

Find similar

Turkish Airlines

Jan 28

ORD11:50 amChicago O'Hare Intl

21h 20m

1 stop

BIO4:10 pmBilbao

Feb 1

BIO5:10 pmBilbao

32h 15m

1 stop

ORD6:25 pmChicago O'Hare Intl

$665

Find similar

Lufthansa flights from Chicago to Bilbao

Our best Lufthansa deals on Chicago to Bilbao flight tickets

Lufthansa

Jan 23

ORD6:00 pmChicago O'Hare Intl

22h 20m

1 stop

BIO11:20 pmBilbao

Jan 27

BIO11:35 amBilbao

13h 50m

1 stop

ORD6:25 pmChicago O'Hare Intl

$523

Find similar

Lufthansa

Mar 1

ORD6:00 pmChicago O'Hare Intl

17h 05m

1 stop

BIO6:05 pmBilbao

Mar 7

BIO11:35 amBilbao

61h 20m

2 stops

ORD5:55 pmChicago O'Hare Intl

$539

Find similar

Lufthansa

Jan 8

ORD9:50 pmChicago O'Hare Intl

17h 05m

1 stop

BIO9:55 pmBilbao

Jan 15

BIO7:40 amBilbao

17h 45m

1 stop

ORD6:25 pmChicago O'Hare Intl

$667

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 3/1

8:25 pm-6:35 pm

1 stop15h 10m

Bilbao

Sat 3/7

12:10 pm-2:45 pm

1 stop33h 35m

$439

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sat 4/25

7:15 pm-11:35 am

1 stop33h 20m

Bilbao

Sun 5/17

9:25 pm-4:10 pm

1 stop25h 45m

$505

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 1/28

5:55 pm-4:10 pm

1 stop15h 15m

Bilbao

Sun 2/1

6:45 am-1:10 pm

1 stop13h 25m

$521

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Fri 1/23

6:00 pm-11:20 pm

1 stop22h 20m

Bilbao

Tue 1/27

11:35 am-6:25 pm

1 stop13h 50m

$523

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Wed 1/28

8:45 am-4:10 pm

2 stops24h 25m

Bilbao

Sun 2/1

6:45 am-3:20 pm

1 stop15h 35m

$525

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Fri 1/23

5:20 pm-5:20 pm

1 stop17h 00m

Bilbao

Tue 1/27

6:50 am-9:43 pm

2 stops21h 53m

$530

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 3/1

7:20 pm-10:55 pm

2 stops20h 35m

Bilbao

Sat 3/7

3:10 pm-4:45 pm

2 stops32h 35m

$533

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 3/1

6:00 pm-6:05 pm

1 stop17h 05m

Bilbao

Sat 3/7

11:35 am-5:55 pm

2 stops61h 20m

$539

ChicagoBilbao

ORD - BIO

ORDBIO

Chicago O'Hare Intl

Sun 3/1

7:05 am-9:20 pm

3 stops31h 15m

Bilbao

Sat 3/7

7:45 pm-4:45 pm

2 stops28h 00m

$583

ChicagoBilbao

MDW - BIO

MDWBIO

Chicago Midway

Fri 1/30

1:26 pm-5:20 pm

2 stops20h 54m

Bilbao

Tue 2/3

7:25 am-5:55 pm

2 stops17h 30m

$719

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Chicago to Bilbao

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Chicago and Bilbao?

What is the cheapest day to depart on your flight to Bilbao?

The cheapest day to depart from Chicago to Bilbao is on a Monday. Travelers who choose to depart for Bilbao on a Monday will often find tickets for as low as $930. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,171. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bilbao.

What is the cheapest time of day to depart on your flight to Bilbao?

Our most recent data shows that the best time of day to fly to Bilbao is in the morning. Flights from Chicago to Bilbao during this time can be as low as $652. In the evening is when there is more demand to fly to Bilbao, so prices are often more expensive at around $1,100 per ticket.

When to book flights from Chicago to Bilbao

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Bilbao according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Chicago to Bilbao (CHI to BIO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Bilbao

Fastest flight time	13h 10m
Direct flights	None

The fastest flight from Chicago to Bilbao takes 13h 10m

There are no direct flights from Chicago to Bilbao. There are no popular flight routes from Chicago to Bilbao.

Search flight deals

How far is Chicago to Bilbao by plane?
The straight-line distance from Chicago to Bilbao is 4107.8 mi. A reasonable flight in good conditions will take 13h 10m.
When did momondo last update prices for flights from Chicago to Bilbao Airport?
Prices for flights from Chicago to Bilbao Airport were last updated today.
How many operators does momondo search for flights from Chicago to Bilbao Airport?
The number of operators available for flights from Chicago to Bilbao Airport is 3 as of November 2025.
How old do you have to be to fly from Chicago to Bilbao Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Bilbao Airport.
What documentation or ID do you need to fly to Bilbao Airport?
The necessary travel and health documents for your Bilbao Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Chicago to Bilbao?
Based on momondo bookings for flights between Chicago and Bilbao, the leading airline is Lufthansa, making up 53% of the total bookings. Other popular airlines include United Airlines with 47%.

Best airlines flying from Chicago to Bilbao

Compare and see reviews for airlines that fly from Chicago to Bilbao with momondo

Airline	Rating	Free Cancellation	Price
Iberia	PriceFrom $612	Free Cancellation	Rating 7.0 3,034 reviews	Search Iberia flights
Lufthansa	PriceFrom $698	Free Cancellation	Rating 6.8 7,594 reviews	Search Lufthansa flights
United Airlines	PriceFrom $699	Free Cancellation	Rating 7.4 9,046 reviews	Search United Airlines flights

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Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Bilbao?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Chicago to Bilbao for you.

Can I find flights from Chicago to Bilbao with flexible booking policies on momondo?

Yes. All flights to Bilbao from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Chicago to Bilbao?

Once you have performed a search for Chicago to Bilbao flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Chicago to Bilbao right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Chicago to Bilbao now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Bilbao and let you know when they change.