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

SWISS and Delta are the most popular carriers operating from Chicago to Bilbao

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

Munich (MUC) has the shortest average layover time for this route: 2h 10m.

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

Frankfurt am Main (FRA) was the most common stop: 45% of momondo users choosing 1-stop flights on this route connected there.

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

Flights via Istanbul (IST) offer the lowest average round-trip price of $639.

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

Flights connecting via Frankfurt am Main (FRA) have the shortest average one-way travel time: 13h 06m.

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 2 as of September 2026.

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.

$444 Cheap Flights from Chicago to Bilbao in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago to Bilbao

Round-trip

One-way

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Cheap round-trip flights

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4:55 pm - 8:05 pmORD Chicago O'Hare Intl-BIO Bilbao

21h 10m2 stops Dublin Madrid Barajas

2:35 pm - 3:30 pmBIO Bilbao-ORD Chicago O'Hare Intl

31h 55m2 stops Barcelona-El Prat Lisbon Humberto Delgado

$686Multiple Airlines

Sun, Oct 25 - Tue, Nov 10

12:45 pm - 10:55 amORD Chicago O'Hare Intl-BIO Bilbao

16h 10m1 stop Istanbul

11:55 am - 10:00 amBIO Bilbao-ORD Chicago O'Hare Intl

29h 05m1 stop Istanbul

$703Turkish Airlines

Sun, Oct 25 - Tue, Nov 10

11:25 am - 5:25 pmORD Chicago O'Hare Intl-BIO Bilbao

23h 00m1 stop Istanbul

11:55 am - 11:00 amBIO Bilbao-ORD Chicago O'Hare Intl

29h 05m1 stop Istanbul

$704Turkish Airlines

Tue, Oct 20 - Tue, Oct 27

11:45 am - 4:15 pmORD Chicago O'Hare Intl-BIO Bilbao

21h 30m1 stop Istanbul

11:55 am - 6:20 pmBIO Bilbao-ORD Chicago O'Hare Intl

37h 25m1 stop Istanbul

$724Turkish Airlines

Wed, Nov 25 - Tue, Dec 1

9:50 pm - 9:55 pmORD Chicago O'Hare Intl-BIO Bilbao

17h 05m1 stop Munich Franz Josef Strauss

6:45 am - 10:15 pmBIO Bilbao-ORD Chicago O'Hare Intl

22h 30m3 stops Frankfurt am Main Boston Logan Intl Newark

$769United Airlines

Sun, Dec 27 - Thu, Dec 31

9:50 pm - 9:55 pmORD Chicago O'Hare Intl-BIO Bilbao

17h 05m1 stop Munich Franz Josef Strauss

11:45 am - 11:37 amBIO Bilbao-ORD Chicago O'Hare Intl

30h 52m2 stops Munich Franz Josef Strauss Washington, D.C. Dulles Intl

$775United Airlines

Sun, Dec 27 - Thu, Dec 31

7:00 am - 10:50 pmORD Chicago O'Hare Intl-BIO Bilbao

32h 50m2 stops Newark Frankfurt am Main

6:45 am - 10:15 pmBIO Bilbao-ORD Chicago O'Hare Intl

22h 30m3 stops Frankfurt am Main Boston Logan Intl Newark

$786United Airlines

Sun, Dec 27 - Thu, Dec 31

3:35 pm - 5:55 pmORD Chicago O'Hare Intl-BIO Bilbao

19h 20m1 stop Munich Franz Josef Strauss

11:10 am - 7:55 pmBIO Bilbao-ORD Chicago O'Hare Intl

15h 45m1 stop Frankfurt am Main

$825Lufthansa

Fri, Oct 9 - Tue, Oct 20

3:35 pm - 5:55 pmORD Chicago O'Hare Intl-BIO Bilbao

19h 20m1 stop Munich Franz Josef Strauss

6:50 am - 12:55 pmBIO Bilbao-ORD Chicago O'Hare Intl

13h 05m1 stop Frankfurt am Main

$825Lufthansa

Sun, Oct 4 - Sun, Oct 11

9:50 pm - 11:10 pmORD Chicago O'Hare Intl-BIO Bilbao

18h 20m1 stop Munich Franz Josef Strauss

6:30 pm - 6:25 pmBIO Bilbao-ORD Chicago O'Hare Intl

30h 55m1 stop Munich Franz Josef Strauss

$835Lufthansa

Mon, Nov 23 - Mon, Nov 30

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Turkish Airlines flights from Chicago to Bilbao

Our best Turkish Airlines deals on Chicago to Bilbao flight tickets

Turkish Airlines

Oct 25

ORD12:45 pmChicago O'Hare Intl

16h 10m

1 stop

BIO10:55 amBilbao

Nov 10

BIO11:55 amBilbao

29h 05m

1 stop

ORD10:00 amChicago O'Hare Intl

$703

Turkish Airlines

Oct 20

ORD11:25 amChicago O'Hare Intl

23h 00m

1 stop

BIO5:25 pmBilbao

Oct 27

BIO11:55 amBilbao

29h 05m

1 stop

ORD11:00 amChicago O'Hare Intl

$704

Turkish Airlines

Oct 20

ORD11:25 amChicago O'Hare Intl

23h 00m

1 stop

BIO5:25 pmBilbao

Oct 29

BIO5:15 pmBilbao

23h 45m

1 stop

ORD11:00 amChicago O'Hare Intl

$724

KLM flights from Chicago to Bilbao

Our best KLM deals on Chicago to Bilbao flight tickets

KLM

Oct 25

ORD7:25 pmChicago O'Hare Intl

16h 00m

1 stop

BIO5:25 pmBilbao

Nov 10

BIO6:50 amBilbao

16h 51m

2 stops

ORD4:41 pmChicago O'Hare Intl

$794

KLM

Nov 25

ORD1:35 pmChicago O'Hare Intl

15h 10m

2 stops

BIO11:45 amBilbao

Dec 1

BIO7:10 amBilbao

16h 05m

1 stop

ORD4:15 pmChicago O'Hare Intl

$808

KLM

Nov 5

ORD1:50 pmChicago O'Hare Intl

15h 10m

2 stops

BIO12:00 pmBilbao

Nov 10

BIO6:50 amBilbao

16h 51m

2 stops

ORD4:41 pmChicago O'Hare Intl

$831

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Sun 10/25

4:55 pm-8:05 pm

2 stops21h 10m

Bilbao

Tue 11/10

2:35 pm-3:30 pm

2 stops31h 55m

$686

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Sun 10/25

12:45 pm-10:55 am

1 stop16h 10m

Bilbao

Tue 11/10

11:55 am-10:00 am

1 stop29h 05m

$703

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Tue 10/20

11:25 am-5:25 pm

1 stop23h 00m

Bilbao

Tue 10/27

11:55 am-11:00 am

1 stop29h 05m

$704

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Wed 11/25

11:45 am-4:15 pm

1 stop21h 30m

Bilbao

Tue 12/1

11:55 am-6:20 pm

1 stop37h 25m

$724

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Sun 12/27

9:50 pm-9:55 pm

1 stop17h 05m

Bilbao

Thu 12/31

6:45 am-10:15 pm

3 stops22h 30m

$769

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Sun 12/27

9:50 pm-9:55 pm

1 stop17h 05m

Bilbao

Thu 12/31

11:45 am-11:37 am

2 stops30h 52m

$775

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Sun 12/27

7:00 am-10:50 pm

2 stops32h 50m

Bilbao

Thu 12/31

6:45 am-10:15 pm

3 stops22h 30m

$786

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Fri 10/9

3:35 pm-5:55 pm

1 stop19h 20m

Bilbao

Tue 10/20

11:10 am-7:55 pm

1 stop15h 45m

$825

Quickest round-trip

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Sun 10/4

3:35 pm-5:55 pm

1 stop19h 20m

Bilbao

Sun 10/11

6:50 am-12:55 pm

1 stop13h 05m

$825

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Mon 11/23

9:50 pm-11:10 pm

1 stop18h 20m

Bilbao

Mon 11/30

6:30 pm-6:25 pm

1 stop30h 55m

$835

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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 cheapest month to fly to Bilbao?

The cheapest month to fly to Bilbao from Chicago is in March. Flight prices, which tend to average around $640, are often lower during this time because this is during the off-season. If you’re not able to fly to Bilbao in March, then February is your next best option. Flight prices from Chicago to Bilbao during February average around $739.

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

Best Price Found	$444
Fastest flight time	14h 48m
Direct flights	None

The best one-way flight to Bilbao from Chicago in the past 72 hours is $444. The best round-trip flight deal from Chicago to Bilbao found on momondo in the last 72 hours is $686.

The fastest flight from Chicago to Bilbao takes 14h 48m

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

Search flight deals

Frequently asked questions about flying from Chicago to Bilbao

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 14h 48m.
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 2 as of September 2026.
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.

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
Lufthansa	PriceFrom $584	Free Cancellation	Rating 6.8 8,224 reviews		Search Lufthansa flights
United Airlines	PriceFrom $699	Free Cancellation	Rating 7.4 10,173 reviews		Search United Airlines flights

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Laredo

Lekeitio

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.

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Cheap flights from Chicago to Bilbao from $444

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Bilbao departing on 10/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Turkish Airlines flights from Chicago to Bilbao

Our best Turkish Airlines deals on Chicago to Bilbao flight tickets

KLM flights from Chicago to Bilbao

Our best KLM deals on Chicago to Bilbao flight tickets

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How to get the cheapest flight ticket from Chicago to Bilbao

What is the cheapest month to fly to Bilbao?

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

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

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

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

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

When to book flights from Chicago to Bilbao

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Chicago to Bilbao

Best airlines flying from Chicago to Bilbao

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

Traveling to a place near Bilbao?

Why use momondo?

An easier way to manage your Bilbao trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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List of cabin classes available on flights landing in Bilbao. Availability may vary depending on flight origin and airline.

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