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 23m.

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

Frankfurt am Main (FRA) has the shortest average layover time for this route: 2h 25m.

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

Istanbul (IST) was the most common stop: 63% of momondo users choosing 1-stop flights on this route connected there.

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

Aer Lingus, United Airlines, and Delta are the most popular carriers operating from Chicago to Bilbao

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 October 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.

$339 Cheap Flights from Chicago to Bilbao in 2026/27

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

Enter your travel dates to find the best prices.

11:45 am - 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

$669Turkish Airlines

Sun, Nov 8 - Tue, Nov 17

8:05 pm - 12:40 pmORD Chicago O'Hare Intl-BIO Bilbao

33h 35m2 stops Dublin London Luton

6:40 pm - 3:30 pmBIO Bilbao-ORD Chicago O'Hare Intl

27h 50m1 stop Lisbon Humberto Delgado

$703Multiple Airlines

Sun, Nov 8 - Tue, Nov 17

8:10 pm - 9:10 pmORD Chicago O'Hare Intl-BIO Bilbao

18h 00m2 stops Lisbon Humberto Delgado Barcelona-El Prat

11:00 pm - 3:30 pmBIO Bilbao-ORD Chicago O'Hare Intl

23h 30m2 stops Barcelona-El Prat Lisbon Humberto Delgado

$704Multiple Airlines

Sun, Nov 8 - Tue, Nov 17

3:55 pm - 4:45 pmORD Chicago O'Hare Intl-BIO Bilbao

17h 50m2 stops Dublin London Luton

9:15 am - 2:55 pmBIO Bilbao-ORD Chicago O'Hare Intl

12h 40m1 stop Madrid Barajas

$715Multiple Airlines

Wed, Dec 2 - Mon, Dec 14

2:30 pm - 5:45 pmORD Chicago O'Hare Intl-BIO Bilbao

20h 15m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

6:45 am - 3:20 pmBIO Bilbao-ORD Chicago O'Hare Intl

15h 35m1 stop Frankfurt am Main

$777United Airlines

Wed, Dec 2 - Fri, Dec 11

3:15 pm - 5:00 pmORD Chicago O'Hare Intl-BIO Bilbao

18h 45m1 stop Frankfurt am Main

6:45 am - 1:10 pmBIO Bilbao-ORD Chicago O'Hare Intl

13h 25m1 stop Frankfurt am Main

$783United Airlines

Tue, Dec 1 - Tue, Dec 15

3:15 pm - 5:00 pmORD Chicago O'Hare Intl-BIO Bilbao

18h 45m1 stop Frankfurt am Main

6:45 am - 3:20 pmBIO Bilbao-ORD Chicago O'Hare Intl

15h 35m1 stop Frankfurt am Main

$783United Airlines

Tue, Dec 1 - Tue, Dec 8

4:20 pm - 11:40 amORD Chicago O'Hare Intl-BIO Bilbao

12h 20m1 stop Frankfurt am Main

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

30h 55m1 stop Munich Franz Josef Strauss

$793Lufthansa

Wed, Dec 2 - Mon, Dec 14

4:20 pm - 5:00 pmORD Chicago O'Hare Intl-BIO Bilbao

17h 40m1 stop Frankfurt am Main

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

30h 55m1 stop Munich Franz Josef Strauss

$800Lufthansa

Tue, Dec 1 - Mon, Dec 14

9:40 pm - 5:55 pmORD Chicago O'Hare Intl-BIO Bilbao

13h 15m1 stop Munich Franz Josef Strauss

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

13h 05m1 stop Frankfurt am Main

$808Lufthansa

Mon, Apr 5 - Sat, Apr 17

Cheap last minute flights

Enter your travel dates to find the best prices.

9:15 pm - 10:55 amORD Chicago O'Hare Intl-BIO Bilbao

31h 40m1 stop Istanbul

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

29h 05m1 stop Istanbul

$679Turkish Airlines

Sun, Oct 25 - Tue, Nov 10

9:15 pm - 10:55 amORD Chicago O'Hare Intl-BIO Bilbao

31h 40m1 stop Istanbul

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

29h 05m1 stop Istanbul

$705Turkish Airlines

Sun, Oct 25 - Tue, Nov 10

9:10 pm - 8:05 pmORD Chicago O'Hare Intl-BIO Bilbao

16h 55m2 stops Lisbon Humberto Delgado Madrid Barajas

12:35 pm - 3:30 pmBIO Bilbao-ORD Chicago O'Hare Intl

33h 55m2 stops Madrid Barajas Lisbon Humberto Delgado

$818Multiple Airlines

Sun, Oct 25 - Tue, Nov 10

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

16h 10m1 stop Istanbul

12:35 pm - 10:00 amBIO Bilbao-ORD Chicago O'Hare Intl

28h 25m2 stops Madrid Barajas Istanbul

$835Multiple Airlines

Sun, Oct 25 - Tue, Nov 10

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

16h 10m1 stop Istanbul

12:35 pm - 10:00 amBIO Bilbao-ORD Chicago O'Hare Intl

28h 25m2 stops Madrid Barajas Istanbul

$836Multiple Airlines

Sun, Oct 25 - Tue, Nov 10

9:40 pm - 11:25 pmORD Chicago O'Hare Intl-BIO Bilbao

18h 45m1 stop Munich Franz Josef Strauss

6:45 am - 2:10 pmBIO Bilbao-ORD Chicago O'Hare Intl

13h 25m1 stop Frankfurt am Main

$850Lufthansa

Tue, Oct 20 - Thu, Oct 29

7:00 pm - 9:55 pmORD Chicago O'Hare Intl-BIO Bilbao

20h 55m1 stop Munich Franz Josef Strauss

6:45 am - 1:10 pmBIO Bilbao-ORD Chicago O'Hare Intl

13h 25m1 stop Frankfurt am Main

$880United Airlines

Sun, Oct 25 - Tue, Nov 10

7:00 pm - 9:55 pmORD Chicago O'Hare Intl-BIO Bilbao

20h 55m1 stop Munich Franz Josef Strauss

6:45 am - 8:39 pmBIO Bilbao-ORD Chicago O'Hare Intl

20h 54m2 stops Frankfurt am Main Washington, D.C. Dulles Intl

$886United Airlines

Sun, Oct 25 - Tue, Nov 10

10:50 pm - 9:55 pmORD Chicago O'Hare Intl-BIO Bilbao

17h 05m1 stop Munich Franz Josef Strauss

6:45 am - 7:30 amBIO Bilbao-ORD Chicago O'Hare Intl

31h 45m2 stops Frankfurt am Main Washington, D.C. Dulles Intl

$886United Airlines

Sun, Oct 25 - Tue, Nov 10

6:45 pm - 5:00 pmORD Chicago O'Hare Intl-BIO Bilbao

16h 15m2 stops London Heathrow Frankfurt am Main

12:25 pm - 12:01 amBIO Bilbao-ORD Chicago O'Hare Intl

18h 36m2 stops Frankfurt am Main Washington, D.C. Dulles Intl

$1,017United Airlines

Sun, Oct 25 - Tue, Nov 10

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Turkish Airlines flights from Chicago to Bilbao

Our best Turkish Airlines deals on Chicago to Bilbao flight tickets

Turkish Airlines

Nov 8

ORD11:45 amChicago O'Hare Intl

16h 10m

1 stop

BIO10:55 amBilbao

Nov 17

BIO11:55 amBilbao

29h 05m

1 stop

ORD10:00 amChicago O'Hare Intl

$669

Turkish Airlines

Oct 25

ORD9:15 pmChicago O'Hare Intl

31h 40m

1 stop

BIO10:55 amBilbao

Nov 10

BIO11:55 amBilbao

29h 05m

1 stop

ORD10:00 amChicago O'Hare Intl

$679

Turkish Airlines

Oct 25

ORD9:15 pmChicago O'Hare Intl

31h 40m

1 stop

BIO10:55 amBilbao

Nov 10

BIO11:55 amBilbao

29h 05m

1 stop

ORD10:00 amChicago O'Hare Intl

$705

Delta flights from Chicago to Bilbao

Our best Delta deals on Chicago to Bilbao flight tickets

Delta

Apr 4

ORD5:10 pmChicago O'Hare Intl

17h 20m

1 stop

BIO5:30 pmBilbao

Apr 19

BIO12:00 pmBilbao

33h 15m

1 stop

ORD2:15 pmChicago O'Hare Intl

$758

Delta

Apr 5

ORD5:10 pmChicago O'Hare Intl

33h 40m

1 stop

BIO9:50 amBilbao

Apr 19

BIO12:00 pmBilbao

33h 15m

1 stop

ORD2:15 pmChicago O'Hare Intl

$760

Delta

Apr 4

ORD1:35 pmChicago O'Hare Intl

20h 55m

2 stops

BIO5:30 pmBilbao

Apr 16

BIO6:45 amBilbao

14h 30m

1 stop

ORD2:15 pmChicago O'Hare Intl

$763

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 11/8

11:45 am-10:55 am

1 stop16h 10m

Bilbao

Tue 11/17

11:55 am-10:00 am

1 stop29h 05m

$669

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Sun 11/8

8:05 pm-12:40 pm

2 stops33h 35m

Bilbao

Tue 11/17

6:40 pm-3:30 pm

1 stop27h 50m

$703

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Sun 11/8

8:10 pm-9:10 pm

2 stops18h 00m

Bilbao

Tue 11/17

11:00 pm-3:30 pm

2 stops23h 30m

$704

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Wed 12/2

3:55 pm-4:45 pm

2 stops17h 50m

Bilbao

Mon 12/14

9:15 am-2:55 pm

1 stop12h 40m

$715

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Wed 12/2

2:30 pm-5:45 pm

2 stops20h 15m

Bilbao

Fri 12/11

6:45 am-3:20 pm

1 stop15h 35m

$777

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Tue 12/1

3:15 pm-5:00 pm

1 stop18h 45m

Bilbao

Tue 12/15

6:45 am-1:10 pm

1 stop13h 25m

$783

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Tue 12/1

3:15 pm-5:00 pm

1 stop18h 45m

Bilbao

Tue 12/8

6:45 am-3:20 pm

1 stop15h 35m

$783

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Wed 12/2

4:20 pm-11:40 am

1 stop12h 20m

Bilbao

Mon 12/14

6:30 pm-6:25 pm

1 stop30h 55m

$793

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Tue 12/1

4:20 pm-5:00 pm

1 stop17h 40m

Bilbao

Mon 12/14

6:30 pm-6:25 pm

1 stop30h 55m

$800

Quickest round-trip

ChicagoBilbao

ORD Chicago O'Hare Intl - BIO Bilbao

ORDBIO

Chicago O'Hare Intl

Mon 4/5

9:40 pm-5:55 pm

1 stop13h 15m

Bilbao

Sat 4/17

6:50 am-12:55 pm

1 stop13h 05m

$808

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 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 $686, 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	$339
Fastest flight time	15h 15m
Direct flights	None

The best one-way flight to Bilbao from Chicago in the past 72 hours is $339. The best round-trip flight deal from Chicago to Bilbao found on momondo in the last 72 hours is $669.

The fastest flight from Chicago to Bilbao takes 15h 15m

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 15h 15m.
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 October 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.
What is the most popular airline from Chicago to Bilbao?
Based on momondo bookings for flights between Chicago and Bilbao, the leading airline is Iberia, making up 100% of the total bookings.

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 $528	Free Cancellation	Rating 6.8 8,279 reviews		Search Lufthansa flights
United Airlines	PriceFrom $724	Free Cancellation	Rating 7.3 10,388 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 $339

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 11/30. 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

Delta flights from Chicago to Bilbao

Our best Delta 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

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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

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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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